Step | Hyp | Ref
| Expression |
1 | | breq2 4657 |
. . . . . . . . . . 11
⊢ (𝑑 = 𝑦 → (((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑 ↔ ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦)) |
2 | 1 | imbi2d 330 |
. . . . . . . . . 10
⊢ (𝑑 = 𝑦 → (((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑) ↔ ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦))) |
3 | 2 | 2ralbidv 2989 |
. . . . . . . . 9
⊢ (𝑑 = 𝑦 → (∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑) ↔ ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦))) |
4 | 3 | rexbidv 3052 |
. . . . . . . 8
⊢ (𝑑 = 𝑦 → (∃𝑧 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑) ↔ ∃𝑧 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦))) |
5 | 4 | cbvralv 3171 |
. . . . . . 7
⊢
(∀𝑑 ∈
ℝ+ ∃𝑧 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑) ↔ ∀𝑦 ∈ ℝ+ ∃𝑧 ∈ ℝ+
∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦)) |
6 | | r19.12 3063 |
. . . . . . . 8
⊢
(∃𝑧 ∈
ℝ+ ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦) → ∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦)) |
7 | 6 | ralimi 2952 |
. . . . . . 7
⊢
(∀𝑦 ∈
ℝ+ ∃𝑧 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦) → ∀𝑦 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦)) |
8 | 5, 7 | sylbi 207 |
. . . . . 6
⊢
(∀𝑑 ∈
ℝ+ ∃𝑧 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑) → ∀𝑦 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦)) |
9 | | rphalfcl 11858 |
. . . . . . . . 9
⊢ (𝑑 ∈ ℝ+
→ (𝑑 / 2) ∈
ℝ+) |
10 | | breq2 4657 |
. . . . . . . . . . . . . . . 16
⊢ (𝑦 = (𝑑 / 2) → (((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦 ↔ ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2))) |
11 | 10 | imbi2d 330 |
. . . . . . . . . . . . . . 15
⊢ (𝑦 = (𝑑 / 2) → (((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦) ↔ ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2)))) |
12 | 11 | ralbidv 2986 |
. . . . . . . . . . . . . 14
⊢ (𝑦 = (𝑑 / 2) → (∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦) ↔ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2)))) |
13 | 12 | rexbidv 3052 |
. . . . . . . . . . . . 13
⊢ (𝑦 = (𝑑 / 2) → (∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦) ↔ ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2)))) |
14 | 13 | ralbidv 2986 |
. . . . . . . . . . . 12
⊢ (𝑦 = (𝑑 / 2) → (∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦) ↔ ∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2)))) |
15 | 14 | rspcva 3307 |
. . . . . . . . . . 11
⊢ (((𝑑 / 2) ∈ ℝ+
∧ ∀𝑦 ∈
ℝ+ ∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦)) → ∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2))) |
16 | | heicant.j |
. . . . . . . . . . . . . . 15
⊢ (𝜑 → (MetOpen‘𝐶) ∈ Comp) |
17 | 16 | ad3antrrr 766 |
. . . . . . . . . . . . . 14
⊢ ((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧
∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → (MetOpen‘𝐶) ∈ Comp) |
18 | | heicant.c |
. . . . . . . . . . . . . . . . . . . . . . . 24
⊢ (𝜑 → 𝐶 ∈ (∞Met‘𝑋)) |
19 | 18 | ad2antrr 762 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ (((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) → 𝐶 ∈ (∞Met‘𝑋)) |
20 | 19 | anim1i 592 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ ((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑥 ∈ 𝑋) → (𝐶 ∈ (∞Met‘𝑋) ∧ 𝑥 ∈ 𝑋)) |
21 | | rphalfcl 11858 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ (𝑧 ∈ ℝ+
→ (𝑧 / 2) ∈
ℝ+) |
22 | 21 | rpxrd 11873 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ (𝑧 ∈ ℝ+
→ (𝑧 / 2) ∈
ℝ*) |
23 | | eqid 2622 |
. . . . . . . . . . . . . . . . . . . . . . . 24
⊢
(MetOpen‘𝐶) =
(MetOpen‘𝐶) |
24 | 23 | blopn 22305 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ ((𝐶 ∈ (∞Met‘𝑋) ∧ 𝑥 ∈ 𝑋 ∧ (𝑧 / 2) ∈ ℝ*) →
(𝑥(ball‘𝐶)(𝑧 / 2)) ∈ (MetOpen‘𝐶)) |
25 | 24 | 3expa 1265 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ (((𝐶 ∈ (∞Met‘𝑋) ∧ 𝑥 ∈ 𝑋) ∧ (𝑧 / 2) ∈ ℝ*) →
(𝑥(ball‘𝐶)(𝑧 / 2)) ∈ (MetOpen‘𝐶)) |
26 | 20, 22, 25 | syl2an 494 |
. . . . . . . . . . . . . . . . . . . . 21
⊢
(((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑥 ∈ 𝑋) ∧ 𝑧 ∈ ℝ+) → (𝑥(ball‘𝐶)(𝑧 / 2)) ∈ (MetOpen‘𝐶)) |
27 | 26 | adantr 481 |
. . . . . . . . . . . . . . . . . . . 20
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑥 ∈ 𝑋) ∧ 𝑧 ∈ ℝ+) ∧
∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → (𝑥(ball‘𝐶)(𝑧 / 2)) ∈ (MetOpen‘𝐶)) |
28 | 21 | rpgt0d 11875 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ (𝑧 ∈ ℝ+
→ 0 < (𝑧 /
2)) |
29 | 22, 28 | jca 554 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ (𝑧 ∈ ℝ+
→ ((𝑧 / 2) ∈
ℝ* ∧ 0 < (𝑧 / 2))) |
30 | | xblcntr 22216 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ ((𝐶 ∈ (∞Met‘𝑋) ∧ 𝑥 ∈ 𝑋 ∧ ((𝑧 / 2) ∈ ℝ* ∧ 0 <
(𝑧 / 2))) → 𝑥 ∈ (𝑥(ball‘𝐶)(𝑧 / 2))) |
31 | 30 | 3expa 1265 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ (((𝐶 ∈ (∞Met‘𝑋) ∧ 𝑥 ∈ 𝑋) ∧ ((𝑧 / 2) ∈ ℝ* ∧ 0 <
(𝑧 / 2))) → 𝑥 ∈ (𝑥(ball‘𝐶)(𝑧 / 2))) |
32 | 20, 29, 31 | syl2an 494 |
. . . . . . . . . . . . . . . . . . . . 21
⊢
(((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑥 ∈ 𝑋) ∧ 𝑧 ∈ ℝ+) → 𝑥 ∈ (𝑥(ball‘𝐶)(𝑧 / 2))) |
33 | 32 | adantr 481 |
. . . . . . . . . . . . . . . . . . . 20
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑥 ∈ 𝑋) ∧ 𝑧 ∈ ℝ+) ∧
∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → 𝑥 ∈ (𝑥(ball‘𝐶)(𝑧 / 2))) |
34 | | opelxpi 5148 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ ((𝑥 ∈ 𝑋 ∧ (𝑧 / 2) ∈ ℝ+) →
〈𝑥, (𝑧 / 2)〉 ∈ (𝑋 ×
ℝ+)) |
35 | 21, 34 | sylan2 491 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ ((𝑥 ∈ 𝑋 ∧ 𝑧 ∈ ℝ+) →
〈𝑥, (𝑧 / 2)〉 ∈ (𝑋 ×
ℝ+)) |
36 | 35 | ad4ant23 1297 |
. . . . . . . . . . . . . . . . . . . . 21
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑥 ∈ 𝑋) ∧ 𝑧 ∈ ℝ+) ∧
∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → 〈𝑥, (𝑧 / 2)〉 ∈ (𝑋 ×
ℝ+)) |
37 | | rpcn 11841 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . 28
⊢ (𝑧 ∈ ℝ+
→ 𝑧 ∈
ℂ) |
38 | 37 | 2halvesd 11278 |
. . . . . . . . . . . . . . . . . . . . . . . . . . 27
⊢ (𝑧 ∈ ℝ+
→ ((𝑧 / 2) + (𝑧 / 2)) = 𝑧) |
39 | 38 | breq2d 4665 |
. . . . . . . . . . . . . . . . . . . . . . . . . 26
⊢ (𝑧 ∈ ℝ+
→ ((𝑥𝐶𝑐) < ((𝑧 / 2) + (𝑧 / 2)) ↔ (𝑥𝐶𝑐) < 𝑧)) |
40 | 39 | imbi1d 331 |
. . . . . . . . . . . . . . . . . . . . . . . . 25
⊢ (𝑧 ∈ ℝ+
→ (((𝑥𝐶𝑐) < ((𝑧 / 2) + (𝑧 / 2)) → ((𝑓‘𝑥)𝐷(𝑓‘𝑐)) < (𝑑 / 2)) ↔ ((𝑥𝐶𝑐) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) |
41 | 40 | ralbidv 2986 |
. . . . . . . . . . . . . . . . . . . . . . . 24
⊢ (𝑧 ∈ ℝ+
→ (∀𝑐 ∈
𝑋 ((𝑥𝐶𝑐) < ((𝑧 / 2) + (𝑧 / 2)) → ((𝑓‘𝑥)𝐷(𝑓‘𝑐)) < (𝑑 / 2)) ↔ ∀𝑐 ∈ 𝑋 ((𝑥𝐶𝑐) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) |
42 | | oveq2 6658 |
. . . . . . . . . . . . . . . . . . . . . . . . . . 27
⊢ (𝑐 = 𝑤 → (𝑥𝐶𝑐) = (𝑥𝐶𝑤)) |
43 | 42 | breq1d 4663 |
. . . . . . . . . . . . . . . . . . . . . . . . . 26
⊢ (𝑐 = 𝑤 → ((𝑥𝐶𝑐) < 𝑧 ↔ (𝑥𝐶𝑤) < 𝑧)) |
44 | | fveq2 6191 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . 28
⊢ (𝑐 = 𝑤 → (𝑓‘𝑐) = (𝑓‘𝑤)) |
45 | 44 | oveq2d 6666 |
. . . . . . . . . . . . . . . . . . . . . . . . . . 27
⊢ (𝑐 = 𝑤 → ((𝑓‘𝑥)𝐷(𝑓‘𝑐)) = ((𝑓‘𝑥)𝐷(𝑓‘𝑤))) |
46 | 45 | breq1d 4663 |
. . . . . . . . . . . . . . . . . . . . . . . . . 26
⊢ (𝑐 = 𝑤 → (((𝑓‘𝑥)𝐷(𝑓‘𝑐)) < (𝑑 / 2) ↔ ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2))) |
47 | 43, 46 | imbi12d 334 |
. . . . . . . . . . . . . . . . . . . . . . . . 25
⊢ (𝑐 = 𝑤 → (((𝑥𝐶𝑐) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑐)) < (𝑑 / 2)) ↔ ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2)))) |
48 | 47 | cbvralv 3171 |
. . . . . . . . . . . . . . . . . . . . . . . 24
⊢
(∀𝑐 ∈
𝑋 ((𝑥𝐶𝑐) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑐)) < (𝑑 / 2)) ↔ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2))) |
49 | 41, 48 | syl6bb 276 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ (𝑧 ∈ ℝ+
→ (∀𝑐 ∈
𝑋 ((𝑥𝐶𝑐) < ((𝑧 / 2) + (𝑧 / 2)) → ((𝑓‘𝑥)𝐷(𝑓‘𝑐)) < (𝑑 / 2)) ↔ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2)))) |
50 | 49 | biimpar 502 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ ((𝑧 ∈ ℝ+
∧ ∀𝑤 ∈
𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → ∀𝑐 ∈ 𝑋 ((𝑥𝐶𝑐) < ((𝑧 / 2) + (𝑧 / 2)) → ((𝑓‘𝑥)𝐷(𝑓‘𝑐)) < (𝑑 / 2))) |
51 | 50 | adantll 750 |
. . . . . . . . . . . . . . . . . . . . 21
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑥 ∈ 𝑋) ∧ 𝑧 ∈ ℝ+) ∧
∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → ∀𝑐 ∈ 𝑋 ((𝑥𝐶𝑐) < ((𝑧 / 2) + (𝑧 / 2)) → ((𝑓‘𝑥)𝐷(𝑓‘𝑐)) < (𝑑 / 2))) |
52 | | vex 3203 |
. . . . . . . . . . . . . . . . . . . . . . . . . . 27
⊢ 𝑥 ∈ V |
53 | | ovex 6678 |
. . . . . . . . . . . . . . . . . . . . . . . . . . 27
⊢ (𝑧 / 2) ∈ V |
54 | 52, 53 | op1std 7178 |
. . . . . . . . . . . . . . . . . . . . . . . . . 26
⊢ (𝑝 = 〈𝑥, (𝑧 / 2)〉 → (1st
‘𝑝) = 𝑥) |
55 | 52, 53 | op2ndd 7179 |
. . . . . . . . . . . . . . . . . . . . . . . . . 26
⊢ (𝑝 = 〈𝑥, (𝑧 / 2)〉 → (2nd
‘𝑝) = (𝑧 / 2)) |
56 | 54, 55 | oveq12d 6668 |
. . . . . . . . . . . . . . . . . . . . . . . . 25
⊢ (𝑝 = 〈𝑥, (𝑧 / 2)〉 → ((1st
‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) = (𝑥(ball‘𝐶)(𝑧 / 2))) |
57 | 56 | eqcomd 2628 |
. . . . . . . . . . . . . . . . . . . . . . . 24
⊢ (𝑝 = 〈𝑥, (𝑧 / 2)〉 → (𝑥(ball‘𝐶)(𝑧 / 2)) = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝))) |
58 | 57 | biantrurd 529 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ (𝑝 = 〈𝑥, (𝑧 / 2)〉 → (∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2)) ↔ ((𝑥(ball‘𝐶)(𝑧 / 2)) = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2))))) |
59 | 54 | oveq1d 6665 |
. . . . . . . . . . . . . . . . . . . . . . . . . 26
⊢ (𝑝 = 〈𝑥, (𝑧 / 2)〉 → ((1st
‘𝑝)𝐶𝑐) = (𝑥𝐶𝑐)) |
60 | 55, 55 | oveq12d 6668 |
. . . . . . . . . . . . . . . . . . . . . . . . . 26
⊢ (𝑝 = 〈𝑥, (𝑧 / 2)〉 → ((2nd
‘𝑝) + (2nd
‘𝑝)) = ((𝑧 / 2) + (𝑧 / 2))) |
61 | 59, 60 | breq12d 4666 |
. . . . . . . . . . . . . . . . . . . . . . . . 25
⊢ (𝑝 = 〈𝑥, (𝑧 / 2)〉 → (((1st
‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) ↔ (𝑥𝐶𝑐) < ((𝑧 / 2) + (𝑧 / 2)))) |
62 | 54 | fveq2d 6195 |
. . . . . . . . . . . . . . . . . . . . . . . . . . 27
⊢ (𝑝 = 〈𝑥, (𝑧 / 2)〉 → (𝑓‘(1st ‘𝑝)) = (𝑓‘𝑥)) |
63 | 62 | oveq1d 6665 |
. . . . . . . . . . . . . . . . . . . . . . . . . 26
⊢ (𝑝 = 〈𝑥, (𝑧 / 2)〉 → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) = ((𝑓‘𝑥)𝐷(𝑓‘𝑐))) |
64 | 63 | breq1d 4663 |
