| Step | Hyp | Ref
| Expression |
| 1 | | f1ocnv 6149 |
. . . . . . . . 9
⊢ (𝐹:𝑋–1-1-onto→𝑌 → ◡𝐹:𝑌–1-1-onto→𝑋) |
| 2 | | f1ofun 6139 |
. . . . . . . . 9
⊢ (◡𝐹:𝑌–1-1-onto→𝑋 → Fun ◡𝐹) |
| 3 | 1, 2 | syl 17 |
. . . . . . . 8
⊢ (𝐹:𝑋–1-1-onto→𝑌 → Fun ◡𝐹) |
| 4 | 3 | ad2antlr 763 |
. . . . . . 7
⊢ (((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) → Fun ◡𝐹) |
| 5 | | simpr 477 |
. . . . . . . 8
⊢ (((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) → 𝑥 ⊆ 𝑌) |
| 6 | | df-rn 5125 |
. . . . . . . . 9
⊢ ran 𝐹 = dom ◡𝐹 |
| 7 | | f1ofo 6144 |
. . . . . . . . . . 11
⊢ (𝐹:𝑋–1-1-onto→𝑌 → 𝐹:𝑋–onto→𝑌) |
| 8 | 7 | ad2antlr 763 |
. . . . . . . . . 10
⊢ (((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) → 𝐹:𝑋–onto→𝑌) |
| 9 | | forn 6118 |
. . . . . . . . . 10
⊢ (𝐹:𝑋–onto→𝑌 → ran 𝐹 = 𝑌) |
| 10 | 8, 9 | syl 17 |
. . . . . . . . 9
⊢ (((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) → ran 𝐹 = 𝑌) |
| 11 | 6, 10 | syl5eqr 2670 |
. . . . . . . 8
⊢ (((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) → dom ◡𝐹 = 𝑌) |
| 12 | 5, 11 | sseqtr4d 3642 |
. . . . . . 7
⊢ (((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) → 𝑥 ⊆ dom ◡𝐹) |
| 13 | | funimass4 6247 |
. . . . . . 7
⊢ ((Fun
◡𝐹 ∧ 𝑥 ⊆ dom ◡𝐹) → ((◡𝐹 “ 𝑥) ⊆ ∪ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥)) ↔ ∀𝑦 ∈ 𝑥 (◡𝐹‘𝑦) ∈ ∪ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥)))) |
| 14 | 4, 12, 13 | syl2anc 693 |
. . . . . 6
⊢ (((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) → ((◡𝐹 “ 𝑥) ⊆ ∪ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥)) ↔ ∀𝑦 ∈ 𝑥 (◡𝐹‘𝑦) ∈ ∪ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥)))) |
| 15 | | dfss3 3592 |
. . . . . . 7
⊢ (𝑥 ⊆ ∪ ((𝐽
qTop 𝐹) ∩ 𝒫
𝑥) ↔ ∀𝑦 ∈ 𝑥 𝑦 ∈ ∪ ((𝐽 qTop 𝐹) ∩ 𝒫 𝑥)) |
| 16 | | inss1 3833 |
. . . . . . . . . . . . . . . 16
⊢ ((𝐽 qTop 𝐹) ∩ 𝒫 𝑥) ⊆ (𝐽 qTop 𝐹) |
| 17 | | simprl 794 |
. . . . . . . . . . . . . . . 16
⊢
(((((𝐽 ∈
TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) ∧ (𝑧 ∈ ((𝐽 qTop 𝐹) ∩ 𝒫 𝑥) ∧ 𝑦 ∈ 𝑧)) → 𝑧 ∈ ((𝐽 qTop 𝐹) ∩ 𝒫 𝑥)) |
| 18 | 16, 17 | sseldi 3601 |
. . . . . . . . . . . . . . 15
⊢
(((((𝐽 ∈
TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) ∧ (𝑧 ∈ ((𝐽 qTop 𝐹) ∩ 𝒫 𝑥) ∧ 𝑦 ∈ 𝑧)) → 𝑧 ∈ (𝐽 qTop 𝐹)) |
| 19 | | qtopcmp.1 |
. . . . . . . . . . . . . . . . . 18
⊢ 𝑋 = ∪
𝐽 |
| 20 | 19 | elqtop2 21504 |
. . . . . . . . . . . . . . . . 17
⊢ ((𝐽 ∈ TopBases ∧ 𝐹:𝑋–onto→𝑌) → (𝑧 ∈ (𝐽 qTop 𝐹) ↔ (𝑧 ⊆ 𝑌 ∧ (◡𝐹 “ 𝑧) ∈ 𝐽))) |
| 21 | 7, 20 | sylan2 491 |
. . . . . . . . . . . . . . . 16
