Theorem uniioombl 23357

Description: A disjoint union of open intervals is measurable. (This proof does not use countable choice, unlike iunmbl 23321.) Lemma 565Ca of [Fremlin5] p. 214. (Contributed by Mario Carneiro, 26-Mar-2015.)

Hypotheses

Ref	Expression
uniioombl.1	⊢ (𝜑 → 𝐹:ℕ⟶( ≤ ∩ (ℝ × ℝ)))
uniioombl.2	⊢ (𝜑 → Disj 𝑥 ∈ ℕ ((,)‘(𝐹‘𝑥)))
uniioombl.3	⊢ 𝑆 = seq1( + , ((abs ∘ − ) ∘ 𝐹))

Assertion

Ref	Expression
uniioombl	⊢ (𝜑 → ∪ ran ((,) ∘ 𝐹) ∈ dom vol)

Distinct variable groups:   𝑥,𝐹   𝜑,𝑥

Allowed substitution hint:   𝑆(𝑥)

Proof of Theorem uniioombl

Dummy variables 𝑓 𝑟 𝑧 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		ioof 12271	. . . . 5 ⊢ (,):(ℝ* × ℝ*)⟶𝒫 ℝ
2		uniioombl.1	. . . . . 6 ⊢ (𝜑 → 𝐹:ℕ⟶( ≤ ∩ (ℝ × ℝ)))
3		inss2 3834	. . . . . . 7 ⊢ ( ≤ ∩ (ℝ × ℝ)) ⊆ (ℝ × ℝ)
4		rexpssxrxp 10084	. . . . . . 7 ⊢ (ℝ × ℝ) ⊆ (ℝ* × ℝ*)
5	3, 4	sstri 3612	. . . . . 6 ⊢ ( ≤ ∩ (ℝ × ℝ)) ⊆ (ℝ* × ℝ*)
6		fss 6056	. . . . . 6 ⊢ ((𝐹:ℕ⟶( ≤ ∩ (ℝ × ℝ)) ∧ ( ≤ ∩ (ℝ × ℝ)) ⊆ (ℝ* × ℝ*)) → 𝐹:ℕ⟶(ℝ* × ℝ*))
7	2, 5, 6	sylancl 694	. . . . 5 ⊢ (𝜑 → 𝐹:ℕ⟶(ℝ* × ℝ*))
8		fco 6058	. . . . 5 ⊢ (((,):(ℝ* × ℝ*)⟶𝒫 ℝ ∧ 𝐹:ℕ⟶(ℝ* × ℝ*)) → ((,) ∘ 𝐹):ℕ⟶𝒫 ℝ)
9	1, 7, 8	sylancr 695	. . . 4 ⊢ (𝜑 → ((,) ∘ 𝐹):ℕ⟶𝒫 ℝ)
10		frn 6053	. . . 4 ⊢ (((,) ∘ 𝐹):ℕ⟶𝒫 ℝ → ran ((,) ∘ 𝐹) ⊆ 𝒫 ℝ)
11	9, 10	syl 17	. . 3 ⊢ (𝜑 → ran ((,) ∘ 𝐹) ⊆ 𝒫 ℝ)
12		sspwuni 4611	. . 3 ⊢ (ran ((,) ∘ 𝐹) ⊆ 𝒫 ℝ ↔ ∪ ran ((,) ∘ 𝐹) ⊆ ℝ)
13	11, 12	sylib 208	. 2 ⊢ (𝜑 → ∪ ran ((,) ∘ 𝐹) ⊆ ℝ)
14		elpwi 4168	. . . . . . . . . . 11 ⊢ (𝑧 ∈ 𝒫 ℝ → 𝑧 ⊆ ℝ)
15	14	ad2antrl 764	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) → 𝑧 ⊆ ℝ)
16	15	adantr 481	. . . . . . . . 9 ⊢ (((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) ∧ 𝑟 ∈ ℝ+) → 𝑧 ⊆ ℝ)
17		simprr 796	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) → (vol*‘𝑧) ∈ ℝ)
18	17	adantr 481	. . . . . . . . 9 ⊢ (((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) ∧ 𝑟 ∈ ℝ+) → (vol*‘𝑧) ∈ ℝ)
19		rphalfcl 11858	. . . . . . . . . . 11 ⊢ (𝑟 ∈ ℝ+ → (𝑟 / 2) ∈ ℝ+)
20	19	rphalfcld 11884	. . . . . . . . . 10 ⊢ (𝑟 ∈ ℝ+ → ((𝑟 / 2) / 2) ∈ ℝ+)
21	20	adantl 482	. . . . . . . . 9 ⊢ (((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) ∧ 𝑟 ∈ ℝ+) → ((𝑟 / 2) / 2) ∈ ℝ+)
22		eqid 2622	. . . . . . . . . 10 ⊢ seq1( + , ((abs ∘ − ) ∘ 𝑓)) = seq1( + , ((abs ∘ − ) ∘ 𝑓))
23	22	ovolgelb 23248	. . . . . . . . 9 ⊢ ((𝑧 ⊆ ℝ ∧ (vol*‘𝑧) ∈ ℝ ∧ ((𝑟 / 2) / 2) ∈ ℝ+) → ∃𝑓 ∈ (( ≤ ∩ (ℝ × ℝ)) ↑𝑚 ℕ)(𝑧 ⊆ ∪ ran ((,) ∘ 𝑓) ∧ sup(ran seq1( + , ((abs ∘ − ) ∘ 𝑓)), ℝ*, < ) ≤ ((vol*‘𝑧) + ((𝑟 / 2) / 2))))