. . . . . . . . . . . . . . . . . . . . . . . . 25
⊢ (𝑝 = 〈𝑥, (𝑧 / 2)〉 → (((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2) ↔ ((𝑓‘𝑥)𝐷(𝑓‘𝑐)) < (𝑑 / 2))) |
65 | 61, 64 | imbi12d 334 |
. . . . . . . . . . . . . . . . . . . . . . . 24
⊢ (𝑝 = 〈𝑥, (𝑧 / 2)〉 → ((((1st
‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2)) ↔ ((𝑥𝐶𝑐) < ((𝑧 / 2) + (𝑧 / 2)) → ((𝑓‘𝑥)𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) |
66 | 65 | ralbidv 2986 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ (𝑝 = 〈𝑥, (𝑧 / 2)〉 → (∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2)) ↔ ∀𝑐 ∈ 𝑋 ((𝑥𝐶𝑐) < ((𝑧 / 2) + (𝑧 / 2)) → ((𝑓‘𝑥)𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) |
67 | 58, 66 | bitr3d 270 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ (𝑝 = 〈𝑥, (𝑧 / 2)〉 → (((𝑥(ball‘𝐶)(𝑧 / 2)) = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2))) ↔ ∀𝑐 ∈ 𝑋 ((𝑥𝐶𝑐) < ((𝑧 / 2) + (𝑧 / 2)) → ((𝑓‘𝑥)𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) |
68 | 67 | rspcev 3309 |
. . . . . . . . . . . . . . . . . . . . 21
⊢
((〈𝑥, (𝑧 / 2)〉 ∈ (𝑋 × ℝ+)
∧ ∀𝑐 ∈
𝑋 ((𝑥𝐶𝑐) < ((𝑧 / 2) + (𝑧 / 2)) → ((𝑓‘𝑥)𝐷(𝑓‘𝑐)) < (𝑑 / 2))) → ∃𝑝 ∈ (𝑋 × ℝ+)((𝑥(ball‘𝐶)(𝑧 / 2)) = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) |
69 | 36, 51, 68 | syl2anc 693 |
. . . . . . . . . . . . . . . . . . . 20
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑥 ∈ 𝑋) ∧ 𝑧 ∈ ℝ+) ∧
∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → ∃𝑝 ∈ (𝑋 × ℝ+)((𝑥(ball‘𝐶)(𝑧 / 2)) = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) |
70 | | eleq2 2690 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ (𝑏 = (𝑥(ball‘𝐶)(𝑧 / 2)) → (𝑥 ∈ 𝑏 ↔ 𝑥 ∈ (𝑥(ball‘𝐶)(𝑧 / 2)))) |
71 | | eqeq1 2626 |
. . . . . . . . . . . . . . . . . . . . . . . 24
⊢ (𝑏 = (𝑥(ball‘𝐶)(𝑧 / 2)) → (𝑏 = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ↔ (𝑥(ball‘𝐶)(𝑧 / 2)) = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)))) |
72 | 71 | anbi1d 741 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ (𝑏 = (𝑥(ball‘𝐶)(𝑧 / 2)) → ((𝑏 = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2))) ↔ ((𝑥(ball‘𝐶)(𝑧 / 2)) = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2))))) |
73 | 72 | rexbidv 3052 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ (𝑏 = (𝑥(ball‘𝐶)(𝑧 / 2)) → (∃𝑝 ∈ (𝑋 × ℝ+)(𝑏 = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2))) ↔ ∃𝑝 ∈ (𝑋 × ℝ+)((𝑥(ball‘𝐶)(𝑧 / 2)) = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2))))) |
74 | 70, 73 | anbi12d 747 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ (𝑏 = (𝑥(ball‘𝐶)(𝑧 / 2)) → ((𝑥 ∈ 𝑏 ∧ ∃𝑝 ∈ (𝑋 × ℝ+)(𝑏 = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) ↔ (𝑥 ∈ (𝑥(ball‘𝐶)(𝑧 / 2)) ∧ ∃𝑝 ∈ (𝑋 × ℝ+)((𝑥(ball‘𝐶)(𝑧 / 2)) = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))))) |
75 | 74 | rspcev 3309 |
. . . . . . . . . . . . . . . . . . . 20
⊢ (((𝑥(ball‘𝐶)(𝑧 / 2)) ∈ (MetOpen‘𝐶) ∧ (𝑥 ∈ (𝑥(ball‘𝐶)(𝑧 / 2)) ∧ ∃𝑝 ∈ (𝑋 × ℝ+)((𝑥(ball‘𝐶)(𝑧 / 2)) = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2))))) → ∃𝑏 ∈ (MetOpen‘𝐶)(𝑥 ∈ 𝑏 ∧ ∃𝑝 ∈ (𝑋 × ℝ+)(𝑏 = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2))))) |
76 | 27, 33, 69, 75 | syl12anc 1324 |
. . . . . . . . . . . . . . . . . . 19
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑥 ∈ 𝑋) ∧ 𝑧 ∈ ℝ+) ∧
∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → ∃𝑏 ∈ (MetOpen‘𝐶)(𝑥 ∈ 𝑏 ∧ ∃𝑝 ∈ (𝑋 × ℝ+)(𝑏 = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2))))) |
77 | 76 | ex 450 |
. . . . . . . . . . . . . . . . . 18
⊢
(((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑥 ∈ 𝑋) ∧ 𝑧 ∈ ℝ+) →
(∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2)) → ∃𝑏 ∈ (MetOpen‘𝐶)(𝑥 ∈ 𝑏 ∧ ∃𝑝 ∈ (𝑋 × ℝ+)(𝑏 = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))))) |
78 | 77 | rexlimdva 3031 |
. . . . . . . . . . . . . . . . 17
⊢ ((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑥 ∈ 𝑋) → (∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2)) → ∃𝑏 ∈ (MetOpen‘𝐶)(𝑥 ∈ 𝑏 ∧ ∃𝑝 ∈ (𝑋 × ℝ+)(𝑏 = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))))) |
79 | 78 | ralimdva 2962 |
. . . . . . . . . . . . . . . 16
⊢ (((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) →
(∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2)) → ∀𝑥 ∈ 𝑋 ∃𝑏 ∈ (MetOpen‘𝐶)(𝑥 ∈ 𝑏 ∧ ∃𝑝 ∈ (𝑋 × ℝ+)(𝑏 = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))))) |
80 | 79 | imp 445 |
. . . . . . . . . . . . . . 15
⊢ ((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧
∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → ∀𝑥 ∈ 𝑋 ∃𝑏 ∈ (MetOpen‘𝐶)(𝑥 ∈ 𝑏 ∧ ∃𝑝 ∈ (𝑋 × ℝ+)(𝑏 = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2))))) |
81 | 23 | mopnuni 22246 |
. . . . . . . . . . . . . . . . . 18
⊢ (𝐶 ∈ (∞Met‘𝑋) → 𝑋 = ∪
(MetOpen‘𝐶)) |
82 | 18, 81 | syl 17 |
. . . . . . . . . . . . . . . . 17
⊢ (𝜑 → 𝑋 = ∪
(MetOpen‘𝐶)) |
83 | 82 | raleqdv 3144 |
. . . . . . . . . . . . . . . 16
⊢ (𝜑 → (∀𝑥 ∈ 𝑋 ∃𝑏 ∈ (MetOpen‘𝐶)(𝑥 ∈ 𝑏 ∧ ∃𝑝 ∈ (𝑋 × ℝ+)(𝑏 = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) ↔ ∀𝑥 ∈ ∪
(MetOpen‘𝐶)∃𝑏 ∈ (MetOpen‘𝐶)(𝑥 ∈ 𝑏 ∧ ∃𝑝 ∈ (𝑋 × ℝ+)(𝑏 = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))))) |
84 | 83 | ad3antrrr 766 |
. . . . . . . . . . . . . . 15
⊢ ((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧
∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → (∀𝑥 ∈ 𝑋 ∃𝑏 ∈ (MetOpen‘𝐶)(𝑥 ∈ 𝑏 ∧ ∃𝑝 ∈ (𝑋 × ℝ+)(𝑏 = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) ↔ ∀𝑥 ∈ ∪
(MetOpen‘𝐶)∃𝑏 ∈ (MetOpen‘𝐶)(𝑥 ∈ 𝑏 ∧ ∃𝑝 ∈ (𝑋 × ℝ+)(𝑏 = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))))) |
85 | 80, 84 | mpbid 222 |
. . . . . . . . . . . . . 14
⊢ ((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧
∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → ∀𝑥 ∈ ∪
(MetOpen‘𝐶)∃𝑏 ∈ (MetOpen‘𝐶)(𝑥 ∈ 𝑏 ∧ ∃𝑝 ∈ (𝑋 × ℝ+)(𝑏 = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2))))) |
86 | | eqid 2622 |
. . . . . . . . . . . . . . 15
⊢ ∪ (MetOpen‘𝐶) = ∪
(MetOpen‘𝐶) |
87 | | fveq2 6191 |
. . . . . . . . . . . . . . . . . 18
⊢ (𝑝 = (𝑔‘𝑏) → (1st ‘𝑝) = (1st
‘(𝑔‘𝑏))) |
88 | | fveq2 6191 |
. . . . . . . . . . . . . . . . . 18
⊢ (𝑝 = (𝑔‘𝑏) → (2nd ‘𝑝) = (2nd
‘(𝑔‘𝑏))) |
89 | 87, 88 | oveq12d 6668 |
. . . . . . . . . . . . . . . . 17
⊢ (𝑝 = (𝑔‘𝑏) → ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) |
90 | 89 | eqeq2d 2632 |
. . . . . . . . . . . . . . . 16
⊢ (𝑝 = (𝑔‘𝑏) → (𝑏 = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ↔ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))))) |
91 | 87 | oveq1d 6665 |
. . . . . . . . . . . . . . . . . . 19
⊢ (𝑝 = (𝑔‘𝑏) → ((1st ‘𝑝)𝐶𝑐) = ((1st ‘(𝑔‘𝑏))𝐶𝑐)) |
92 | 88, 88 | oveq12d 6668 |
. . . . . . . . . . . . . . . . . . 19
⊢ (𝑝 = (𝑔‘𝑏) → ((2nd ‘𝑝) + (2nd ‘𝑝)) = ((2nd
‘(𝑔‘𝑏)) + (2nd
‘(𝑔‘𝑏)))) |
93 | 91, 92 | breq12d 4666 |
. . . . . . . . . . . . . . . . . 18
⊢ (𝑝 = (𝑔‘𝑏) → (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) ↔ ((1st
‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))))) |
94 | 87 | fveq2d 6195 |
. . . . . . . . . . . . . . . . . . . 20
⊢ (𝑝 = (𝑔‘𝑏) → (𝑓‘(1st ‘𝑝)) = (𝑓‘(1st ‘(𝑔‘𝑏)))) |
95 | 94 | oveq1d 6665 |
. . . . . . . . . . . . . . . . . . 19
⊢ (𝑝 = (𝑔‘𝑏) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) = ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐))) |
96 | 95 | breq1d 4663 |
. . . . . . . . . . . . . . . . . 18
⊢ (𝑝 = (𝑔‘𝑏) → (((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2) ↔ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2))) |
97 | 93, 96 | imbi12d 334 |
. . . . . . . . . . . . . . . . 17
⊢ (𝑝 = (𝑔‘𝑏) → ((((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2)) ↔ (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) |
98 | 97 | ralbidv 2986 |
. . . . . . . . . . . . . . . 16
⊢ (𝑝 = (𝑔‘𝑏) → (∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2)) ↔ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) |
99 | 90, 98 | anbi12d 747 |
. . . . . . . . . . . . . . 15
⊢ (𝑝 = (𝑔‘𝑏) → ((𝑏 = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2))) ↔ (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2))))) |
100 | 86, 99 | cmpcovf 21194 |
. . . . . . . . . . . . . 14
⊢
(((MetOpen‘𝐶)
∈ Comp ∧ ∀𝑥
∈ ∪ (MetOpen‘𝐶)∃𝑏 ∈ (MetOpen‘𝐶)(𝑥 ∈ 𝑏 ∧ ∃𝑝 ∈ (𝑋 × ℝ+)(𝑏 = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2))))) → ∃𝑠 ∈ (𝒫 (MetOpen‘𝐶) ∩ Fin)(∪ (MetOpen‘𝐶) = ∪ 𝑠 ∧ ∃𝑔(𝑔:𝑠⟶(𝑋 × ℝ+) ∧
∀𝑏 ∈ 𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))))) |
101 | 17, 85, 100 | syl2anc 693 |
. . . . . . . . . . . . 13
⊢ ((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧
∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → ∃𝑠 ∈ (𝒫 (MetOpen‘𝐶) ∩ Fin)(∪ (MetOpen‘𝐶) = ∪ 𝑠 ∧ ∃𝑔(𝑔:𝑠⟶(𝑋 × ℝ+) ∧
∀𝑏 ∈ 𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))))) |
102 | 101 | ex 450 |
. . . . . . . . . . . 12
⊢ (((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) →
(∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2)) → ∃𝑠 ∈ (𝒫 (MetOpen‘𝐶) ∩ Fin)(∪ (MetOpen‘𝐶) = ∪ 𝑠 ∧ ∃𝑔(𝑔:𝑠⟶(𝑋 × ℝ+) ∧
∀𝑏 ∈ 𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2))))))) |
103 | | elinel2 3800 |
. . . . . . . . . . . . . 14
⊢ (𝑠 ∈ (𝒫
(MetOpen‘𝐶) ∩
Fin) → 𝑠 ∈
Fin) |
104 | | simpll 790 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ (((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) → 𝜑) |
105 | 104 | anim1i 592 |
. . . . . . . . . . . . . . . . . . . 20
⊢ ((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) → (𝜑 ∧ 𝑠 ∈ Fin)) |
106 | | frn 6053 |
. . . . . . . . . . . . . . . . . . . . . . . 24
⊢ (𝑔:𝑠⟶(𝑋 × ℝ+) → ran
𝑔 ⊆ (𝑋 ×
ℝ+)) |
107 | | rnss 5354 |
. . . . . . . . . . . . . . . . . . . . . . . 24
⊢ (ran
𝑔 ⊆ (𝑋 × ℝ+)
→ ran ran 𝑔 ⊆
ran (𝑋 ×
ℝ+)) |
108 | 106, 107 | syl 17 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ (𝑔:𝑠⟶(𝑋 × ℝ+) → ran ran
𝑔 ⊆ ran (𝑋 ×
ℝ+)) |
109 | | rnxpss 5566 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ ran
(𝑋 ×
ℝ+) ⊆ ℝ+ |
110 | 108, 109 | syl6ss 3615 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ (𝑔:𝑠⟶(𝑋 × ℝ+) → ran ran
𝑔 ⊆
ℝ+) |
111 | 110 | adantl 482 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ ((((𝜑 ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → ran
ran 𝑔 ⊆
ℝ+) |
112 | | simplr 792 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ (((𝜑 ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) → 𝑠 ∈ Fin) |
113 | | ffun 6048 |
. . . . . . . . . . . . . . . . . . . . . . . . . . 27