⊢ ((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) → (𝑧 ∈ (𝐽 qTop 𝐹) ↔ (𝑧 ⊆ 𝑌 ∧ (◡𝐹 “ 𝑧) ∈ 𝐽))) |
| 22 | 21 | ad3antrrr 766 |
. . . . . . . . . . . . . . 15
⊢
(((((𝐽 ∈
TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) ∧ (𝑧 ∈ ((𝐽 qTop 𝐹) ∩ 𝒫 𝑥) ∧ 𝑦 ∈ 𝑧)) → (𝑧 ∈ (𝐽 qTop 𝐹) ↔ (𝑧 ⊆ 𝑌 ∧ (◡𝐹 “ 𝑧) ∈ 𝐽))) |
| 23 | 18, 22 | mpbid 222 |
. . . . . . . . . . . . . 14
⊢
(((((𝐽 ∈
TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) ∧ (𝑧 ∈ ((𝐽 qTop 𝐹) ∩ 𝒫 𝑥) ∧ 𝑦 ∈ 𝑧)) → (𝑧 ⊆ 𝑌 ∧ (◡𝐹 “ 𝑧) ∈ 𝐽)) |
| 24 | 23 | simprd 479 |
. . . . . . . . . . . . 13
⊢
(((((𝐽 ∈
TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) ∧ (𝑧 ∈ ((𝐽 qTop 𝐹) ∩ 𝒫 𝑥) ∧ 𝑦 ∈ 𝑧)) → (◡𝐹 “ 𝑧) ∈ 𝐽) |
| 25 | | inss2 3834 |
. . . . . . . . . . . . . . . . 17
⊢ ((𝐽 qTop 𝐹) ∩ 𝒫 𝑥) ⊆ 𝒫 𝑥 |
| 26 | 25, 17 | sseldi 3601 |
. . . . . . . . . . . . . . . 16
⊢
(((((𝐽 ∈
TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) ∧ (𝑧 ∈ ((𝐽 qTop 𝐹) ∩ 𝒫 𝑥) ∧ 𝑦 ∈ 𝑧)) → 𝑧 ∈ 𝒫 𝑥) |
| 27 | 26 | elpwid 4170 |
. . . . . . . . . . . . . . 15
⊢
(((((𝐽 ∈
TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) ∧ (𝑧 ∈ ((𝐽 qTop 𝐹) ∩ 𝒫 𝑥) ∧ 𝑦 ∈ 𝑧)) → 𝑧 ⊆ 𝑥) |
| 28 | | imass2 5501 |
. . . . . . . . . . . . . . 15
⊢ (𝑧 ⊆ 𝑥 → (◡𝐹 “ 𝑧) ⊆ (◡𝐹 “ 𝑥)) |
| 29 | 27, 28 | syl 17 |
. . . . . . . . . . . . . 14
⊢
(((((𝐽 ∈
TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) ∧ (𝑧 ∈ ((𝐽 qTop 𝐹) ∩ 𝒫 𝑥) ∧ 𝑦 ∈ 𝑧)) → (◡𝐹 “ 𝑧) ⊆ (◡𝐹 “ 𝑥)) |
| 30 | | elpwg 4166 |
. . . . . . . . . . . . . . 15
⊢ ((◡𝐹 “ 𝑧) ∈ 𝐽 → ((◡𝐹 “ 𝑧) ∈ 𝒫 (◡𝐹 “ 𝑥) ↔ (◡𝐹 “ 𝑧) ⊆ (◡𝐹 “ 𝑥))) |
| 31 | 24, 30 | syl 17 |
. . . . . . . . . . . . . 14
⊢
(((((𝐽 ∈
TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) ∧ (𝑧 ∈ ((𝐽 qTop 𝐹) ∩ 𝒫 𝑥) ∧ 𝑦 ∈ 𝑧)) → ((◡𝐹 “ 𝑧) ∈ 𝒫 (◡𝐹 “ 𝑥) ↔ (◡𝐹 “ 𝑧) ⊆ (◡𝐹 “ 𝑥))) |
| 32 | 29, 31 | mpbird 247 |
. . . . . . . . . . . . 13
⊢
(((((𝐽 ∈
TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) ∧ (𝑧 ∈ ((𝐽 qTop 𝐹) ∩ 𝒫 𝑥) ∧ 𝑦 ∈ 𝑧)) → (◡𝐹 “ 𝑧) ∈ 𝒫 (◡𝐹 “ 𝑥)) |
| 33 | 24, 32 | elind 3798 |
. . . . . . . . . . . 12
⊢
(((((𝐽 ∈
TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) ∧ (𝑧 ∈ ((𝐽 qTop 𝐹) ∩ 𝒫 𝑥) ∧ 𝑦 ∈ 𝑧)) → (◡𝐹 “ 𝑧) ∈ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥))) |
| 34 | | simp-4r 807 |
. . . . . . . . . . . . . . 15
⊢
(((((𝐽 ∈
TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) ∧ (𝑧 ∈ ((𝐽 qTop 𝐹) ∩ 𝒫 𝑥) ∧ 𝑦 ∈ 𝑧)) → 𝐹:𝑋–1-1-onto→𝑌) |
| 35 | 34, 1 | syl 17 |
. . . . . . . . . . . . . 14
⊢
(((((𝐽 ∈
TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) ∧ (𝑧 ∈ ((𝐽 qTop 𝐹) ∩ 𝒫 𝑥) ∧ 𝑦 ∈ 𝑧)) → ◡𝐹:𝑌–1-1-onto→𝑋) |
| 36 | | f1ofn 6138 |
. . . . . . . . . . . . . 14
