Theorem uniioombl 23163

Description: A disjoint union of open intervals is measurable. (This proof does not use countable choice, unlike iunmbl 23128.) 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 12142	. . . . 5 ⊢ (,):(ℝ* × ℝ*)⟶𝒫 ℝ
2		uniioombl.1	. . . . . 6 ⊢ (𝜑 → 𝐹:ℕ⟶( ≤ ∩ (ℝ × ℝ)))
3		inss2 3796	. . . . . . 7 ⊢ ( ≤ ∩ (ℝ × ℝ)) ⊆ (ℝ × ℝ)
4		rexpssxrxp 9963	. . . . . . 7 ⊢ (ℝ × ℝ) ⊆ (ℝ* × ℝ*)
5	3, 4	sstri 3577	. . . . . 6 ⊢ ( ≤ ∩ (ℝ × ℝ)) ⊆ (ℝ* × ℝ*)
6		fss 5969	. . . . . 6 ⊢ ((𝐹:ℕ⟶( ≤ ∩ (ℝ × ℝ)) ∧ ( ≤ ∩ (ℝ × ℝ)) ⊆ (ℝ* × ℝ*)) → 𝐹:ℕ⟶(ℝ* × ℝ*))
7	2, 5, 6	sylancl 693	. . . . 5 ⊢ (𝜑 → 𝐹:ℕ⟶(ℝ* × ℝ*))
8		fco 5971	. . . . 5 ⊢ (((,):(ℝ* × ℝ*)⟶𝒫 ℝ ∧ 𝐹:ℕ⟶(ℝ* × ℝ*)) → ((,) ∘ 𝐹):ℕ⟶𝒫 ℝ)
9	1, 7, 8	sylancr 694	. . . 4 ⊢ (𝜑 → ((,) ∘ 𝐹):ℕ⟶𝒫 ℝ)
10		frn 5966	. . . 4 ⊢ (((,) ∘ 𝐹):ℕ⟶𝒫 ℝ → ran ((,) ∘ 𝐹) ⊆ 𝒫 ℝ)
11	9, 10	syl 17	. . 3 ⊢ (𝜑 → ran ((,) ∘ 𝐹) ⊆ 𝒫 ℝ)
12		sspwuni 4547	. . 3 ⊢ (ran ((,) ∘ 𝐹) ⊆ 𝒫 ℝ ↔ ∪ ran ((,) ∘ 𝐹) ⊆ ℝ)
13	11, 12	sylib 207	. 2 ⊢ (𝜑 → ∪ ran ((,) ∘ 𝐹) ⊆ ℝ)
14		elpwi 4117	. . . . . . . . . . 11 ⊢ (𝑧 ∈ 𝒫 ℝ → 𝑧 ⊆ ℝ)
15	14	ad2antrl 760	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) → 𝑧 ⊆ ℝ)
16	15	adantr 480	. . . . . . . . 9 ⊢ (((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) ∧ 𝑟 ∈ ℝ+) → 𝑧 ⊆ ℝ)
17		simprr 792	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) → (vol*‘𝑧) ∈ ℝ)
18	17	adantr 480	. . . . . . . . 9 ⊢ (((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) ∧ 𝑟 ∈ ℝ+) → (vol*‘𝑧) ∈ ℝ)
19		rphalfcl 11734	. . . . . . . . . . 11 ⊢ (𝑟 ∈ ℝ+ → (𝑟 / 2) ∈ ℝ+)
20	19	rphalfcld 11760	. . . . . . . . . 10 ⊢ (𝑟 ∈ ℝ+ → ((𝑟 / 2) / 2) ∈ ℝ+)
21	20	adantl 481	. . . . . . . . 9 ⊢ (((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) ∧ 𝑟 ∈ ℝ+) → ((𝑟 / 2) / 2) ∈ ℝ+)
22		eqid 2610	. . . . . . . . . 10 ⊢ seq1( + , ((abs ∘ − ) ∘ 𝑓)) = seq1( + , ((abs ∘ − ) ∘ 𝑓))
23	22	ovolgelb 23055	. . . . . . . . 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 1318	. . . . . . . 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 762	. . . . . . . . 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 762	. . . . . . . . 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 2610	. . . . . . . . 9 ⊢ ∪ ran ((,) ∘ 𝐹) = ∪ ran ((,) ∘ 𝐹)
30	18	adantr 480	. . . . . . . . 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 481	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) ∧ 𝑟 ∈ ℝ+) → (𝑟 / 2) ∈ ℝ+)
32	31	adantr 480	. . . . . . . . . 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 11760	. . . . . . . . 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 7765	. . . . . . . . . 10 ⊢ (𝑓 ∈ (( ≤ ∩ (ℝ × ℝ)) ↑𝑚 ℕ) → 𝑓:ℕ⟶( ≤ ∩ (ℝ × ℝ)))