⊢ (𝑔:𝑠⟶(𝑋 × ℝ+) → Fun
𝑔) |
114 | | vex 3203 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
⊢ 𝑔 ∈ V |
115 | 114 | fundmen 8030 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . 28
⊢ (Fun
𝑔 → dom 𝑔 ≈ 𝑔) |
116 | 115 | ensymd 8007 |
. . . . . . . . . . . . . . . . . . . . . . . . . . 27
⊢ (Fun
𝑔 → 𝑔 ≈ dom 𝑔) |
117 | 113, 116 | syl 17 |
. . . . . . . . . . . . . . . . . . . . . . . . . 26
⊢ (𝑔:𝑠⟶(𝑋 × ℝ+) → 𝑔 ≈ dom 𝑔) |
118 | | fdm 6051 |
. . . . . . . . . . . . . . . . . . . . . . . . . 26
⊢ (𝑔:𝑠⟶(𝑋 × ℝ+) → dom
𝑔 = 𝑠) |
119 | 117, 118 | breqtrd 4679 |
. . . . . . . . . . . . . . . . . . . . . . . . 25
⊢ (𝑔:𝑠⟶(𝑋 × ℝ+) → 𝑔 ≈ 𝑠) |
120 | | enfii 8177 |
. . . . . . . . . . . . . . . . . . . . . . . . 25
⊢ ((𝑠 ∈ Fin ∧ 𝑔 ≈ 𝑠) → 𝑔 ∈ Fin) |
121 | 119, 120 | sylan2 491 |
. . . . . . . . . . . . . . . . . . . . . . . 24
⊢ ((𝑠 ∈ Fin ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → 𝑔 ∈ Fin) |
122 | | rnfi 8249 |
. . . . . . . . . . . . . . . . . . . . . . . 24
⊢ (𝑔 ∈ Fin → ran 𝑔 ∈ Fin) |
123 | | rnfi 8249 |
. . . . . . . . . . . . . . . . . . . . . . . 24
⊢ (ran
𝑔 ∈ Fin → ran ran
𝑔 ∈
Fin) |
124 | 121, 122,
123 | 3syl 18 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ ((𝑠 ∈ Fin ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → ran
ran 𝑔 ∈
Fin) |
125 | 112, 124 | sylan 488 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ ((((𝜑 ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → ran
ran 𝑔 ∈
Fin) |
126 | 118 | adantl 482 |
. . . . . . . . . . . . . . . . . . . . . . . . . 26
⊢ (((𝜑 ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → dom
𝑔 = 𝑠) |
127 | | eqtr 2641 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30
⊢ ((𝑋 = ∪
(MetOpen‘𝐶) ∧
∪ (MetOpen‘𝐶) = ∪ 𝑠) → 𝑋 = ∪ 𝑠) |
128 | 82, 127 | sylan 488 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
⊢ ((𝜑 ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) → 𝑋 = ∪ 𝑠) |
129 | | heicant.x |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30
⊢ (𝜑 → 𝑋 ≠ ∅) |
130 | 129 | adantr 481 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
⊢ ((𝜑 ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) → 𝑋 ≠ ∅) |
131 | 128, 130 | eqnetrrd 2862 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . 28
⊢ ((𝜑 ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) → ∪ 𝑠
≠ ∅) |
132 | | unieq 4444 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30
⊢ (𝑠 = ∅ → ∪ 𝑠 =
∪ ∅) |
133 | | uni0 4465 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30
⊢ ∪ ∅ = ∅ |
134 | 132, 133 | syl6eq 2672 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
⊢ (𝑠 = ∅ → ∪ 𝑠 =
∅) |
135 | 134 | necon3i 2826 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . 28
⊢ (∪ 𝑠
≠ ∅ → 𝑠 ≠
∅) |
136 | 131, 135 | syl 17 |
. . . . . . . . . . . . . . . . . . . . . . . . . . 27
⊢ ((𝜑 ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) → 𝑠 ≠ ∅) |
137 | 136 | adantr 481 |
. . . . . . . . . . . . . . . . . . . . . . . . . 26
⊢ (((𝜑 ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → 𝑠 ≠ ∅) |
138 | 126, 137 | eqnetrd 2861 |
. . . . . . . . . . . . . . . . . . . . . . . . 25
⊢ (((𝜑 ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → dom
𝑔 ≠
∅) |
139 | | dm0rn0 5342 |
. . . . . . . . . . . . . . . . . . . . . . . . . 26
⊢ (dom
𝑔 = ∅ ↔ ran
𝑔 =
∅) |
140 | 139 | necon3bii 2846 |
. . . . . . . . . . . . . . . . . . . . . . . . 25
⊢ (dom
𝑔 ≠ ∅ ↔ ran
𝑔 ≠
∅) |
141 | 138, 140 | sylib 208 |
. . . . . . . . . . . . . . . . . . . . . . . 24
⊢ (((𝜑 ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → ran
𝑔 ≠
∅) |
142 | | relxp 5227 |
. . . . . . . . . . . . . . . . . . . . . . . . . . 27
⊢ Rel
(𝑋 ×
ℝ+) |
143 | | relss 5206 |
. . . . . . . . . . . . . . . . . . . . . . . . . . 27
⊢ (ran
𝑔 ⊆ (𝑋 × ℝ+)
→ (Rel (𝑋 ×
ℝ+) → Rel ran 𝑔)) |
144 | 106, 142,
143 | mpisyl 21 |
. . . . . . . . . . . . . . . . . . . . . . . . . 26
⊢ (𝑔:𝑠⟶(𝑋 × ℝ+) → Rel ran
𝑔) |
145 | | relrn0 5383 |
. . . . . . . . . . . . . . . . . . . . . . . . . . 27
⊢ (Rel ran
𝑔 → (ran 𝑔 = ∅ ↔ ran ran 𝑔 = ∅)) |
146 | 145 | necon3bid 2838 |
. . . . . . . . . . . . . . . . . . . . . . . . . 26
⊢ (Rel ran
𝑔 → (ran 𝑔 ≠ ∅ ↔ ran ran
𝑔 ≠
∅)) |
147 | 144, 146 | syl 17 |
. . . . . . . . . . . . . . . . . . . . . . . . 25
⊢ (𝑔:𝑠⟶(𝑋 × ℝ+) → (ran
𝑔 ≠ ∅ ↔ ran
ran 𝑔 ≠
∅)) |
148 | 147 | adantl 482 |
. . . . . . . . . . . . . . . . . . . . . . . 24
⊢ (((𝜑 ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → (ran
𝑔 ≠ ∅ ↔ ran
ran 𝑔 ≠
∅)) |
149 | 141, 148 | mpbid 222 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ (((𝜑 ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → ran
ran 𝑔 ≠
∅) |
150 | 149 | adantllr 755 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ ((((𝜑 ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → ran
ran 𝑔 ≠
∅) |
151 | | rpssre 11843 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢
ℝ+ ⊆ ℝ |
152 | 111, 151 | syl6ss 3615 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ ((((𝜑 ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → ran
ran 𝑔 ⊆
ℝ) |
153 | | ltso 10118 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ < Or
ℝ |
154 | | fiinfcl 8407 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ (( <
Or ℝ ∧ (ran ran 𝑔
∈ Fin ∧ ran ran 𝑔
≠ ∅ ∧ ran ran 𝑔 ⊆ ℝ)) → inf(ran ran 𝑔, ℝ, < ) ∈ ran ran
𝑔) |
155 | 153, 154 | mpan 706 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ ((ran ran
𝑔 ∈ Fin ∧ ran ran
𝑔 ≠ ∅ ∧ ran
ran 𝑔 ⊆ ℝ)
→ inf(ran ran 𝑔,
ℝ, < ) ∈ ran ran 𝑔) |
156 | 125, 150,
152, 155 | syl3anc 1326 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ ((((𝜑 ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) →
inf(ran ran 𝑔, ℝ,
< ) ∈ ran ran 𝑔) |
157 | 111, 156 | sseldd 3604 |
. . . . . . . . . . . . . . . . . . . 20
⊢ ((((𝜑 ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) →
inf(ran ran 𝑔, ℝ,
< ) ∈ ℝ+) |
158 | 105, 157 | sylanl1 682 |
. . . . . . . . . . . . . . . . . . 19
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) →
inf(ran ran 𝑔, ℝ,
< ) ∈ ℝ+) |
159 | 158 | adantr 481 |
. . . . . . . . . . . . . . . . . 18
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧
∀𝑏 ∈ 𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) → inf(ran ran 𝑔, ℝ, < ) ∈
ℝ+) |
160 | 82 | ad3antrrr 766 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ ((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) → 𝑋 = ∪
(MetOpen‘𝐶)) |
161 | 160 | anim1i 592 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢
(((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) → (𝑋 = ∪
(MetOpen‘𝐶) ∧
∪ (MetOpen‘𝐶) = ∪ 𝑠)) |
162 | 161 | ad2antrr 762 |
. . . . . . . . . . . . . . . . . . . . 21
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧
∀𝑏 ∈ 𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) → (𝑋 = ∪
(MetOpen‘𝐶) ∧
∪ (MetOpen‘𝐶) = ∪ 𝑠)) |
163 | | simpl 473 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ ((𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋) → 𝑥 ∈ 𝑋) |
164 | 127 | eleq2d 2687 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ ((𝑋 = ∪
(MetOpen‘𝐶) ∧
∪ (MetOpen‘𝐶) = ∪ 𝑠) → (𝑥 ∈ 𝑋 ↔ 𝑥 ∈ ∪ 𝑠)) |
165 | | eluni2 4440 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ (𝑥 ∈ ∪ 𝑠
↔ ∃𝑏 ∈
𝑠 𝑥 ∈ 𝑏) |
166 | 164, 165 | syl6bb 276 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ ((𝑋 = ∪
(MetOpen‘𝐶) ∧
∪ (MetOpen‘𝐶) = ∪ 𝑠) → (𝑥 ∈ 𝑋 ↔ ∃𝑏 ∈ 𝑠 𝑥 ∈ 𝑏)) |
167 | 166 | biimpa 501 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ (((𝑋 = ∪
(MetOpen‘𝐶) ∧
∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑥 ∈ 𝑋) → ∃𝑏 ∈ 𝑠 𝑥 ∈ 𝑏) |
168 | 162, 163,
167 | syl2an 494 |
. . . . . . . . . . . . . . . . . . . 20
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧
∀𝑏 ∈ 𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) → ∃𝑏 ∈ 𝑠 𝑥 ∈ 𝑏) |
169 | | nfv 1843 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢
Ⅎ𝑏(((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 ×
ℝ+)) |
170 | | nfra1 2941 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢
Ⅎ𝑏∀𝑏 ∈ 𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2))) |
171 | 169, 170 | nfan 1828 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢
Ⅎ𝑏((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧
∀𝑏 ∈ 𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) |
172 | | nfv 1843 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢
Ⅎ𝑏(𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋) |
173 | 171, 172 | nfan 1828 |
. . . . . . . . . . . . . . . . . . . . 21
⊢
Ⅎ𝑏(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧
∀𝑏 ∈ 𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) |
174 | | nfv 1843 |
. . . . . . . . . . . . . . . . . . . . 21
⊢
Ⅎ𝑏((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑) |
175 | | rspa 2930 |
. . . . . . . . . . . . . . . . . . . . . . . . 25
⊢
((∀𝑏 ∈
𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2))) ∧ 𝑏 ∈ 𝑠) → (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) |
176 | | oveq2 6658 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢ (𝑐 = 𝑥 → ((1st ‘(𝑔‘𝑏))𝐶𝑐) = ((1st ‘(𝑔‘𝑏))𝐶𝑥)) |
177 | 176 | breq1d 4663 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢ (𝑐 = 𝑥 → (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) ↔ ((1st ‘(𝑔‘𝑏))𝐶𝑥) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))))) |
178 | | fveq2 6191 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢ (𝑐 = 𝑥 → (𝑓‘𝑐) = (𝑓‘𝑥)) |
179 | 178 | oveq2d 6666 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢ (𝑐 = 𝑥 → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) = ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥))) |
180 | 179 | breq1d 4663 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢ (𝑐 = 𝑥 → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2) ↔ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2))) |
181 | 177, 180 | imbi12d 334 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
33
⊢ (𝑐 = 𝑥 → ((((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)) ↔ (((1st ‘(𝑔‘𝑏))𝐶𝑥) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2)))) |
182 | 181 | rspcva 3307 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
32
⊢ ((𝑥 ∈ 𝑋 ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2))) → (((1st
‘(𝑔‘𝑏))𝐶𝑥) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2))) |