⊢ (◡𝐹:𝑌–1-1-onto→𝑋 → ◡𝐹 Fn 𝑌) |
| 37 | 35, 36 | syl 17 |
. . . . . . . . . . . . 13
⊢
(((((𝐽 ∈
TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) ∧ (𝑧 ∈ ((𝐽 qTop 𝐹) ∩ 𝒫 𝑥) ∧ 𝑦 ∈ 𝑧)) → ◡𝐹 Fn 𝑌) |
| 38 | 5 | ad2antrr 762 |
. . . . . . . . . . . . . 14
⊢
(((((𝐽 ∈
TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) ∧ (𝑧 ∈ ((𝐽 qTop 𝐹) ∩ 𝒫 𝑥) ∧ 𝑦 ∈ 𝑧)) → 𝑥 ⊆ 𝑌) |
| 39 | 27, 38 | sstrd 3613 |
. . . . . . . . . . . . 13
⊢
(((((𝐽 ∈
TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) ∧ (𝑧 ∈ ((𝐽 qTop 𝐹) ∩ 𝒫 𝑥) ∧ 𝑦 ∈ 𝑧)) → 𝑧 ⊆ 𝑌) |
| 40 | | simprr 796 |
. . . . . . . . . . . . 13
⊢
(((((𝐽 ∈
TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) ∧ (𝑧 ∈ ((𝐽 qTop 𝐹) ∩ 𝒫 𝑥) ∧ 𝑦 ∈ 𝑧)) → 𝑦 ∈ 𝑧) |
| 41 | | fnfvima 6496 |
. . . . . . . . . . . . 13
⊢ ((◡𝐹 Fn 𝑌 ∧ 𝑧 ⊆ 𝑌 ∧ 𝑦 ∈ 𝑧) → (◡𝐹‘𝑦) ∈ (◡𝐹 “ 𝑧)) |
| 42 | 37, 39, 40, 41 | syl3anc 1326 |
. . . . . . . . . . . 12
⊢
(((((𝐽 ∈
TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) ∧ (𝑧 ∈ ((𝐽 qTop 𝐹) ∩ 𝒫 𝑥) ∧ 𝑦 ∈ 𝑧)) → (◡𝐹‘𝑦) ∈ (◡𝐹 “ 𝑧)) |
| 43 | | eleq2 2690 |
. . . . . . . . . . . . 13
⊢ (𝑤 = (◡𝐹 “ 𝑧) → ((◡𝐹‘𝑦) ∈ 𝑤 ↔ (◡𝐹‘𝑦) ∈ (◡𝐹 “ 𝑧))) |
| 44 | 43 | rspcev 3309 |
. . . . . . . . . . . 12
⊢ (((◡𝐹 “ 𝑧) ∈ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥)) ∧ (◡𝐹‘𝑦) ∈ (◡𝐹 “ 𝑧)) → ∃𝑤 ∈ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥))(◡𝐹‘𝑦) ∈ 𝑤) |
| 45 | 33, 42, 44 | syl2anc 693 |
. . . . . . . . . . 11
⊢
(((((𝐽 ∈
TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) ∧ (𝑧 ∈ ((𝐽 qTop 𝐹) ∩ 𝒫 𝑥) ∧ 𝑦 ∈ 𝑧)) → ∃𝑤 ∈ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥))(◡𝐹‘𝑦) ∈ 𝑤) |
| 46 | 45 | rexlimdvaa 3032 |
. . . . . . . . . 10
⊢ ((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) → (∃𝑧 ∈ ((𝐽 qTop 𝐹) ∩ 𝒫 𝑥)𝑦 ∈ 𝑧 → ∃𝑤 ∈ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥))(◡𝐹‘𝑦) ∈ 𝑤)) |
| 47 | | simp-4r 807 |
. . . . . . . . . . . . . . . . 17
⊢
(((((𝐽 ∈
TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) ∧ (𝑤 ∈ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥)) ∧ (◡𝐹‘𝑦) ∈ 𝑤)) → 𝐹:𝑋–1-1-onto→𝑌) |
| 48 | | f1ofun 6139 |
. . . . . . . . . . . . . . . . 17
⊢ (𝐹:𝑋–1-1-onto→𝑌 → Fun 𝐹) |
| 49 | 47, 48 | syl 17 |
. . . . . . . . . . . . . . . 16
⊢
(((((𝐽 ∈
TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) ∧ (𝑤 ∈ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥)) ∧ (◡𝐹‘𝑦) ∈ 𝑤)) → Fun 𝐹) |
| 50 | | inss2 3834 |
. . . . . . . . . . . . . . . . . 18
⊢ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥)) ⊆ 𝒫 (◡𝐹 “ 𝑥) |
| 51 | | simprl 794 |
. . . . . . . . . . . . . . . . . 18