24	16, 18, 21, 23	syl3anc 1326	. . . . . . . 8 ⊢ (((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) ∧ 𝑟 ∈ ℝ+) → ∃𝑓 ∈ (( ≤ ∩ (ℝ × ℝ)) ↑𝑚 ℕ)(𝑧 ⊆ ∪ ran ((,) ∘ 𝑓) ∧ sup(ran seq1( + , ((abs ∘ − ) ∘ 𝑓)), ℝ*, < ) ≤ ((vol*‘𝑧) + ((𝑟 / 2) / 2))))
25	2	ad3antrrr 766	. . . . . . . . 9 ⊢ ((((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) ∧ 𝑟 ∈ ℝ+) ∧ (𝑓 ∈ (( ≤ ∩ (ℝ × ℝ)) ↑𝑚 ℕ) ∧ (𝑧 ⊆ ∪ ran ((,) ∘ 𝑓) ∧ sup(ran seq1( + , ((abs ∘ − ) ∘ 𝑓)), ℝ*, < ) ≤ ((vol*‘𝑧) + ((𝑟 / 2) / 2))))) → 𝐹:ℕ⟶( ≤ ∩ (ℝ × ℝ)))
26		uniioombl.2	. . . . . . . . . 10 ⊢ (𝜑 → Disj 𝑥 ∈ ℕ ((,)‘(𝐹‘𝑥)))
27	26	ad3antrrr 766	. . . . . . . . 9 ⊢ ((((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) ∧ 𝑟 ∈ ℝ+) ∧ (𝑓 ∈ (( ≤ ∩ (ℝ × ℝ)) ↑𝑚 ℕ) ∧ (𝑧 ⊆ ∪ ran ((,) ∘ 𝑓) ∧ sup(ran seq1( + , ((abs ∘ − ) ∘ 𝑓)), ℝ*, < ) ≤ ((vol*‘𝑧) + ((𝑟 / 2) / 2))))) → Disj 𝑥 ∈ ℕ ((,)‘(𝐹‘𝑥)))
28		uniioombl.3	. . . . . . . . 9 ⊢ 𝑆 = seq1( + , ((abs ∘ − ) ∘ 𝐹))
29		eqid 2622	. . . . . . . . 9 ⊢ ∪ ran ((,) ∘ 𝐹) = ∪ ran ((,) ∘ 𝐹)
30	18	adantr 481	. . . . . . . . 9 ⊢ ((((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) ∧ 𝑟 ∈ ℝ+) ∧ (𝑓 ∈ (( ≤ ∩ (ℝ × ℝ)) ↑𝑚 ℕ) ∧ (𝑧 ⊆ ∪ ran ((,) ∘ 𝑓) ∧ sup(ran seq1( + , ((abs ∘ − ) ∘ 𝑓)), ℝ*, < ) ≤ ((vol*‘𝑧) + ((𝑟 / 2) / 2))))) → (vol*‘𝑧) ∈ ℝ)
31	19	adantl 482	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) ∧ 𝑟 ∈ ℝ+) → (𝑟 / 2) ∈ ℝ+)
32	31	adantr 481	. . . . . . . . . 10 ⊢ ((((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) ∧ 𝑟 ∈ ℝ+) ∧ (𝑓 ∈ (( ≤ ∩ (ℝ × ℝ)) ↑𝑚 ℕ) ∧ (𝑧 ⊆ ∪ ran ((,) ∘ 𝑓) ∧ sup(ran seq1( + , ((abs ∘ − ) ∘ 𝑓)), ℝ*, < ) ≤ ((vol*‘𝑧) + ((𝑟 / 2) / 2))))) → (𝑟 / 2) ∈ ℝ+)
33	32	rphalfcld 11884	. . . . . . . . 9 ⊢ ((((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) ∧ 𝑟 ∈ ℝ+) ∧ (𝑓 ∈ (( ≤ ∩ (ℝ × ℝ)) ↑𝑚 ℕ) ∧ (𝑧 ⊆ ∪ ran ((,) ∘ 𝑓) ∧ sup(ran seq1( + , ((abs ∘ − ) ∘ 𝑓)), ℝ*, < ) ≤ ((vol*‘𝑧) + ((𝑟 / 2) / 2))))) → ((𝑟 / 2) / 2) ∈ ℝ+)
34		elmapi 7879	. . . . . . . . . 10 ⊢ (𝑓 ∈ (( ≤ ∩ (ℝ × ℝ)) ↑𝑚 ℕ) → 𝑓:ℕ⟶( ≤ ∩ (ℝ × ℝ)))
35	34	ad2antrl 764	. . . . . . . . 9 ⊢ ((((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) ∧ 𝑟 ∈ ℝ+) ∧ (𝑓 ∈ (( ≤ ∩ (ℝ × ℝ)) ↑𝑚 ℕ) ∧ (𝑧 ⊆ ∪ ran ((,) ∘ 𝑓) ∧ sup(ran seq1( + , ((abs ∘ − ) ∘ 𝑓)), ℝ*, < ) ≤ ((vol*‘𝑧) + ((𝑟 / 2) / 2))))) → 𝑓:ℕ⟶( ≤ ∩ (ℝ × ℝ)))
36		simprrl 804	. . . . . . . . 9 ⊢ ((((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) ∧ 𝑟 ∈ ℝ+) ∧ (𝑓 ∈ (( ≤ ∩ (ℝ × ℝ)) ↑𝑚 ℕ) ∧ (𝑧 ⊆ ∪ ran ((,) ∘ 𝑓) ∧ sup(ran seq1( + , ((abs ∘ − ) ∘ 𝑓)), ℝ*, < ) ≤ ((vol*‘𝑧) + ((𝑟 / 2) / 2))))) → 𝑧 ⊆ ∪ ran ((,) ∘ 𝑓))