183 | | oveq2 6658 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢ (𝑐 = 𝑤 → ((1st ‘(𝑔‘𝑏))𝐶𝑐) = ((1st ‘(𝑔‘𝑏))𝐶𝑤)) |
184 | 183 | breq1d 4663 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢ (𝑐 = 𝑤 → (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) ↔ ((1st ‘(𝑔‘𝑏))𝐶𝑤) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))))) |
185 | 44 | oveq2d 6666 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢ (𝑐 = 𝑤 → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) = ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤))) |
186 | 185 | breq1d 4663 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢ (𝑐 = 𝑤 → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2) ↔ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2))) |
187 | 184, 186 | imbi12d 334 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
33
⊢ (𝑐 = 𝑤 → ((((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)) ↔ (((1st ‘(𝑔‘𝑏))𝐶𝑤) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2)))) |
188 | 187 | rspcva 3307 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
32
⊢ ((𝑤 ∈ 𝑋 ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2))) → (((1st
‘(𝑔‘𝑏))𝐶𝑤) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2))) |
189 | 182, 188 | anim12i 590 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
31
⊢ (((𝑥 ∈ 𝑋 ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2))) ∧ (𝑤 ∈ 𝑋 ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) → ((((1st
‘(𝑔‘𝑏))𝐶𝑥) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2)) ∧ (((1st ‘(𝑔‘𝑏))𝐶𝑤) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2)))) |
190 | 189 | anandirs 874 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30
⊢ (((𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2))) → ((((1st
‘(𝑔‘𝑏))𝐶𝑥) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2)) ∧ (((1st ‘(𝑔‘𝑏))𝐶𝑤) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2)))) |
191 | | prth 595 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30
⊢
(((((1st ‘(𝑔‘𝑏))𝐶𝑥) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2)) ∧ (((1st ‘(𝑔‘𝑏))𝐶𝑤) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → ((((1st
‘(𝑔‘𝑏))𝐶𝑥) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) ∧ ((1st ‘(𝑔‘𝑏))𝐶𝑤) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏)))) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2)))) |
192 | 190, 191 | syl 17 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
⊢ (((𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2))) → ((((1st
‘(𝑔‘𝑏))𝐶𝑥) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) ∧ ((1st ‘(𝑔‘𝑏))𝐶𝑤) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏)))) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2)))) |
193 | 192 | adantrl 752 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . 28
⊢ (((𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋) ∧ (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) → ((((1st
‘(𝑔‘𝑏))𝐶𝑥) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) ∧ ((1st ‘(𝑔‘𝑏))𝐶𝑤) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏)))) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2)))) |
194 | 193 | ad4ant23 1297 |
. . . . . . . . . . . . . . . . . . . . . . . . . . 27
⊢
(((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((((1st ‘(𝑔‘𝑏))𝐶𝑥) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) ∧ ((1st ‘(𝑔‘𝑏))𝐶𝑤) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏)))) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2)))) |
195 | | simpll 790 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
31
⊢
(((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) → ((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈
ℝ+)) |
196 | 195 | anim1i 592 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) →
(((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 ×
ℝ+))) |
197 | 196 | anim1i 592 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) → ((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋))) |
198 | 110, 151 | syl6ss 3615 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢ (𝑔:𝑠⟶(𝑋 × ℝ+) → ran ran
𝑔 ⊆
ℝ) |
199 | 198 | adantr 481 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢ ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏 ∈ 𝑠) → ran ran 𝑔 ⊆ ℝ) |
200 | | 0re 10040 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . 38
⊢ 0 ∈
ℝ |
201 | | rpge0 11845 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢ (𝑦 ∈ ℝ+
→ 0 ≤ 𝑦) |
202 | 201 | rgen 2922 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . 39
⊢
∀𝑦 ∈
ℝ+ 0 ≤ 𝑦 |
203 | | ssralv 3666 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . 39
⊢ (ran ran
𝑔 ⊆
ℝ+ → (∀𝑦 ∈ ℝ+ 0 ≤ 𝑦 → ∀𝑦 ∈ ran ran 𝑔0 ≤ 𝑦)) |
204 | 110, 202,
203 | mpisyl 21 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . 38
⊢ (𝑔:𝑠⟶(𝑋 × ℝ+) →
∀𝑦 ∈ ran ran
𝑔0 ≤ 𝑦) |
205 | | breq1 4656 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢ (𝑥 = 0 → (𝑥 ≤ 𝑦 ↔ 0 ≤ 𝑦)) |
206 | 205 | ralbidv 2986 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . 39
⊢ (𝑥 = 0 → (∀𝑦 ∈ ran ran 𝑔 𝑥 ≤ 𝑦 ↔ ∀𝑦 ∈ ran ran 𝑔0 ≤ 𝑦)) |
207 | 206 | rspcev 3309 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . 38
⊢ ((0
∈ ℝ ∧ ∀𝑦 ∈ ran ran 𝑔0 ≤ 𝑦) → ∃𝑥 ∈ ℝ ∀𝑦 ∈ ran ran 𝑔 𝑥 ≤ 𝑦) |
208 | 200, 204,
207 | sylancr 695 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢ (𝑔:𝑠⟶(𝑋 × ℝ+) →
∃𝑥 ∈ ℝ
∀𝑦 ∈ ran ran
𝑔 𝑥 ≤ 𝑦) |
209 | 208 | adantr 481 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢ ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏 ∈ 𝑠) → ∃𝑥 ∈ ℝ ∀𝑦 ∈ ran ran 𝑔 𝑥 ≤ 𝑦) |
210 | 144 | adantr 481 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢ ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏 ∈ 𝑠) → Rel ran 𝑔) |
211 | | ffn 6045 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . 38
⊢ (𝑔:𝑠⟶(𝑋 × ℝ+) → 𝑔 Fn 𝑠) |
212 | | fnfvelrn 6356 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . 38
⊢ ((𝑔 Fn 𝑠 ∧ 𝑏 ∈ 𝑠) → (𝑔‘𝑏) ∈ ran 𝑔) |
213 | 211, 212 | sylan 488 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢ ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏 ∈ 𝑠) → (𝑔‘𝑏) ∈ ran 𝑔) |
214 | | 2ndrn 7216 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢ ((Rel ran
𝑔 ∧ (𝑔‘𝑏) ∈ ran 𝑔) → (2nd ‘(𝑔‘𝑏)) ∈ ran ran 𝑔) |
215 | 210, 213,
214 | syl2anc 693 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢ ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏 ∈ 𝑠) → (2nd ‘(𝑔‘𝑏)) ∈ ran ran 𝑔) |
216 | | infrelb 11008 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢ ((ran ran
𝑔 ⊆ ℝ ∧
∃𝑥 ∈ ℝ
∀𝑦 ∈ ran ran
𝑔 𝑥 ≤ 𝑦 ∧ (2nd ‘(𝑔‘𝑏)) ∈ ran ran 𝑔) → inf(ran ran 𝑔, ℝ, < ) ≤ (2nd
‘(𝑔‘𝑏))) |
217 | 199, 209,
215, 216 | syl3anc 1326 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢ ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏 ∈ 𝑠) → inf(ran ran 𝑔, ℝ, < ) ≤ (2nd
‘(𝑔‘𝑏))) |
218 | 217 | adantll 750 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢
(((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ 𝑏 ∈ 𝑠) → inf(ran ran 𝑔, ℝ, < ) ≤ (2nd
‘(𝑔‘𝑏))) |
219 | 218 | ad2ant2r 783 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
33
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → inf(ran ran 𝑔, ℝ, < ) ≤ (2nd
‘(𝑔‘𝑏))) |
220 | 18 | ad3antrrr 766 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢ ((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → 𝐶 ∈ (∞Met‘𝑋)) |
221 | | xmetcl 22136 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢ ((𝐶 ∈ (∞Met‘𝑋) ∧ 𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋) → (𝑥𝐶𝑤) ∈
ℝ*) |
222 | 221 | 3expb 1266 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢ ((𝐶 ∈ (∞Met‘𝑋) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) → (𝑥𝐶𝑤) ∈
ℝ*) |
223 | 220, 222 | sylan 488 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢
(((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) → (𝑥𝐶𝑤) ∈
ℝ*) |
224 | 223 | adantr 481 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → (𝑥𝐶𝑤) ∈
ℝ*) |
225 | | simplr 792 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢
(((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) → 𝑔:𝑠⟶(𝑋 ×
ℝ+)) |
226 | | simpl 473 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢ ((𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏) → 𝑏 ∈ 𝑠) |
227 | | ne0i 3921 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . 38
⊢
((2nd ‘(𝑔‘𝑏)) ∈ ran ran 𝑔 → ran ran 𝑔 ≠ ∅) |
228 | 215, 227 | syl 17 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢ ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏 ∈ 𝑠) → ran ran 𝑔 ≠ ∅) |
229 | | infrecl 11005 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢ ((ran ran
𝑔 ⊆ ℝ ∧ ran
ran 𝑔 ≠ ∅ ∧
∃𝑥 ∈ ℝ
∀𝑦 ∈ ran ran
𝑔 𝑥 ≤ 𝑦) → inf(ran ran 𝑔, ℝ, < ) ∈
ℝ) |
230 | 199, 228,
209, 229 | syl3anc 1326 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢ ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏 ∈ 𝑠) → inf(ran ran 𝑔, ℝ, < ) ∈
ℝ) |
231 | 230 | rexrd 10089 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢ ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏 ∈ 𝑠) → inf(ran ran 𝑔, ℝ, < ) ∈
ℝ*) |
232 | 225, 226,
231 | syl2an 494 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → inf(ran ran 𝑔, ℝ, < ) ∈
ℝ*) |
233 | | simpr 477 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . 38
⊢ ((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → 𝑔:𝑠⟶(𝑋 ×
ℝ+)) |
234 | 233 | ffvelrnda 6359 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢
(((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ 𝑏 ∈ 𝑠) → (𝑔‘𝑏) ∈ (𝑋 ×
ℝ+)) |
235 | | xp2nd 7199 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢ ((𝑔‘𝑏) ∈ (𝑋 × ℝ+) →
(2nd ‘(𝑔‘𝑏)) ∈
ℝ+) |
236 | 234, 235 | syl 17 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢
(((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ 𝑏 ∈ 𝑠) → (2nd ‘(𝑔‘𝑏)) ∈
ℝ+) |
237 | 236 | rpxrd 11873 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢
(((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ 𝑏 ∈ 𝑠) → (2nd ‘(𝑔‘𝑏)) ∈
ℝ*) |
238 | 237 | ad2ant2r 783 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → (2nd ‘(𝑔‘𝑏)) ∈
ℝ*) |
239 | | xrltletr 11988 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢ (((𝑥𝐶𝑤) ∈ ℝ* ∧ inf(ran
ran 𝑔, ℝ, < )
∈ ℝ* ∧ (2nd ‘(𝑔‘𝑏)) ∈ ℝ*) →
(((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) ∧ inf(ran ran 𝑔, ℝ, < ) ≤