⊢
(((((𝐽 ∈
TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) ∧ (𝑤 ∈ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥)) ∧ (◡𝐹‘𝑦) ∈ 𝑤)) → 𝑤 ∈ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥))) |
| 52 | 50, 51 | sseldi 3601 |
. . . . . . . . . . . . . . . . 17
⊢
(((((𝐽 ∈
TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) ∧ (𝑤 ∈ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥)) ∧ (◡𝐹‘𝑦) ∈ 𝑤)) → 𝑤 ∈ 𝒫 (◡𝐹 “ 𝑥)) |
| 53 | 52 | elpwid 4170 |
. . . . . . . . . . . . . . . 16
⊢
(((((𝐽 ∈
TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) ∧ (𝑤 ∈ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥)) ∧ (◡𝐹‘𝑦) ∈ 𝑤)) → 𝑤 ⊆ (◡𝐹 “ 𝑥)) |
| 54 | | funimass2 5972 |
. . . . . . . . . . . . . . . 16
⊢ ((Fun
𝐹 ∧ 𝑤 ⊆ (◡𝐹 “ 𝑥)) → (𝐹 “ 𝑤) ⊆ 𝑥) |
| 55 | 49, 53, 54 | syl2anc 693 |
. . . . . . . . . . . . . . 15
⊢
(((((𝐽 ∈
TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) ∧ (𝑤 ∈ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥)) ∧ (◡𝐹‘𝑦) ∈ 𝑤)) → (𝐹 “ 𝑤) ⊆ 𝑥) |
| 56 | 5 | ad2antrr 762 |
. . . . . . . . . . . . . . 15
⊢
(((((𝐽 ∈
TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) ∧ (𝑤 ∈ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥)) ∧ (◡𝐹‘𝑦) ∈ 𝑤)) → 𝑥 ⊆ 𝑌) |
| 57 | 55, 56 | sstrd 3613 |
. . . . . . . . . . . . . 14
⊢
(((((𝐽 ∈
TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) ∧ (𝑤 ∈ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥)) ∧ (◡𝐹‘𝑦) ∈ 𝑤)) → (𝐹 “ 𝑤) ⊆ 𝑌) |
| 58 | | f1of1 6136 |
. . . . . . . . . . . . . . . . 17
⊢ (𝐹:𝑋–1-1-onto→𝑌 → 𝐹:𝑋–1-1→𝑌) |
| 59 | 47, 58 | syl 17 |
. . . . . . . . . . . . . . . 16
⊢
(((((𝐽 ∈
TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) ∧ (𝑤 ∈ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥)) ∧ (◡𝐹‘𝑦) ∈ 𝑤)) → 𝐹:𝑋–1-1→𝑌) |
| 60 | | inss1 3833 |
. . . . . . . . . . . . . . . . . 18
⊢ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥)) ⊆ 𝐽 |
| 61 | 60, 51 | sseldi 3601 |
. . . . . . . . . . . . . . . . 17
⊢
(((((𝐽 ∈
TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) ∧ (𝑤 ∈ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥)) ∧ (◡𝐹‘𝑦) ∈ 𝑤)) → 𝑤 ∈ 𝐽) |
| 62 | | elssuni 4467 |
. . . . . . . . . . . . . . . . . 18
⊢ (𝑤 ∈ 𝐽 → 𝑤 ⊆ ∪ 𝐽) |
| 63 | 62, 19 | syl6sseqr 3652 |
. . . . . . . . . . . . . . . . 17
⊢ (𝑤 ∈ 𝐽 → 𝑤 ⊆ 𝑋) |
| 64 | 61, 63 | syl 17 |
. . . . . . . . . . . . . . . 16
⊢
(((((𝐽 ∈
TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) ∧ (𝑤 ∈ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥)) ∧ (◡𝐹‘𝑦) ∈ 𝑤)) → 𝑤 ⊆ 𝑋) |
| 65 | | f1imacnv 6153 |