37		simprrr 805	. . . . . . . . 9 ⊢ ((((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) ∧ 𝑟 ∈ ℝ+) ∧ (𝑓 ∈ (( ≤ ∩ (ℝ × ℝ)) ↑𝑚 ℕ) ∧ (𝑧 ⊆ ∪ ran ((,) ∘ 𝑓) ∧ sup(ran seq1( + , ((abs ∘ − ) ∘ 𝑓)), ℝ*, < ) ≤ ((vol*‘𝑧) + ((𝑟 / 2) / 2))))) → sup(ran seq1( + , ((abs ∘ − ) ∘ 𝑓)), ℝ*, < ) ≤ ((vol*‘𝑧) + ((𝑟 / 2) / 2)))
38	25, 27, 28, 29, 30, 33, 35, 36, 22, 37	uniioombllem6 23356	. . . . . . . 8 ⊢ ((((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) ∧ 𝑟 ∈ ℝ+) ∧ (𝑓 ∈ (( ≤ ∩ (ℝ × ℝ)) ↑𝑚 ℕ) ∧ (𝑧 ⊆ ∪ ran ((,) ∘ 𝑓) ∧ sup(ran seq1( + , ((abs ∘ − ) ∘ 𝑓)), ℝ*, < ) ≤ ((vol*‘𝑧) + ((𝑟 / 2) / 2))))) → ((vol*‘(𝑧 ∩ ∪ ran ((,) ∘ 𝐹))) + (vol*‘(𝑧 ∖ ∪ ran ((,) ∘ 𝐹)))) ≤ ((vol*‘𝑧) + (4 · ((𝑟 / 2) / 2))))
39	24, 38	rexlimddv 3035	. . . . . . 7 ⊢ (((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) ∧ 𝑟 ∈ ℝ+) → ((vol*‘(𝑧 ∩ ∪ ran ((,) ∘ 𝐹))) + (vol*‘(𝑧 ∖ ∪ ran ((,) ∘ 𝐹)))) ≤ ((vol*‘𝑧) + (4 · ((𝑟 / 2) / 2))))
40		rpcn 11841	. . . . . . . . . . . . 13 ⊢ (𝑟 ∈ ℝ+ → 𝑟 ∈ ℂ)
41	40	adantl 482	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) ∧ 𝑟 ∈ ℝ+) → 𝑟 ∈ ℂ)
42		2cnd 11093	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) ∧ 𝑟 ∈ ℝ+) → 2 ∈ ℂ)
43		2ne0 11113	. . . . . . . . . . . . 13 ⊢ 2 ≠ 0
44	43	a1i 11	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) ∧ 𝑟 ∈ ℝ+) → 2 ≠ 0)
45	41, 42, 42, 44, 44	divdiv1d 10832	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) ∧ 𝑟 ∈ ℝ+) → ((𝑟 / 2) / 2) = (𝑟 / (2 · 2)))
46		2t2e4 11177	. . . . . . . . . . . 12 ⊢ (2 · 2) = 4
47	46	oveq2i 6661	. . . . . . . . . . 11 ⊢ (𝑟 / (2 · 2)) = (𝑟 / 4)
48	45, 47	syl6eq 2672	. . . . . . . . . 10 ⊢ (((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) ∧ 𝑟 ∈ ℝ+) → ((𝑟 / 2) / 2) = (𝑟 / 4))
49	48	oveq2d 6666	. . . . . . . . 9 ⊢ (((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) ∧ 𝑟 ∈ ℝ+) → (4 · ((𝑟 / 2) / 2)) = (4 · (𝑟 / 4)))
50		4cn 11098	. . . . . . . . . . 11 ⊢ 4 ∈ ℂ
51	50	a1i 11	. . . . . . . . . 10 ⊢ (((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) ∧ 𝑟 ∈ ℝ+) → 4 ∈ ℂ)
52		4ne0 11117	. . . . . . . . . . 11 ⊢ 4 ≠ 0
53	52	a1i 11	. . . . . . . . . 10 ⊢ (((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) ∧ 𝑟 ∈ ℝ+) → 4 ≠ 0)
54	41, 51, 53	divcan2d 10803	. . . . . . . . 9 ⊢ (((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) ∧ 𝑟 ∈ ℝ+) → (4 · (𝑟 / 4)) = 𝑟)
55	49, 54	eqtrd 2656	. . . . . . . 8 ⊢ (((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) ∧ 𝑟 ∈ ℝ+) → (4 · ((𝑟 / 2) / 2)) = 𝑟)
56	55	oveq2d 6666	. . . . . . 7 ⊢ (((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) ∧ 𝑟 ∈ ℝ+) → ((vol*‘𝑧) + (4 · ((𝑟 / 2) / 2))) = ((vol*‘𝑧) + 𝑟))