(2nd ‘(𝑔‘𝑏))) → (𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏)))) |
240 | 224, 232,
238, 239 | syl3anc 1326 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
33
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → (((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) ∧ inf(ran ran 𝑔, ℝ, < ) ≤
(2nd ‘(𝑔‘𝑏))) → (𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏)))) |
241 | 219, 240 | mpan2d 710 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
32
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → (𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏)))) |
242 | 241 | adantlr 751 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
31
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → (𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏)))) |
243 | 18 | ad6antr 772 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → 𝐶 ∈ (∞Met‘𝑋)) |
244 | | simpllr 799 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) → 𝑔:𝑠⟶(𝑋 ×
ℝ+)) |
245 | | ffvelrn 6357 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . 38
⊢ ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏 ∈ 𝑠) → (𝑔‘𝑏) ∈ (𝑋 ×
ℝ+)) |
246 | | xp1st 7198 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . 38
⊢ ((𝑔‘𝑏) ∈ (𝑋 × ℝ+) →
(1st ‘(𝑔‘𝑏)) ∈ 𝑋) |
247 | 245, 246 | syl 17 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢ ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏 ∈ 𝑠) → (1st ‘(𝑔‘𝑏)) ∈ 𝑋) |
248 | 244, 226,
247 | syl2an 494 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → (1st ‘(𝑔‘𝑏)) ∈ 𝑋) |
249 | | simpr 477 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢ ((𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋) → 𝑤 ∈ 𝑋) |
250 | 249 | ad3antlr 767 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → 𝑤 ∈ 𝑋) |
251 | | xmetcl 22136 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢ ((𝐶 ∈ (∞Met‘𝑋) ∧ (1st
‘(𝑔‘𝑏)) ∈ 𝑋 ∧ 𝑤 ∈ 𝑋) → ((1st ‘(𝑔‘𝑏))𝐶𝑤) ∈
ℝ*) |
252 | 243, 248,
250, 251 | syl3anc 1326 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((1st ‘(𝑔‘𝑏))𝐶𝑤) ∈
ℝ*) |
253 | 252 | adantr 481 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏))) → ((1st ‘(𝑔‘𝑏))𝐶𝑤) ∈
ℝ*) |
254 | 245, 235 | syl 17 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . 41
⊢ ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏 ∈ 𝑠) → (2nd ‘(𝑔‘𝑏)) ∈
ℝ+) |
255 | 225, 254 | sylan 488 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → (2nd ‘(𝑔‘𝑏)) ∈
ℝ+) |
256 | 255 | ad2ant2r 783 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . 39
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → (2nd ‘(𝑔‘𝑏)) ∈
ℝ+) |
257 | 256 | rpred 11872 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . 38
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → (2nd ‘(𝑔‘𝑏)) ∈ ℝ) |
258 | | eleq2 2690 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . 44
⊢ (𝑏 = ((1st
‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) → (𝑥 ∈ 𝑏 ↔ 𝑥 ∈ ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))))) |
259 | 18 | ad5antr 770 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . 45
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → 𝐶 ∈ (∞Met‘𝑋)) |
260 | 225, 247 | sylan 488 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . 45
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → (1st ‘(𝑔‘𝑏)) ∈ 𝑋) |
261 | 255 | rpxrd 11873 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . 45
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → (2nd ‘(𝑔‘𝑏)) ∈
ℝ*) |
262 | | elbl 22193 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . 45
⊢ ((𝐶 ∈ (∞Met‘𝑋) ∧ (1st
‘(𝑔‘𝑏)) ∈ 𝑋 ∧ (2nd ‘(𝑔‘𝑏)) ∈ ℝ*) → (𝑥 ∈ ((1st
‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ↔ (𝑥 ∈ 𝑋 ∧ ((1st ‘(𝑔‘𝑏))𝐶𝑥) < (2nd ‘(𝑔‘𝑏))))) |
263 | 259, 260,
261, 262 | syl3anc 1326 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . 44
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → (𝑥 ∈ ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ↔ (𝑥 ∈ 𝑋 ∧ ((1st ‘(𝑔‘𝑏))𝐶𝑥) < (2nd ‘(𝑔‘𝑏))))) |
264 | 258, 263 | sylan9bbr 737 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . 43
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) → (𝑥 ∈ 𝑏 ↔ (𝑥 ∈ 𝑋 ∧ ((1st ‘(𝑔‘𝑏))𝐶𝑥) < (2nd ‘(𝑔‘𝑏))))) |
265 | 264 | biimpd 219 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . 42
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) → (𝑥 ∈ 𝑏 → (𝑥 ∈ 𝑋 ∧ ((1st ‘(𝑔‘𝑏))𝐶𝑥) < (2nd ‘(𝑔‘𝑏))))) |
266 | 265 | an32s 846 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . 41
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ 𝑏 ∈ 𝑠) → (𝑥 ∈ 𝑏 → (𝑥 ∈ 𝑋 ∧ ((1st ‘(𝑔‘𝑏))𝐶𝑥) < (2nd ‘(𝑔‘𝑏))))) |
267 | 266 | impr 649 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → (𝑥 ∈ 𝑋 ∧ ((1st ‘(𝑔‘𝑏))𝐶𝑥) < (2nd ‘(𝑔‘𝑏)))) |
268 | 267 | simprd 479 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . 39
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((1st ‘(𝑔‘𝑏))𝐶𝑥) < (2nd ‘(𝑔‘𝑏))) |
269 | 163 | ad3antlr 767 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . 41
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → 𝑥 ∈ 𝑋) |
270 | | xmetcl 22136 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . 41
⊢ ((𝐶 ∈ (∞Met‘𝑋) ∧ (1st
‘(𝑔‘𝑏)) ∈ 𝑋 ∧ 𝑥 ∈ 𝑋) → ((1st ‘(𝑔‘𝑏))𝐶𝑥) ∈
ℝ*) |
271 | 243, 248,
269, 270 | syl3anc 1326 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((1st ‘(𝑔‘𝑏))𝐶𝑥) ∈
ℝ*) |
272 | 254 | rpxrd 11873 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . 41
⊢ ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏 ∈ 𝑠) → (2nd ‘(𝑔‘𝑏)) ∈
ℝ*) |
273 | 244, 226,
272 | syl2an 494 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → (2nd ‘(𝑔‘𝑏)) ∈
ℝ*) |
274 | | xrltle 11982 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢
((((1st ‘(𝑔‘𝑏))𝐶𝑥) ∈ ℝ* ∧
(2nd ‘(𝑔‘𝑏)) ∈ ℝ*) →
(((1st ‘(𝑔‘𝑏))𝐶𝑥) < (2nd ‘(𝑔‘𝑏)) → ((1st ‘(𝑔‘𝑏))𝐶𝑥) ≤ (2nd ‘(𝑔‘𝑏)))) |
275 | 271, 273,
274 | syl2anc 693 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . 39
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → (((1st ‘(𝑔‘𝑏))𝐶𝑥) < (2nd ‘(𝑔‘𝑏)) → ((1st ‘(𝑔‘𝑏))𝐶𝑥) ≤ (2nd ‘(𝑔‘𝑏)))) |
276 | 268, 275 | mpd 15 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . 38
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((1st ‘(𝑔‘𝑏))𝐶𝑥) ≤ (2nd ‘(𝑔‘𝑏))) |
277 | 225 | ffvelrnda 6359 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . 42
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → (𝑔‘𝑏) ∈ (𝑋 ×
ℝ+)) |
278 | 277, 246 | syl 17 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . 41
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → (1st ‘(𝑔‘𝑏)) ∈ 𝑋) |
279 | | simplrl 800 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . 41
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → 𝑥 ∈ 𝑋) |
280 | 259, 278,
279, 270 | syl3anc 1326 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → ((1st ‘(𝑔‘𝑏))𝐶𝑥) ∈
ℝ*) |
281 | | xmetge0 22149 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . 41
⊢ ((𝐶 ∈ (∞Met‘𝑋) ∧ (1st
‘(𝑔‘𝑏)) ∈ 𝑋 ∧ 𝑥 ∈ 𝑋) → 0 ≤ ((1st
‘(𝑔‘𝑏))𝐶𝑥)) |
282 | 259, 278,
279, 281 | syl3anc 1326 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → 0 ≤ ((1st
‘(𝑔‘𝑏))𝐶𝑥)) |
283 | | xrrege0 12005 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . 42
⊢
(((((1st ‘(𝑔‘𝑏))𝐶𝑥) ∈ ℝ* ∧
(2nd ‘(𝑔‘𝑏)) ∈ ℝ) ∧ (0 ≤
((1st ‘(𝑔‘𝑏))𝐶𝑥) ∧ ((1st ‘(𝑔‘𝑏))𝐶𝑥) ≤ (2nd ‘(𝑔‘𝑏)))) → ((1st ‘(𝑔‘𝑏))𝐶𝑥) ∈ ℝ) |
284 | 283 | an4s 869 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . 41
⊢
(((((1st ‘(𝑔‘𝑏))𝐶𝑥) ∈ ℝ* ∧ 0 ≤
((1st ‘(𝑔‘𝑏))𝐶𝑥)) ∧ ((2nd ‘(𝑔‘𝑏)) ∈ ℝ ∧ ((1st
‘(𝑔‘𝑏))𝐶𝑥) ≤ (2nd ‘(𝑔‘𝑏)))) → ((1st ‘(𝑔‘𝑏))𝐶𝑥) ∈ ℝ) |
285 | 284 | ex 450 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢
((((1st ‘(𝑔‘𝑏))𝐶𝑥) ∈ ℝ* ∧ 0 ≤
((1st ‘(𝑔‘𝑏))𝐶𝑥)) → (((2nd ‘(𝑔‘𝑏)) ∈ ℝ ∧ ((1st
‘(𝑔‘𝑏))𝐶𝑥) ≤ (2nd ‘(𝑔‘𝑏))) → ((1st ‘(𝑔‘𝑏))𝐶𝑥) ∈ ℝ)) |
286 | 280, 282,
285 | syl2anc 693 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . 39
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → (((2nd ‘(𝑔‘𝑏)) ∈ ℝ ∧ ((1st
‘(𝑔‘𝑏))𝐶𝑥) ≤ (2nd ‘(𝑔‘𝑏))) → ((1st ‘(𝑔‘𝑏))𝐶𝑥) ∈ ℝ)) |
287 | 286 | ad2ant2r 783 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . 38
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → (((2nd ‘(𝑔‘𝑏)) ∈ ℝ ∧ ((1st
‘(𝑔‘𝑏))𝐶𝑥) ≤ (2nd ‘(𝑔‘𝑏))) → ((1st ‘(𝑔‘𝑏))𝐶𝑥) ∈ ℝ)) |
288 | 257, 276,
287 | mp2and 715 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((1st ‘(𝑔‘𝑏))𝐶𝑥) ∈ ℝ) |
289 | 288 | adantr 481 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏))) → ((1st ‘(𝑔‘𝑏))𝐶𝑥) ∈ ℝ) |
290 | | xrltle 11982 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢ (((𝑥𝐶𝑤) ∈ ℝ* ∧
(2nd ‘(𝑔‘𝑏)) ∈ ℝ*) → ((𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏)) → (𝑥𝐶𝑤) ≤ (2nd ‘(𝑔‘𝑏)))) |
291 | 224, 238,
290 | syl2anc 693 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . 39
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏)) → (𝑥𝐶𝑤) ≤ (2nd ‘(𝑔‘𝑏)))) |
292 | | xmetge0 22149 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . 43
⊢ ((𝐶 ∈ (∞Met‘𝑋) ∧ 𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋) → 0 ≤ (𝑥𝐶𝑤)) |
293 | 292 | 3expb 1266 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . 42
⊢ ((𝐶 ∈ (∞Met‘𝑋) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) → 0 ≤ (𝑥𝐶𝑤)) |
294 | 220, 293 | sylan 488 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . 41
⊢
(((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) → 0 ≤ (𝑥𝐶𝑤)) |
295 | 294 | adantr 481 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → 0 ≤ (𝑥𝐶𝑤)) |
296 | 236 | rpred 11872 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . 42
⊢
(((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ 𝑏 ∈ 𝑠) → (2nd ‘(𝑔‘𝑏)) ∈ ℝ) |
297 | 296 | ad2ant2r 783 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . 41
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → (2nd ‘(𝑔‘𝑏)) ∈ ℝ) |
298 | | xrrege0 12005 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . 42
⊢ ((((𝑥𝐶𝑤) ∈ ℝ* ∧
(2nd ‘(𝑔‘𝑏)) ∈ ℝ) ∧ (0 ≤ (𝑥𝐶𝑤) ∧ (𝑥𝐶𝑤) ≤ (2nd ‘(𝑔‘𝑏)))) → (𝑥𝐶𝑤) ∈ ℝ) |
299 | 298 | ex 450 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . 41
⊢ (((𝑥𝐶𝑤) ∈ ℝ* ∧
(2nd ‘(𝑔‘𝑏)) ∈ ℝ) → ((0 ≤ (𝑥𝐶𝑤) ∧ (𝑥𝐶𝑤) ≤ (2nd ‘(𝑔‘𝑏))) → (𝑥𝐶𝑤) ∈ ℝ)) |
300 | 224, 297,
299 | syl2anc 693 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((0 ≤ (𝑥𝐶𝑤) ∧ (𝑥𝐶𝑤) ≤ (2nd ‘(𝑔‘𝑏))) → (𝑥𝐶𝑤) ∈ ℝ)) |
301 | 295, 300 | mpand 711 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . 39