. . . . . . . . . . . . . . . 16
⊢ ((𝐹:𝑋–1-1→𝑌 ∧ 𝑤 ⊆ 𝑋) → (◡𝐹 “ (𝐹 “ 𝑤)) = 𝑤) |
| 66 | 59, 64, 65 | syl2anc 693 |
. . . . . . . . . . . . . . 15
⊢
(((((𝐽 ∈
TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) ∧ (𝑤 ∈ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥)) ∧ (◡𝐹‘𝑦) ∈ 𝑤)) → (◡𝐹 “ (𝐹 “ 𝑤)) = 𝑤) |
| 67 | 66, 61 | eqeltrd 2701 |
. . . . . . . . . . . . . 14
⊢
(((((𝐽 ∈
TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) ∧ (𝑤 ∈ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥)) ∧ (◡𝐹‘𝑦) ∈ 𝑤)) → (◡𝐹 “ (𝐹 “ 𝑤)) ∈ 𝐽) |
| 68 | 19 | elqtop2 21504 |
. . . . . . . . . . . . . . . 16
⊢ ((𝐽 ∈ TopBases ∧ 𝐹:𝑋–onto→𝑌) → ((𝐹 “ 𝑤) ∈ (𝐽 qTop 𝐹) ↔ ((𝐹 “ 𝑤) ⊆ 𝑌 ∧ (◡𝐹 “ (𝐹 “ 𝑤)) ∈ 𝐽))) |
| 69 | 7, 68 | sylan2 491 |
. . . . . . . . . . . . . . 15
⊢ ((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) → ((𝐹 “ 𝑤) ∈ (𝐽 qTop 𝐹) ↔ ((𝐹 “ 𝑤) ⊆ 𝑌 ∧ (◡𝐹 “ (𝐹 “ 𝑤)) ∈ 𝐽))) |
| 70 | 69 | ad3antrrr 766 |
. . . . . . . . . . . . . 14
⊢
(((((𝐽 ∈
TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) ∧ (𝑤 ∈ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥)) ∧ (◡𝐹‘𝑦) ∈ 𝑤)) → ((𝐹 “ 𝑤) ∈ (𝐽 qTop 𝐹) ↔ ((𝐹 “ 𝑤) ⊆ 𝑌 ∧ (◡𝐹 “ (𝐹 “ 𝑤)) ∈ 𝐽))) |
| 71 | 57, 67, 70 | mpbir2and 957 |
. . . . . . . . . . . . 13
⊢
(((((𝐽 ∈
TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) ∧ (𝑤 ∈ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥)) ∧ (◡𝐹‘𝑦) ∈ 𝑤)) → (𝐹 “ 𝑤) ∈ (𝐽 qTop 𝐹)) |
| 72 | | vex 3203 |
. . . . . . . . . . . . . . 15
⊢ 𝑥 ∈ V |
| 73 | 72 | elpw2 4828 |
. . . . . . . . . . . . . 14
⊢ ((𝐹 “ 𝑤) ∈ 𝒫 𝑥 ↔ (𝐹 “ 𝑤) ⊆ 𝑥) |
| 74 | 55, 73 | sylibr 224 |
. . . . . . . . . . . . 13
⊢
(((((𝐽 ∈
TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) ∧ (𝑤 ∈ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥)) ∧ (◡𝐹‘𝑦) ∈ 𝑤)) → (𝐹 “ 𝑤) ∈ 𝒫 𝑥) |
| 75 | 71, 74 | elind 3798 |
. . . . . . . . . . . 12
⊢
(((((𝐽 ∈
TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) ∧ (𝑤 ∈ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥)) ∧ (◡𝐹‘𝑦) ∈ 𝑤)) → (𝐹 “ 𝑤) ∈ ((𝐽 qTop 𝐹) ∩ 𝒫 𝑥)) |
| 76 | 5 | sselda 3603 |
. . . . . . . . . . . . . . 15
⊢ ((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) → 𝑦 ∈ 𝑌) |
| 77 | 76 | adantr 481 |
. . . . . . . . . . . . . 14
⊢
(((((𝐽 ∈
TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) ∧ (𝑤 ∈ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥)) ∧ (◡𝐹‘𝑦) ∈ 𝑤)) → 𝑦 ∈ 𝑌) |
| 78 | | f1ocnvfv2 6533 |
. . . . . . . . . . . . . 14
⊢ ((𝐹:𝑋–1-1-onto→𝑌 ∧ 𝑦 ∈ 𝑌) → (𝐹‘(◡𝐹‘𝑦)) = 𝑦) |
| 79 | 47, 77, 78 | syl2anc 693 |
. . . . . . . . . . . . 13
⊢
(((((𝐽 ∈
TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) ∧ (𝑤 ∈ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥)) ∧ (◡𝐹‘𝑦) ∈ 𝑤)) → (𝐹‘(◡𝐹‘𝑦)) = 𝑦) |
| 80 | | f1ofn 6138 |
. . . . . . . . . . . . . . . 16
⊢ (𝐹:𝑋–1-1-onto→𝑌 → 𝐹 Fn 𝑋) |
| 81 | 80 | adantl 482 |
. . . . . . . . . . . . . . 15
⊢ ((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) → 𝐹 Fn 𝑋) |
| 82 | 81 | ad3antrrr 766 |
. . . . . . . . . . . . . 14
⊢
(((((𝐽 ∈
TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) ∧ (𝑤 ∈ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥)) ∧ (◡𝐹‘𝑦) ∈ 𝑤)) → 𝐹 Fn 𝑋) |
| 83 | | simprr 796 |
. . . . . . . . . . . . . 14
⊢
(((((𝐽 ∈
TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) ∧ (𝑤 ∈ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥)) ∧ (◡𝐹‘𝑦) ∈ 𝑤)) → (◡𝐹‘𝑦) ∈ 𝑤) |
| 84 | | fnfvima 6496 |
. . . . . . . . . . . . . 14
⊢ ((𝐹 Fn 𝑋 ∧ 𝑤 ⊆ 𝑋 ∧ (◡𝐹‘𝑦) ∈ 𝑤) → (𝐹‘(◡𝐹‘𝑦)) ∈ (𝐹 “ 𝑤)) |
| 85 | 82, 64, 83, 84 | syl3anc 1326 |
. . . . . . . . . . . . 13
⊢
(((((𝐽 ∈
TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) ∧ (𝑤 ∈ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥)) ∧ (◡𝐹‘𝑦) ∈ 𝑤)) → (𝐹‘(◡𝐹‘𝑦)) ∈ (𝐹 “ 𝑤)) |
| 86 | 79, 85 | eqeltrrd 2702 |
. . . . . . . . . . . 12
⊢
(((((𝐽 ∈
TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) ∧ (𝑤 ∈ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥)) ∧ (◡𝐹‘𝑦) ∈ 𝑤)) → 𝑦 ∈ (𝐹 “ 𝑤)) |
| 87 | | eleq2 2690 |
. . . . . . . . . . . . 13
⊢ (𝑧 = (𝐹 “ 𝑤) → (𝑦 ∈ 𝑧 ↔ 𝑦 ∈ (𝐹 “ 𝑤))) |
| 88 | 87 | rspcev 3309 |
. . . . . . . . . . . 12
⊢ (((𝐹 “ 𝑤) ∈ ((𝐽 qTop 𝐹) ∩ 𝒫 𝑥) ∧ 𝑦 ∈ (𝐹 “ 𝑤)) → ∃𝑧 ∈ ((𝐽 qTop 𝐹) ∩ 𝒫 𝑥)𝑦 ∈ 𝑧) |
| 89 | 75, 86, 88 | syl2anc 693 |
. . . . . . . . . . 11
⊢
(((((𝐽 ∈
TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) ∧ (𝑤 ∈ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥)) ∧ (◡𝐹‘𝑦) ∈ 𝑤)) → ∃𝑧 ∈ ((𝐽 qTop 𝐹) ∩ 𝒫 𝑥)𝑦 ∈ 𝑧) |
| 90 | 89 | rexlimdvaa 3032 |
. . . . . . . . . 10
⊢ ((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) → (∃𝑤 ∈ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥))(◡𝐹‘𝑦) ∈ 𝑤 → ∃𝑧 ∈ ((𝐽 qTop 𝐹) ∩ 𝒫 𝑥)𝑦 ∈ 𝑧)) |
| 91 | 46, 90 | impbid 202 |
. . . . . . . . 9
⊢ ((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) → (∃𝑧 ∈ ((𝐽 qTop 𝐹) ∩ 𝒫 𝑥)𝑦 ∈ 𝑧 ↔ ∃𝑤 ∈ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥))(◡𝐹‘𝑦) ∈ 𝑤)) |
| 92 | | eluni2 4440 |
. . . . . . . . 9
⊢ (𝑦 ∈ ∪ ((𝐽
qTop 𝐹) ∩ 𝒫
𝑥) ↔ ∃𝑧 ∈ ((𝐽 qTop 𝐹) ∩ 𝒫 𝑥)𝑦 ∈ 𝑧) |
| 93 | | eluni2 4440 |
. . . . . . . . 9
⊢ ((◡𝐹‘𝑦) ∈ ∪ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥)) ↔ ∃𝑤 ∈ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥))(◡𝐹‘𝑦) ∈ 𝑤) |