35	34	ad2antrl 760	. . . . . . . . 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 800	. . . . . . . . 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 801	. . . . . . . . 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 23162	. . . . . . . 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 3017	. . . . . . 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 11717	. . . . . . . . . . . . 13 ⊢ (𝑟 ∈ ℝ+ → 𝑟 ∈ ℂ)
41	40	adantl 481	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) ∧ 𝑟 ∈ ℝ+) → 𝑟 ∈ ℂ)
42		2cnd 10970	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) ∧ 𝑟 ∈ ℝ+) → 2 ∈ ℂ)
43		2ne0 10990	. . . . . . . . . . . . 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 10711	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) ∧ 𝑟 ∈ ℝ+) → ((𝑟 / 2) / 2) = (𝑟 / (2 · 2)))
46		2t2e4 11054	. . . . . . . . . . . 12 ⊢ (2 · 2) = 4
47	46	oveq2i 6560	. . . . . . . . . . 11 ⊢ (𝑟 / (2 · 2)) = (𝑟 / 4)
48	45, 47	syl6eq 2660	. . . . . . . . . 10 ⊢ (((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) ∧ 𝑟 ∈ ℝ+) → ((𝑟 / 2) / 2) = (𝑟 / 4))
49	48	oveq2d 6565	. . . . . . . . 9 ⊢ (((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) ∧ 𝑟 ∈ ℝ+) → (4 · ((𝑟 / 2) / 2)) = (4 · (𝑟 / 4)))
50		4cn 10975	. . . . . . . . . . 11 ⊢ 4 ∈ ℂ
51	50	a1i 11	. . . . . . . . . 10 ⊢ (((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) ∧ 𝑟 ∈ ℝ+) → 4 ∈ ℂ)
52		4ne0 10994	. . . . . . . . . . 11 ⊢ 4 ≠ 0
53	52	a1i 11	. . . . . . . . . 10 ⊢ (((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) ∧ 𝑟 ∈ ℝ+) → 4 ≠ 0)
54	41, 51, 53	divcan2d 10682	. . . . . . . . 9 ⊢ (((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) ∧ 𝑟 ∈ ℝ+) → (4 · (𝑟 / 4)) = 𝑟)
55	49, 54	eqtrd 2644	. . . . . . . 8 ⊢ (((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) ∧ 𝑟 ∈ ℝ+) → (4 · ((𝑟 / 2) / 2)) = 𝑟)
56	55	oveq2d 6565	. . . . . . 7 ⊢ (((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) ∧ 𝑟 ∈ ℝ+) → ((vol*‘𝑧) + (4 · ((𝑟 / 2) / 2))) = ((vol*‘𝑧) + 𝑟))
57	39, 56	breqtrd 4609	. . . . . 6 ⊢ (((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) ∧ 𝑟 ∈ ℝ+) → ((vol*‘(𝑧 ∩ ∪ ran ((,) ∘ 𝐹))) + (vol*‘(𝑧 ∖ ∪ ran ((,) ∘ 𝐹)))) ≤ ((vol*‘𝑧) + 𝑟))
58	57	ralrimiva 2949	. . . . 5 ⊢ ((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) → ∀𝑟 ∈ ℝ+ ((vol*‘(𝑧 ∩ ∪ ran ((,) ∘ 𝐹))) + (vol*‘(𝑧 ∖ ∪ ran ((,) ∘ 𝐹)))) ≤ ((vol*‘𝑧) + 𝑟))
59		inss1 3795	. . . . . . . . 9 ⊢ (𝑧 ∩ ∪ ran ((,) ∘ 𝐹)) ⊆ 𝑧
60	59	a1i 11	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) → (𝑧 ∩ ∪ ran ((,) ∘ 𝐹)) ⊆ 𝑧)
61		ovolsscl 23061	. . . . . . . 8 ⊢ (((𝑧 ∩ ∪ ran ((,) ∘ 𝐹)) ⊆ 𝑧 ∧ 𝑧 ⊆ ℝ ∧ (vol*‘𝑧) ∈ ℝ) → (vol*‘(𝑧 ∩ ∪ ran ((,) ∘ 𝐹))) ∈ ℝ)
62	60, 15, 17, 61	syl3anc 1318	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) → (vol*‘(𝑧 ∩ ∪ ran ((,) ∘ 𝐹))) ∈ ℝ)