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((𝑥𝐶𝑤) ≤ (2nd ‘(𝑔‘𝑏)) → (𝑥𝐶𝑤) ∈ ℝ)) |
302 | 291, 301 | syld 47 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . 38
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏)) → (𝑥𝐶𝑤) ∈ ℝ)) |
303 | 302 | adantlr 751 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏)) → (𝑥𝐶𝑤) ∈ ℝ)) |
304 | 303 | imp 445 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏))) → (𝑥𝐶𝑤) ∈ ℝ) |
305 | 289, 304 | readdcld 10069 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏))) → (((1st ‘(𝑔‘𝑏))𝐶𝑥) + (𝑥𝐶𝑤)) ∈ ℝ) |
306 | 305 | rexrd 10089 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏))) → (((1st ‘(𝑔‘𝑏))𝐶𝑥) + (𝑥𝐶𝑤)) ∈
ℝ*) |
307 | 256, 256 | rpaddcld 11887 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) ∈
ℝ+) |
308 | 307 | rpxrd 11873 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) ∈
ℝ*) |
309 | 308 | adantr 481 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏))) → ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) ∈
ℝ*) |
310 | | xmettri 22156 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢ ((𝐶 ∈ (∞Met‘𝑋) ∧ ((1st
‘(𝑔‘𝑏)) ∈ 𝑋 ∧ 𝑤 ∈ 𝑋 ∧ 𝑥 ∈ 𝑋)) → ((1st ‘(𝑔‘𝑏))𝐶𝑤) ≤ (((1st ‘(𝑔‘𝑏))𝐶𝑥) +𝑒 (𝑥𝐶𝑤))) |
311 | 243, 248,
250, 269, 310 | syl13anc 1328 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((1st ‘(𝑔‘𝑏))𝐶𝑤) ≤ (((1st ‘(𝑔‘𝑏))𝐶𝑥) +𝑒 (𝑥𝐶𝑤))) |
312 | 311 | adantr 481 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏))) → ((1st ‘(𝑔‘𝑏))𝐶𝑤) ≤ (((1st ‘(𝑔‘𝑏))𝐶𝑥) +𝑒 (𝑥𝐶𝑤))) |
313 | | rexadd 12063 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢
((((1st ‘(𝑔‘𝑏))𝐶𝑥) ∈ ℝ ∧ (𝑥𝐶𝑤) ∈ ℝ) → (((1st
‘(𝑔‘𝑏))𝐶𝑥) +𝑒 (𝑥𝐶𝑤)) = (((1st ‘(𝑔‘𝑏))𝐶𝑥) + (𝑥𝐶𝑤))) |
314 | 289, 304,
313 | syl2anc 693 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏))) → (((1st ‘(𝑔‘𝑏))𝐶𝑥) +𝑒 (𝑥𝐶𝑤)) = (((1st ‘(𝑔‘𝑏))𝐶𝑥) + (𝑥𝐶𝑤))) |
315 | 312, 314 | breqtrd 4679 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏))) → ((1st ‘(𝑔‘𝑏))𝐶𝑤) ≤ (((1st ‘(𝑔‘𝑏))𝐶𝑥) + (𝑥𝐶𝑤))) |
316 | 257 | adantr 481 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏))) → (2nd ‘(𝑔‘𝑏)) ∈ ℝ) |
317 | 268 | adantr 481 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏))) → ((1st ‘(𝑔‘𝑏))𝐶𝑥) < (2nd ‘(𝑔‘𝑏))) |
318 | | simpr 477 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏))) → (𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏))) |
319 | 289, 304,
316, 316, 317, 318 | lt2addd 10650 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏))) → (((1st ‘(𝑔‘𝑏))𝐶𝑥) + (𝑥𝐶𝑤)) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏)))) |
320 | 253, 306,
309, 315, 319 | xrlelttrd 11991 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
33
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏))) → ((1st ‘(𝑔‘𝑏))𝐶𝑤) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏)))) |
321 | 320 | ex 450 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
32
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏)) → ((1st ‘(𝑔‘𝑏))𝐶𝑤) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))))) |
322 | 254 | rpred 11872 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢ ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏 ∈ 𝑠) → (2nd ‘(𝑔‘𝑏)) ∈ ℝ) |
323 | 322, 254 | ltaddrpd 11905 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢ ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏 ∈ 𝑠) → (2nd ‘(𝑔‘𝑏)) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏)))) |
324 | 244, 226,
323 | syl2an 494 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
33
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → (2nd ‘(𝑔‘𝑏)) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏)))) |
325 | 271, 273,
308, 268, 324 | xrlttrd 11990 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
32
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((1st ‘(𝑔‘𝑏))𝐶𝑥) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏)))) |
326 | 321, 325 | jctild 566 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
31
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏)) → (((1st ‘(𝑔‘𝑏))𝐶𝑥) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) ∧ ((1st ‘(𝑔‘𝑏))𝐶𝑤) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏)))))) |
327 | 242, 326 | syld 47 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → (((1st
‘(𝑔‘𝑏))𝐶𝑥) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) ∧ ((1st ‘(𝑔‘𝑏))𝐶𝑤) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏)))))) |
328 | | simpll 790 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢ ((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → (𝜑 ∧ 𝑓:𝑋⟶𝑌)) |
329 | | heicant.d |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢ (𝜑 → 𝐷 ∈ (∞Met‘𝑌)) |
330 | | ffvelrn 6357 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢ ((𝑓:𝑋⟶𝑌 ∧ 𝑥 ∈ 𝑋) → (𝑓‘𝑥) ∈ 𝑌) |
331 | | ffvelrn 6357 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢ ((𝑓:𝑋⟶𝑌 ∧ 𝑤 ∈ 𝑋) → (𝑓‘𝑤) ∈ 𝑌) |
332 | 330, 331 | anim12dan 882 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢ ((𝑓:𝑋⟶𝑌 ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) → ((𝑓‘𝑥) ∈ 𝑌 ∧ (𝑓‘𝑤) ∈ 𝑌)) |
333 | | xmetcl 22136 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢ ((𝐷 ∈ (∞Met‘𝑌) ∧ (𝑓‘𝑥) ∈ 𝑌 ∧ (𝑓‘𝑤) ∈ 𝑌) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) ∈
ℝ*) |
334 | 333 | 3expb 1266 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢ ((𝐷 ∈ (∞Met‘𝑌) ∧ ((𝑓‘𝑥) ∈ 𝑌 ∧ (𝑓‘𝑤) ∈ 𝑌)) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) ∈
ℝ*) |
335 | 329, 332,
334 | syl2an 494 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢ ((𝜑 ∧ (𝑓:𝑋⟶𝑌 ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋))) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) ∈
ℝ*) |
336 | 335 | anassrs 680 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢ (((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) ∈
ℝ*) |
337 | 328, 336 | sylan 488 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
33
⊢
(((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) ∈
ℝ*) |
338 | 337 | ad3antrrr 766 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
32
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) ∈
ℝ*) |
339 | 329 | ad5antr 770 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → 𝐷 ∈ (∞Met‘𝑌)) |
340 | | simp-5r 809 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . 41
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → 𝑓:𝑋⟶𝑌) |
341 | 340, 278 | ffvelrnd 6360 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → (𝑓‘(1st ‘(𝑔‘𝑏))) ∈ 𝑌) |
342 | | simpllr 799 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . 43
⊢ ((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → 𝑓:𝑋⟶𝑌) |
343 | 342 | ffvelrnda 6359 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . 42
⊢
(((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ 𝑥 ∈ 𝑋) → (𝑓‘𝑥) ∈ 𝑌) |
344 | 343 | adantrr 753 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . 41
⊢
(((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) → (𝑓‘𝑥) ∈ 𝑌) |
345 | 344 | adantr 481 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → (𝑓‘𝑥) ∈ 𝑌) |
346 | | xmetcl 22136 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢ ((𝐷 ∈ (∞Met‘𝑌) ∧ (𝑓‘(1st ‘(𝑔‘𝑏))) ∈ 𝑌 ∧ (𝑓‘𝑥) ∈ 𝑌) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ∈
ℝ*) |
347 | 339, 341,
345, 346 | syl3anc 1326 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . 39
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ∈
ℝ*) |
348 | 9 | rpxrd 11873 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢ (𝑑 ∈ ℝ+
→ (𝑑 / 2) ∈
ℝ*) |
349 | 348 | ad4antlr 769 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . 39
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → (𝑑 / 2) ∈
ℝ*) |
350 | | xrltle 11982 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . 39
⊢ ((((𝑓‘(1st
‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ∈ ℝ* ∧ (𝑑 / 2) ∈
ℝ*) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ≤ (𝑑 / 2))) |
351 | 347, 349,
350 | syl2anc 693 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . 38
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ≤ (𝑑 / 2))) |
352 | | xmetge0 22149 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢ ((𝐷 ∈ (∞Met‘𝑌) ∧ (𝑓‘(1st ‘(𝑔‘𝑏))) ∈ 𝑌 ∧ (𝑓‘𝑥) ∈ 𝑌) → 0 ≤ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥))) |
353 | 339, 341,
345, 352 | syl3anc 1326 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . 39
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → 0 ≤ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥))) |
354 | 9 | rpred 11872 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . 41
⊢ (𝑑 ∈ ℝ+
→ (𝑑 / 2) ∈
ℝ) |
355 | 354 | ad4antlr 769 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → (𝑑 / 2) ∈ ℝ) |
356 | | xrrege0 12005 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . 41
⊢
(((((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ∈ ℝ* ∧ (𝑑 / 2) ∈ ℝ) ∧ (0
≤ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ≤ (𝑑 / 2))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ∈ ℝ) |
357 | 356 | ex 450 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢ ((((𝑓‘(1st
‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ∈ ℝ* ∧ (𝑑 / 2) ∈ ℝ) → ((0
≤ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ≤ (𝑑 / 2)) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ∈ ℝ)) |
358 | 347, 355,
357 | syl2anc 693 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . 39
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → ((0 ≤ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ≤ (𝑑 / 2)) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ∈ ℝ)) |
359 | 353, 358 | mpand 711 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . 38
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ≤ (𝑑 / 2) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ∈ ℝ)) |
360 | 351, 359 | syld 47 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ∈ ℝ)) |
361 | 360 | ad2ant2r 783 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ∈ ℝ)) |
362 | 361 | imp 445 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2)) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ∈ ℝ) |
363 | 342 | ffvelrnda 6359 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . 42
⊢
(((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ 𝑤 ∈ 𝑋) → (𝑓‘𝑤) ∈ 𝑌) |
364 | 363 | adantrl 752 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . 41
⊢