| 94 | 91, 92, 93 | 3bitr4g 303 |
. . . . . . . 8
⊢ ((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) ∧ 𝑦 ∈ 𝑥) → (𝑦 ∈ ∪ ((𝐽 qTop 𝐹) ∩ 𝒫 𝑥) ↔ (◡𝐹‘𝑦) ∈ ∪ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥)))) |
| 95 | 94 | ralbidva 2985 |
. . . . . . 7
⊢ (((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) → (∀𝑦 ∈ 𝑥 𝑦 ∈ ∪ ((𝐽 qTop 𝐹) ∩ 𝒫 𝑥) ↔ ∀𝑦 ∈ 𝑥 (◡𝐹‘𝑦) ∈ ∪ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥)))) |
| 96 | 15, 95 | syl5bb 272 |
. . . . . 6
⊢ (((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) → (𝑥 ⊆ ∪ ((𝐽 qTop 𝐹) ∩ 𝒫 𝑥) ↔ ∀𝑦 ∈ 𝑥 (◡𝐹‘𝑦) ∈ ∪ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥)))) |
| 97 | 14, 96 | bitr4d 271 |
. . . . 5
⊢ (((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) → ((◡𝐹 “ 𝑥) ⊆ ∪ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥)) ↔ 𝑥 ⊆ ∪ ((𝐽 qTop 𝐹) ∩ 𝒫 𝑥))) |
| 98 | | eltg 20761 |
. . . . . 6
⊢ (𝐽 ∈ TopBases → ((◡𝐹 “ 𝑥) ∈ (topGen‘𝐽) ↔ (◡𝐹 “ 𝑥) ⊆ ∪ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥)))) |
| 99 | 98 | ad2antrr 762 |
. . . . 5
⊢ (((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) → ((◡𝐹 “ 𝑥) ∈ (topGen‘𝐽) ↔ (◡𝐹 “ 𝑥) ⊆ ∪ (𝐽 ∩ 𝒫 (◡𝐹 “ 𝑥)))) |
| 100 | | ovex 6678 |
. . . . . 6
⊢ (𝐽 qTop 𝐹) ∈ V |
| 101 | | eltg 20761 |
. . . . . 6
⊢ ((𝐽 qTop 𝐹) ∈ V → (𝑥 ∈ (topGen‘(𝐽 qTop 𝐹)) ↔ 𝑥 ⊆ ∪ ((𝐽 qTop 𝐹) ∩ 𝒫 𝑥))) |
| 102 | 100, 101 | mp1i 13 |
. . . . 5
⊢ (((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) → (𝑥 ∈ (topGen‘(𝐽 qTop 𝐹)) ↔ 𝑥 ⊆ ∪ ((𝐽 qTop 𝐹) ∩ 𝒫 𝑥))) |
| 103 | 97, 99, 102 | 3bitr4d 300 |
. . . 4
⊢ (((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ 𝑥 ⊆ 𝑌) → ((◡𝐹 “ 𝑥) ∈ (topGen‘𝐽) ↔ 𝑥 ∈ (topGen‘(𝐽 qTop 𝐹)))) |
| 104 | 103 | pm5.32da 673 |
. . 3
⊢ ((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) → ((𝑥 ⊆ 𝑌 ∧ (◡𝐹 “ 𝑥) ∈ (topGen‘𝐽)) ↔ (𝑥 ⊆ 𝑌 ∧ 𝑥 ∈ (topGen‘(𝐽 qTop 𝐹))))) |
| 105 | | tgtopon 20775 |
. . . . . 6
⊢ (𝐽 ∈ TopBases →
(topGen‘𝐽) ∈
(TopOn‘∪ 𝐽)) |
| 106 | 105 | adantr 481 |
. . . . 5
⊢ ((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) → (topGen‘𝐽) ∈ (TopOn‘∪ 𝐽)) |
| 107 | 19 | fveq2i 6194 |
. . . . 5
⊢
(TopOn‘𝑋) =
(TopOn‘∪ 𝐽) |
| 108 | 106, 107 | syl6eleqr 2712 |
. . . 4
⊢ ((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) → (topGen‘𝐽) ∈ (TopOn‘𝑋)) |
| 109 | 7 | adantl 482 |
. . . 4
⊢ ((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) → 𝐹:𝑋–onto→𝑌) |
| 110 | | elqtop3 21506 |
. . . 4
⊢
(((topGen‘𝐽)
∈ (TopOn‘𝑋)
∧ 𝐹:𝑋–onto→𝑌) → (𝑥 ∈ ((topGen‘𝐽) qTop 𝐹) ↔ (𝑥 ⊆ 𝑌 ∧ (◡𝐹 “ 𝑥) ∈ (topGen‘𝐽)))) |