57	39, 56	breqtrd 4679	. . . . . 6 ⊢ (((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) ∧ 𝑟 ∈ ℝ+) → ((vol*‘(𝑧 ∩ ∪ ran ((,) ∘ 𝐹))) + (vol*‘(𝑧 ∖ ∪ ran ((,) ∘ 𝐹)))) ≤ ((vol*‘𝑧) + 𝑟))
58	57	ralrimiva 2966	. . . . 5 ⊢ ((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) → ∀𝑟 ∈ ℝ+ ((vol*‘(𝑧 ∩ ∪ ran ((,) ∘ 𝐹))) + (vol*‘(𝑧 ∖ ∪ ran ((,) ∘ 𝐹)))) ≤ ((vol*‘𝑧) + 𝑟))
59		inss1 3833	. . . . . . . . 9 ⊢ (𝑧 ∩ ∪ ran ((,) ∘ 𝐹)) ⊆ 𝑧
60	59	a1i 11	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) → (𝑧 ∩ ∪ ran ((,) ∘ 𝐹)) ⊆ 𝑧)
61		ovolsscl 23254	. . . . . . . 8 ⊢ (((𝑧 ∩ ∪ ran ((,) ∘ 𝐹)) ⊆ 𝑧 ∧ 𝑧 ⊆ ℝ ∧ (vol*‘𝑧) ∈ ℝ) → (vol*‘(𝑧 ∩ ∪ ran ((,) ∘ 𝐹))) ∈ ℝ)
62	60, 15, 17, 61	syl3anc 1326	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) → (vol*‘(𝑧 ∩ ∪ ran ((,) ∘ 𝐹))) ∈ ℝ)
63		difssd 3738	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) → (𝑧 ∖ ∪ ran ((,) ∘ 𝐹)) ⊆ 𝑧)
64		ovolsscl 23254	. . . . . . . 8 ⊢ (((𝑧 ∖ ∪ ran ((,) ∘ 𝐹)) ⊆ 𝑧 ∧ 𝑧 ⊆ ℝ ∧ (vol*‘𝑧) ∈ ℝ) → (vol*‘(𝑧 ∖ ∪ ran ((,) ∘ 𝐹))) ∈ ℝ)
65	63, 15, 17, 64	syl3anc 1326	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) → (vol*‘(𝑧 ∖ ∪ ran ((,) ∘ 𝐹))) ∈ ℝ)
66	62, 65	readdcld 10069	. . . . . 6 ⊢ ((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) → ((vol*‘(𝑧 ∩ ∪ ran ((,) ∘ 𝐹))) + (vol*‘(𝑧 ∖ ∪ ran ((,) ∘ 𝐹)))) ∈ ℝ)
67		alrple 12037	. . . . . 6 ⊢ ((((vol*‘(𝑧 ∩ ∪ ran ((,) ∘ 𝐹))) + (vol*‘(𝑧 ∖ ∪ ran ((,) ∘ 𝐹)))) ∈ ℝ ∧ (vol*‘𝑧) ∈ ℝ) → (((vol*‘(𝑧 ∩ ∪ ran ((,) ∘ 𝐹))) + (vol*‘(𝑧 ∖ ∪ ran ((,) ∘ 𝐹)))) ≤ (vol*‘𝑧) ↔ ∀𝑟 ∈ ℝ+ ((vol*‘(𝑧 ∩ ∪ ran ((,) ∘ 𝐹))) + (vol*‘(𝑧 ∖ ∪ ran ((,) ∘ 𝐹)))) ≤ ((vol*‘𝑧) + 𝑟)))
68	66, 17, 67	syl2anc 693	. . . . 5 ⊢ ((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) → (((vol*‘(𝑧 ∩ ∪ ran ((,) ∘ 𝐹))) + (vol*‘(𝑧 ∖ ∪ ran ((,) ∘ 𝐹)))) ≤ (vol*‘𝑧) ↔ ∀𝑟 ∈ ℝ+ ((vol*‘(𝑧 ∩ ∪ ran ((,) ∘ 𝐹))) + (vol*‘(𝑧 ∖ ∪ ran ((,) ∘ 𝐹)))) ≤ ((vol*‘𝑧) + 𝑟)))
69	58, 68	mpbird 247	. . . 4 ⊢ ((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) → ((vol*‘(𝑧 ∩ ∪ ran ((,) ∘ 𝐹))) + (vol*‘(𝑧 ∖ ∪ ran ((,) ∘ 𝐹)))) ≤ (vol*‘𝑧))
70	69	expr 643	. . 3 ⊢ ((𝜑 ∧ 𝑧 ∈ 𝒫 ℝ) → ((vol*‘𝑧) ∈ ℝ → ((vol*‘(𝑧 ∩ ∪ ran ((,) ∘ 𝐹))) + (vol*‘(𝑧 ∖ ∪ ran ((,) ∘ 𝐹)))) ≤ (vol*‘𝑧)))
71	70	ralrimiva 2966	. 2 ⊢ (𝜑 → ∀𝑧 ∈ 𝒫 ℝ((vol*‘𝑧) ∈ ℝ → ((vol*‘(𝑧 ∩ ∪ ran ((,) ∘ 𝐹))) + (vol*‘(𝑧 ∖ ∪ ran ((,) ∘ 𝐹)))) ≤ (vol*‘𝑧)))
72		ismbl2 23295	. 2 ⊢ (∪ ran ((,) ∘ 𝐹) ∈ dom vol ↔ (∪ ran ((,) ∘ 𝐹) ⊆ ℝ ∧ ∀𝑧 ∈ 𝒫 ℝ((vol*‘𝑧) ∈ ℝ → ((vol*‘(𝑧 ∩ ∪ ran ((,) ∘ 𝐹))) + (vol*‘(𝑧 ∖ ∪ ran ((,) ∘ 𝐹)))) ≤ (vol*‘𝑧))))
73	13, 71, 72	sylanbrc 698	1 ⊢ (𝜑 → ∪ ran ((,) ∘ 𝐹) ∈ dom vol)