(((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) → (𝑓‘𝑤) ∈ 𝑌) |
365 | 364 | adantr 481 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → (𝑓‘𝑤) ∈ 𝑌) |
366 | | xmetcl 22136 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢ ((𝐷 ∈ (∞Met‘𝑌) ∧ (𝑓‘(1st ‘(𝑔‘𝑏))) ∈ 𝑌 ∧ (𝑓‘𝑤) ∈ 𝑌) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ∈
ℝ*) |
367 | 339, 341,
365, 366 | syl3anc 1326 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . 39
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ∈
ℝ*) |
368 | | xrltle 11982 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . 39
⊢ ((((𝑓‘(1st
‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ∈ ℝ* ∧ (𝑑 / 2) ∈
ℝ*) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ≤ (𝑑 / 2))) |
369 | 367, 349,
368 | syl2anc 693 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . 38
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ≤ (𝑑 / 2))) |
370 | | xmetge0 22149 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢ ((𝐷 ∈ (∞Met‘𝑌) ∧ (𝑓‘(1st ‘(𝑔‘𝑏))) ∈ 𝑌 ∧ (𝑓‘𝑤) ∈ 𝑌) → 0 ≤ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤))) |
371 | 339, 341,
365, 370 | syl3anc 1326 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . 39
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → 0 ≤ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤))) |
372 | | xrrege0 12005 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . 41
⊢
(((((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ∈ ℝ* ∧ (𝑑 / 2) ∈ ℝ) ∧ (0
≤ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ≤ (𝑑 / 2))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ∈ ℝ) |
373 | 372 | ex 450 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢ ((((𝑓‘(1st
‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ∈ ℝ* ∧ (𝑑 / 2) ∈ ℝ) → ((0
≤ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ≤ (𝑑 / 2)) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ∈ ℝ)) |
374 | 367, 355,
373 | syl2anc 693 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . 39
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → ((0 ≤ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ≤ (𝑑 / 2)) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ∈ ℝ)) |
375 | 371, 374 | mpand 711 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . 38
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ≤ (𝑑 / 2) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ∈ ℝ)) |
376 | 369, 375 | syld 47 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ∈ ℝ)) |
377 | 376 | ad2ant2r 783 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ∈ ℝ)) |
378 | 377 | imp 445 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2)) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ∈ ℝ) |
379 | | readdcl 10019 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢ ((((𝑓‘(1st
‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ∈ ℝ ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ∈ ℝ) → (((𝑓‘(1st
‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) + ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤))) ∈ ℝ) |
380 | 362, 378,
379 | syl2an 494 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢
(((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2)) ∧ (((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) + ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤))) ∈ ℝ) |
381 | 380 | anandis 873 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
33
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) + ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤))) ∈ ℝ) |
382 | 381 | rexrd 10089 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
32
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) + ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤))) ∈
ℝ*) |
383 | | rpxr 11840 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
33
⊢ (𝑑 ∈ ℝ+
→ 𝑑 ∈
ℝ*) |
384 | 383 | ad6antlr 773 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
32
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → 𝑑 ∈ ℝ*) |
385 | | xmettri 22156 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢ ((𝐷 ∈ (∞Met‘𝑌) ∧ ((𝑓‘𝑥) ∈ 𝑌 ∧ (𝑓‘𝑤) ∈ 𝑌 ∧ (𝑓‘(1st ‘(𝑔‘𝑏))) ∈ 𝑌)) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) ≤ (((𝑓‘𝑥)𝐷(𝑓‘(1st ‘(𝑔‘𝑏)))) +𝑒 ((𝑓‘(1st
‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)))) |
386 | 339, 345,
365, 341, 385 | syl13anc 1328 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) ≤ (((𝑓‘𝑥)𝐷(𝑓‘(1st ‘(𝑔‘𝑏)))) +𝑒 ((𝑓‘(1st
‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)))) |
387 | 386 | ad2ant2r 783 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) ≤ (((𝑓‘𝑥)𝐷(𝑓‘(1st ‘(𝑔‘𝑏)))) +𝑒 ((𝑓‘(1st
‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)))) |
388 | 387 | adantr 481 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
33
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) ≤ (((𝑓‘𝑥)𝐷(𝑓‘(1st ‘(𝑔‘𝑏)))) +𝑒 ((𝑓‘(1st
‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)))) |
389 | | xmetsym 22152 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . 38
⊢ ((𝐷 ∈ (∞Met‘𝑌) ∧ (𝑓‘𝑥) ∈ 𝑌 ∧ (𝑓‘(1st ‘(𝑔‘𝑏))) ∈ 𝑌) → ((𝑓‘𝑥)𝐷(𝑓‘(1st ‘(𝑔‘𝑏)))) = ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥))) |
390 | 339, 345,
341, 389 | syl3anc 1326 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → ((𝑓‘𝑥)𝐷(𝑓‘(1st ‘(𝑔‘𝑏)))) = ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥))) |
391 | 390 | ad2ant2r 783 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((𝑓‘𝑥)𝐷(𝑓‘(1st ‘(𝑔‘𝑏)))) = ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥))) |
392 | 391 | adantr 481 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → ((𝑓‘𝑥)𝐷(𝑓‘(1st ‘(𝑔‘𝑏)))) = ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥))) |
393 | 392 | oveq1d 6665 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → (((𝑓‘𝑥)𝐷(𝑓‘(1st ‘(𝑔‘𝑏)))) +𝑒 ((𝑓‘(1st
‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤))) = (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) +𝑒 ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)))) |
394 | | rexadd 12063 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢ ((((𝑓‘(1st
‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ∈ ℝ ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ∈ ℝ) → (((𝑓‘(1st
‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) +𝑒 ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤))) = (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) + ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)))) |
395 | 362, 378,
394 | syl2an 494 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢
(((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2)) ∧ (((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) +𝑒 ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤))) = (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) + ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)))) |
396 | 395 | anandis 873 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) +𝑒 ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤))) = (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) + ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)))) |
397 | 393, 396 | eqtrd 2656 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
33
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → (((𝑓‘𝑥)𝐷(𝑓‘(1st ‘(𝑔‘𝑏)))) +𝑒 ((𝑓‘(1st
‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤))) = (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) + ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)))) |
398 | 388, 397 | breqtrd 4679 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
32
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) ≤ (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) + ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)))) |
399 | | lt2add 10513 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . 39
⊢
(((((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ∈ ℝ ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ∈ ℝ) ∧ ((𝑑 / 2) ∈ ℝ ∧ (𝑑 / 2) ∈ ℝ)) →
((((𝑓‘(1st
‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2)) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) + ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤))) < ((𝑑 / 2) + (𝑑 / 2)))) |
400 | 399 | expcom 451 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . 38
⊢ (((𝑑 / 2) ∈ ℝ ∧
(𝑑 / 2) ∈ ℝ)
→ ((((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ∈ ℝ ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ∈ ℝ) → ((((𝑓‘(1st
‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2)) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) + ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤))) < ((𝑑 / 2) + (𝑑 / 2))))) |
401 | 355, 355,
400 | syl2anc 693 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → ((((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ∈ ℝ ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ∈ ℝ) → ((((𝑓‘(1st
‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2)) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) + ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤))) < ((𝑑 / 2) + (𝑑 / 2))))) |
402 | 360, 376,
401 | syl2and 500 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → ((((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2)) → ((((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2)) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) + ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤))) < ((𝑑 / 2) + (𝑑 / 2))))) |
403 | 402 | pm2.43d 53 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → ((((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2)) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) + ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤))) < ((𝑑 / 2) + (𝑑 / 2)))) |
404 | 403 | ad2ant2r 783 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2)) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) + ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤))) < ((𝑑 / 2) + (𝑑 / 2)))) |
405 | 404 | imp 445 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
33
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) + ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤))) < ((𝑑 / 2) + (𝑑 / 2))) |
406 | | rpcn 11841 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢ (𝑑 ∈ ℝ+
→ 𝑑 ∈
ℂ) |
407 | 406 | 2halvesd 11278 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢ (𝑑 ∈ ℝ+