| 111 | 108, 109,
110 | syl2anc 693 |
. . 3
⊢ ((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) → (𝑥 ∈ ((topGen‘𝐽) qTop 𝐹) ↔ (𝑥 ⊆ 𝑌 ∧ (◡𝐹 “ 𝑥) ∈ (topGen‘𝐽)))) |
| 112 | | unitg 20771 |
. . . . . . . . 9
⊢ ((𝐽 qTop 𝐹) ∈ V → ∪ (topGen‘(𝐽 qTop 𝐹)) = ∪ (𝐽 qTop 𝐹)) |
| 113 | 100, 112 | ax-mp 5 |
. . . . . . . 8
⊢ ∪ (topGen‘(𝐽 qTop 𝐹)) = ∪ (𝐽 qTop 𝐹) |
| 114 | 19 | elqtop2 21504 |
. . . . . . . . . . . 12
⊢ ((𝐽 ∈ TopBases ∧ 𝐹:𝑋–onto→𝑌) → (𝑥 ∈ (𝐽 qTop 𝐹) ↔ (𝑥 ⊆ 𝑌 ∧ (◡𝐹 “ 𝑥) ∈ 𝐽))) |
| 115 | 7, 114 | sylan2 491 |
. . . . . . . . . . 11
⊢ ((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) → (𝑥 ∈ (𝐽 qTop 𝐹) ↔ (𝑥 ⊆ 𝑌 ∧ (◡𝐹 “ 𝑥) ∈ 𝐽))) |
| 116 | | simpl 473 |
. . . . . . . . . . . 12
⊢ ((𝑥 ⊆ 𝑌 ∧ (◡𝐹 “ 𝑥) ∈ 𝐽) → 𝑥 ⊆ 𝑌) |
| 117 | | selpw 4165 |
. . . . . . . . . . . 12
⊢ (𝑥 ∈ 𝒫 𝑌 ↔ 𝑥 ⊆ 𝑌) |
| 118 | 116, 117 | sylibr 224 |
. . . . . . . . . . 11
⊢ ((𝑥 ⊆ 𝑌 ∧ (◡𝐹 “ 𝑥) ∈ 𝐽) → 𝑥 ∈ 𝒫 𝑌) |
| 119 | 115, 118 | syl6bi 243 |
. . . . . . . . . 10
⊢ ((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) → (𝑥 ∈ (𝐽 qTop 𝐹) → 𝑥 ∈ 𝒫 𝑌)) |
| 120 | 119 | ssrdv 3609 |
. . . . . . . . 9
⊢ ((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) → (𝐽 qTop 𝐹) ⊆ 𝒫 𝑌) |
| 121 | | sspwuni 4611 |
. . . . . . . . 9
⊢ ((𝐽 qTop 𝐹) ⊆ 𝒫 𝑌 ↔ ∪ (𝐽 qTop 𝐹) ⊆ 𝑌) |
| 122 | 120, 121 | sylib 208 |
. . . . . . . 8
⊢ ((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) → ∪ (𝐽
qTop 𝐹) ⊆ 𝑌) |
| 123 | 113, 122 | syl5eqss 3649 |
. . . . . . 7
⊢ ((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) → ∪ (topGen‘(𝐽 qTop 𝐹)) ⊆ 𝑌) |
| 124 | | sspwuni 4611 |
. . . . . . 7
⊢
((topGen‘(𝐽
qTop 𝐹)) ⊆ 𝒫
𝑌 ↔ ∪ (topGen‘(𝐽 qTop 𝐹)) ⊆ 𝑌) |
| 125 | 123, 124 | sylibr 224 |
. . . . . 6
⊢ ((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) → (topGen‘(𝐽 qTop 𝐹)) ⊆ 𝒫 𝑌) |
| 126 | 125 | sseld 3602 |
. . . . 5
⊢ ((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) → (𝑥 ∈ (topGen‘(𝐽 qTop 𝐹)) → 𝑥 ∈ 𝒫 𝑌)) |
| 127 | 126, 117 | syl6ib 241 |
. . . 4
⊢ ((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) → (𝑥 ∈ (topGen‘(𝐽 qTop 𝐹)) → 𝑥 ⊆ 𝑌)) |
| 128 | 127 | pm4.71rd 667 |
. . 3
⊢ ((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) → (𝑥 ∈ (topGen‘(𝐽 qTop 𝐹)) ↔ (𝑥 ⊆ 𝑌 ∧ 𝑥 ∈ (topGen‘(𝐽 qTop 𝐹))))) |
| 129 | 104, 111,
128 | 3bitr4d 300 |
. 2
⊢ ((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) → (𝑥 ∈ ((topGen‘𝐽) qTop 𝐹) ↔ 𝑥 ∈ (topGen‘(𝐽 qTop 𝐹)))) |
| 130 | 129 | eqrdv 2620 |
1
⊢ ((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) → ((topGen‘𝐽) qTop 𝐹) = (topGen‘(𝐽 qTop 𝐹))) |