Syntax hints:   → wi 4   ↔ wb 196   ∧ wa 384   = wceq 1483   ∈ wcel 1990   ≠ wne 2794  ∀wral 2912  ∃wrex 2913   ∖ cdif 3571   ∩ cin 3573   ⊆ wss 3574  𝒫 cpw 4158  ∪ cuni 4436  Disj wdisj 4620   class class class wbr 4653   × cxp 5112  dom cdm 5114  ran crn 5115   ∘ ccom 5118  ⟶wf 5884  ‘cfv 5888  (class class class)co 6650   ↑_𝑚 cmap 7857  supcsup 8346  ℂcc 9934  ℝcr 9935  0cc0 9936  1c1 9937   + caddc 9939   · cmul 9941  ℝ^*cxr 10073   < clt 10074   ≤ cle 10075   − cmin 10266   / cdiv 10684  ℕcn 11020  2c2 11070  4c4 11072  ℝ⁺crp 11832  (,)cioo 12175  seqcseq 12801  abscabs 13974  vol*covol 23231  volcvol 23232

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-8 1992  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-rep 4771  ax-sep 4781  ax-nul 4789  ax-pow 4843  ax-pr 4906  ax-un 6949  ax-inf2 8538  ax-cnex 9992  ax-resscn 9993  ax-1cn 9994  ax-icn 9995  ax-addcl 9996  ax-addrcl 9997  ax-mulcl 9998  ax-mulrcl 9999  ax-mulcom 10000  ax-addass 10001  ax-mulass 10002  ax-distr 10003  ax-i2m1 10004  ax-1ne0 10005  ax-1rid 10006  ax-rnegex 10007  ax-rrecex 10008  ax-cnre 10009  ax-pre-lttri 10010  ax-pre-lttrn 10011  ax-pre-ltadd 10012  ax-pre-mulgt0 10013  ax-pre-sup 10014