→ ((𝑑 / 2) + (𝑑 / 2)) = 𝑑) |
408 | 407 | ad6antlr 773 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
33
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → ((𝑑 / 2) + (𝑑 / 2)) = 𝑑) |
409 | 405, 408 | breqtrd 4679 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
32
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) + ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤))) < 𝑑) |
410 | 338, 382,
384, 398, 409 | xrlelttrd 11991 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
31
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑) |
411 | 410 | ex 450 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2)) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑)) |
412 | 327, 411 | imim12d 81 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → (((((1st ‘(𝑔‘𝑏))𝐶𝑥) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) ∧ ((1st ‘(𝑔‘𝑏))𝐶𝑤) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏)))) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑))) |
413 | 197, 412 | sylanl1 682 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . 28
⊢
(((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → (((((1st ‘(𝑔‘𝑏))𝐶𝑥) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) ∧ ((1st ‘(𝑔‘𝑏))𝐶𝑤) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏)))) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑))) |
414 | 413 | adantlrr 757 |
. . . . . . . . . . . . . . . . . . . . . . . . . . 27
⊢
(((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → (((((1st ‘(𝑔‘𝑏))𝐶𝑥) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) ∧ ((1st ‘(𝑔‘𝑏))𝐶𝑤) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏)))) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑))) |
415 | 194, 414 | mpd 15 |
. . . . . . . . . . . . . . . . . . . . . . . . . 26
⊢
(((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑)) |
416 | 415 | exp32 631 |
. . . . . . . . . . . . . . . . . . . . . . . . 25
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) → (𝑏 ∈ 𝑠 → (𝑥 ∈ 𝑏 → ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑)))) |
417 | 175, 416 | sylan2 491 |
. . . . . . . . . . . . . . . . . . . . . . . 24
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ (∀𝑏 ∈ 𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2))) ∧ 𝑏 ∈ 𝑠)) → (𝑏 ∈ 𝑠 → (𝑥 ∈ 𝑏 → ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑)))) |
418 | 417 | expr 643 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ ∀𝑏 ∈ 𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) → (𝑏 ∈ 𝑠 → (𝑏 ∈ 𝑠 → (𝑥 ∈ 𝑏 → ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑))))) |
419 | 418 | pm2.43d 53 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ ∀𝑏 ∈ 𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) → (𝑏 ∈ 𝑠 → (𝑥 ∈ 𝑏 → ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑)))) |
420 | 419 | an32s 846 |
. . . . . . . . . . . . . . . . . . . . 21
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧
∀𝑏 ∈ 𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) → (𝑏 ∈ 𝑠 → (𝑥 ∈ 𝑏 → ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑)))) |
421 | 173, 174,
420 | rexlimd 3026 |
. . . . . . . . . . . . . . . . . . . 20
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧
∀𝑏 ∈ 𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) → (∃𝑏 ∈ 𝑠 𝑥 ∈ 𝑏 → ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑))) |
422 | 168, 421 | mpd 15 |
. . . . . . . . . . . . . . . . . . 19
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧
∀𝑏 ∈ 𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) → ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑)) |
423 | 422 | ralrimivva 2971 |
. . . . . . . . . . . . . . . . . 18
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧
∀𝑏 ∈ 𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) → ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑)) |
424 | | breq2 4657 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ (𝑧 = inf(ran ran 𝑔, ℝ, < ) → ((𝑥𝐶𝑤) < 𝑧 ↔ (𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ))) |
425 | 424 | imbi1d 331 |
. . . . . . . . . . . . . . . . . . . 20
⊢ (𝑧 = inf(ran ran 𝑔, ℝ, < ) →
(((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑) ↔ ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑))) |
426 | 425 | 2ralbidv 2989 |
. . . . . . . . . . . . . . . . . . 19
⊢ (𝑧 = inf(ran ran 𝑔, ℝ, < ) →
(∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑) ↔ ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑))) |
427 | 426 | rspcev 3309 |
. . . . . . . . . . . . . . . . . 18
⊢ ((inf(ran
ran 𝑔, ℝ, < )
∈ ℝ+ ∧ ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑)) → ∃𝑧 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑)) |
428 | 159, 423,
427 | syl2anc 693 |
. . . . . . . . . . . . . . . . 17
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧
∀𝑏 ∈ 𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) → ∃𝑧 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑)) |
429 | 428 | expl 648 |
. . . . . . . . . . . . . . . 16
⊢
(((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) → ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧
∀𝑏 ∈ 𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) → ∃𝑧 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑))) |
430 | 429 | exlimdv 1861 |
. . . . . . . . . . . . . . 15
⊢
(((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) → (∃𝑔(𝑔:𝑠⟶(𝑋 × ℝ+) ∧
∀𝑏 ∈ 𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) → ∃𝑧 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑))) |
431 | 430 | expimpd 629 |
. . . . . . . . . . . . . 14
⊢ ((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) → ((∪ (MetOpen‘𝐶) = ∪ 𝑠 ∧ ∃𝑔(𝑔:𝑠⟶(𝑋 × ℝ+) ∧
∀𝑏 ∈ 𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2))))) → ∃𝑧 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑))) |
432 | 103, 431 | sylan2 491 |
. . . . . . . . . . . . 13
⊢ ((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ (𝒫
(MetOpen‘𝐶) ∩
Fin)) → ((∪ (MetOpen‘𝐶) = ∪ 𝑠 ∧ ∃𝑔(𝑔:𝑠⟶(𝑋 × ℝ+) ∧
∀𝑏 ∈ 𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2))))) → ∃𝑧 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑))) |
433 | 432 | rexlimdva 3031 |
. . . . . . . . . . . 12
⊢ (((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) →
(∃𝑠 ∈ (𝒫
(MetOpen‘𝐶) ∩
Fin)(∪ (MetOpen‘𝐶) = ∪ 𝑠 ∧ ∃𝑔(𝑔:𝑠⟶(𝑋 × ℝ+) ∧
∀𝑏 ∈ 𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2))))) → ∃𝑧 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑))) |
434 | 102, 433 | syld 47 |
. . . . . . . . . . 11
⊢ (((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) →
(∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2)) → ∃𝑧 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑))) |
435 | 15, 434 | syl5 34 |
. . . . . . . . . 10
⊢ (((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) → (((𝑑 / 2) ∈ ℝ+
∧ ∀𝑦 ∈
ℝ+ ∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦)) → ∃𝑧 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑))) |
436 | 435 | exp4b 632 |
. . . . . . . . 9
⊢ ((𝜑 ∧ 𝑓:𝑋⟶𝑌) → (𝑑 ∈ ℝ+ → ((𝑑 / 2) ∈ ℝ+
→ (∀𝑦 ∈
ℝ+ ∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦) → ∃𝑧 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑))))) |
437 | 9, 436 | mpdi 45 |
. . . . . . . 8
⊢ ((𝜑 ∧ 𝑓:𝑋⟶𝑌) → (𝑑 ∈ ℝ+ →
(∀𝑦 ∈
ℝ+ ∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦) → ∃𝑧 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑)))) |
438 | 437 | ralrimiv 2965 |
. . . . . . 7
⊢ ((𝜑 ∧ 𝑓:𝑋⟶𝑌) → ∀𝑑 ∈ ℝ+ (∀𝑦 ∈ ℝ+
∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦) → ∃𝑧 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑))) |
439 | | r19.21v 2960 |
. . . . . . 7
⊢
(∀𝑑 ∈
ℝ+ (∀𝑦 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦) → ∃𝑧 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑)) ↔ (∀𝑦 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦) → ∀𝑑 ∈ ℝ+ ∃𝑧 ∈ ℝ+
∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑))) |
440 | 438, 439 | sylib 208 |
. . . . . 6
⊢ ((𝜑 ∧ 𝑓:𝑋⟶𝑌) → (∀𝑦 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦) → ∀𝑑 ∈ ℝ+ ∃𝑧 ∈ ℝ+
∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑))) |
441 | 8, 440 | impbid2 216 |
. . . . 5
⊢ ((𝜑 ∧ 𝑓:𝑋⟶𝑌) → (∀𝑑 ∈ ℝ+ ∃𝑧 ∈ ℝ+
∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑) ↔ ∀𝑦 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦))) |
442 | | ralcom 3098 |
. . . . 5
⊢
(∀𝑦 ∈
ℝ+ ∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦) ↔ ∀𝑥 ∈ 𝑋 ∀𝑦 ∈ ℝ+ ∃𝑧 ∈ ℝ+
∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦)) |
443 | 441, 442 | syl6bb 276 |
. . . 4
⊢ ((𝜑 ∧ 𝑓:𝑋⟶𝑌) → (∀𝑑 ∈ ℝ+ ∃𝑧 ∈ ℝ+
∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑) ↔ ∀𝑥 ∈ 𝑋 ∀𝑦 ∈ ℝ+ ∃𝑧 ∈ ℝ+
∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦))) |
444 | 443 | pm5.32da 673 |
. . 3
⊢ (𝜑 → ((𝑓:𝑋⟶𝑌 ∧ ∀𝑑 ∈ ℝ+ ∃𝑧 ∈ ℝ+
∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑)) ↔ (𝑓:𝑋⟶𝑌 ∧ ∀𝑥 ∈ 𝑋 ∀𝑦 ∈ ℝ+ ∃𝑧 ∈ ℝ+
∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦)))) |
445 | | eqid 2622 |
. . . 4
⊢
(metUnif‘𝐶) =
(metUnif‘𝐶) |
446 | | eqid 2622 |
. . . 4
⊢
(metUnif‘𝐷) =
(metUnif‘𝐷) |
447 | | heicant.y |
. . . 4
⊢ (𝜑 → 𝑌 ≠ ∅) |
448 | | xmetpsmet 22153 |
. . . . 5
⊢ (𝐶 ∈ (∞Met‘𝑋) → 𝐶 ∈ (PsMet‘𝑋)) |
449 | 18, 448 | syl 17 |
. . . 4
⊢ (𝜑 → 𝐶 ∈ (PsMet‘𝑋)) |
450 | | xmetpsmet 22153 |
. . . . 5
⊢ (𝐷 ∈ (∞Met‘𝑌) → 𝐷 ∈ (PsMet‘𝑌)) |
451 | 329, 450 | syl 17 |
. . . 4
⊢ (𝜑 → 𝐷 ∈ (PsMet‘𝑌)) |
452 | 445, 446,
129, 447, 449, 451 | metucn 22376 |
. . 3
⊢ (𝜑 → (𝑓 ∈ ((metUnif‘𝐶) Cnu(metUnif‘𝐷)) ↔ (𝑓:𝑋⟶𝑌 ∧ ∀𝑑 ∈ ℝ+ ∃𝑧 ∈ ℝ+
∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑)))) |
453 | | eqid 2622 |
. . . . 5
⊢
(MetOpen‘𝐷) =
(MetOpen‘𝐷) |
454 | 23, 453 | metcn 22348 |
. . . 4
⊢ ((𝐶 ∈ (∞Met‘𝑋) ∧ 𝐷 ∈ (∞Met‘𝑌)) → (𝑓 ∈ ((MetOpen‘𝐶) Cn (MetOpen‘𝐷)) ↔ (𝑓:𝑋⟶𝑌 ∧ ∀𝑥 ∈ 𝑋 ∀𝑦 ∈ ℝ+ ∃𝑧 ∈ ℝ+
∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦)))) |
455 | 18, 329, 454 | syl2anc 693 |
. . 3
⊢ (𝜑 → (𝑓 ∈ ((MetOpen‘𝐶) Cn (MetOpen‘𝐷)) ↔ (𝑓:𝑋⟶𝑌 ∧ ∀𝑥 ∈ 𝑋 ∀𝑦 ∈ ℝ+ ∃𝑧 ∈ ℝ+
∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦)))) |
456 | 444, 452,
455 | 3bitr4d 300 |
. 2
⊢ (𝜑 → (𝑓 ∈ ((metUnif‘𝐶) Cnu(metUnif‘𝐷)) ↔ 𝑓 ∈ ((MetOpen‘𝐶) Cn (MetOpen‘𝐷)))) |
457 | 456 | eqrdv 2620 |
1
⊢ (𝜑 → ((metUnif‘𝐶)
Cnu(metUnif‘𝐷)) = ((MetOpen‘𝐶) Cn (MetOpen‘𝐷))) |