This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3or 1038  df-3an 1039  df-tru 1486  df-fal 1489  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ne 2795  df-nel 2898  df-ral 2917  df-rex 2918  df-reu 2919  df-rmo 2920  df-rab 2921  df-v 3202  df-sbc 3436  df-csb 3534  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-pss 3590  df-nul 3916  df-if 4087  df-pw 4160  df-sn 4178  df-pr 4180  df-tp 4182  df-op 4184  df-uni 4437  df-int 4476  df-iun 4522  df-disj 4621  df-br 4654  df-opab 4713  df-mpt 4730  df-tr 4753  df-id 5024  df-eprel 5029  df-po 5035  df-so 5036  df-fr 5073  df-se 5074  df-we 5075  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-rn 5125  df-res 5126  df-ima 5127  df-pred 5680  df-ord 5726  df-on 5727  df-lim 5728  df-suc 5729  df-iota 5851  df-fun 5890  df-fn 5891  df-f 5892  df-f1 5893  df-fo 5894  df-f1o 5895  df-fv 5896  df-isom 5897  df-riota 6611  df-ov 6653  df-oprab 6654  df-mpt2 6655  df-of 6897  df-om 7066  df-1st 7168  df-2nd 7169  df-wrecs 7407  df-recs 7468  df-rdg 7506  df-1o 7560  df-2o 7561  df-oadd 7564  df-er 7742  df-map 7859  df-pm 7860  df-en 7956  df-dom 7957  df-sdom 7958  df-fin 7959  df-fi 8317  df-sup 8348  df-inf 8349  df-oi 8415  df-card 8765  df-acn 8768  df-cda 8990  df-pnf 10076  df-mnf 10077  df-xr 10078  df-ltxr 10079  df-le 10080  df-sub 10268  df-neg 10269  df-div 10685  df-nn 11021  df-2 11079  df-3 11080  df-4 11081  df-n0 11293  df-z 11378  df-uz 11688  df-q 11789  df-rp 11833  df-xneg 11946  df-xadd 11947  df-xmul 11948  df-ioo 12179  df-ico 12181  df-icc 12182  df-fz 12327  df-fzo 12466  df-fl 12593  df-seq 12802  df-exp 12861  df-hash 13118  df-cj 13839  df-re 13840  df-im 13841  df-sqrt 13975  df-abs 13976  df-clim 14219  df-rlim 14220  df-sum 14417  df-rest 16083  df-topgen 16104  df-psmet 19738  df-xmet 19739  df-met 19740  df-bl 19741  df-mopn 19742  df-top 20699  df-topon 20716  df-bases 20750  df-cmp 21190  df-ovol 23233  df-vol 23234

This theorem is referenced by:  uniiccmbl  23358