63		difssd 3700	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) → (𝑧 ∖ ∪ ran ((,) ∘ 𝐹)) ⊆ 𝑧)
64		ovolsscl 23061	. . . . . . . 8 ⊢ (((𝑧 ∖ ∪ ran ((,) ∘ 𝐹)) ⊆ 𝑧 ∧ 𝑧 ⊆ ℝ ∧ (vol*‘𝑧) ∈ ℝ) → (vol*‘(𝑧 ∖ ∪ ran ((,) ∘ 𝐹))) ∈ ℝ)
65	63, 15, 17, 64	syl3anc 1318	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) → (vol*‘(𝑧 ∖ ∪ ran ((,) ∘ 𝐹))) ∈ ℝ)
66	62, 65	readdcld 9948	. . . . . 6 ⊢ ((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) → ((vol*‘(𝑧 ∩ ∪ ran ((,) ∘ 𝐹))) + (vol*‘(𝑧 ∖ ∪ ran ((,) ∘ 𝐹)))) ∈ ℝ)
67		alrple 11911	. . . . . 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 691	. . . . 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 246	. . . 4 ⊢ ((𝜑 ∧ (𝑧 ∈ 𝒫 ℝ ∧ (vol*‘𝑧) ∈ ℝ)) → ((vol*‘(𝑧 ∩ ∪ ran ((,) ∘ 𝐹))) + (vol*‘(𝑧 ∖ ∪ ran ((,) ∘ 𝐹)))) ≤ (vol*‘𝑧))
70	69	expr 641	. . 3 ⊢ ((𝜑 ∧ 𝑧 ∈ 𝒫 ℝ) → ((vol*‘𝑧) ∈ ℝ → ((vol*‘(𝑧 ∩ ∪ ran ((,) ∘ 𝐹))) + (vol*‘(𝑧 ∖ ∪ ran ((,) ∘ 𝐹)))) ≤ (vol*‘𝑧)))
71	70	ralrimiva 2949	. 2 ⊢ (𝜑 → ∀𝑧 ∈ 𝒫 ℝ((vol*‘𝑧) ∈ ℝ → ((vol*‘(𝑧 ∩ ∪ ran ((,) ∘ 𝐹))) + (vol*‘(𝑧 ∖ ∪ ran ((,) ∘ 𝐹)))) ≤ (vol*‘𝑧)))
72		ismbl2 23102	. 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 695	1 ⊢ (𝜑 → ∪ ran ((,) ∘ 𝐹) ∈ dom vol)

Syntax hints:   → wi 4   ↔ wb 195   ∧ wa 383   = wceq 1475   ∈ wcel 1977   ≠ wne 2780  ∀wral 2896  ∃wrex 2897   ∖ cdif 3537   ∩ cin 3539   ⊆ wss 3540  𝒫 cpw 4108  ∪ cuni 4372  Disj wdisj 4553   class class class wbr 4583   × cxp 5036  dom cdm 5038  ran crn 5039   ∘ ccom 5042  ⟶wf 5800  ‘cfv 5804  (class class class)co 6549   ↑_𝑚 cmap 7744  supcsup 8229  ℂcc 9813  ℝcr 9814  0cc0 9815  1c1 9816   + caddc 9818   · cmul 9820  ℝ^*cxr 9952   < clt 9953   ≤ cle 9954   − cmin 10145   / cdiv 10563  ℕcn 10897  2c2 10947  4c4 10949  ℝ⁺crp 11708  (,)cioo 12046  seqcseq 12663  abscabs 13822  vol*covol 23038  volcvol 23039

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1713  ax-4 1728  ax-5 1827  ax-6 1875  ax-7 1922  ax-8 1979  ax-9 1986  ax-10 2006  ax-11 2021  ax-12 2034  ax-13 2234  ax-ext 2590  ax-rep 4699  ax-sep 4709  ax-nul 4717  ax-pow 4769  ax-pr 4833  ax-un 6847  ax-inf2 8421  ax-cnex 9871  ax-resscn 9872  ax-1cn 9873  ax-icn 9874  ax-addcl 9875  ax-addrcl 9876  ax-mulcl 9877  ax-mulrcl 9878  ax-mulcom 9879  ax-addass 9880  ax-mulass 9881  ax-distr 9882  ax-i2m1 9883  ax-1ne0 9884  ax-1rid 9885  ax-rnegex 9886  ax-rrecex 9887  ax-cnre 9888  ax-pre-lttri 9889  ax-pre-lttrn 9890  ax-pre-ltadd 9891  ax-pre-mulgt0 9892  ax-pre-sup 9893

This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  df-3or 1032  df-3an 1033  df-tru 1478  df-fal 1481  df-ex 1696  df-nf 1701  df-sb 1868  df-eu 2462  df-mo 2463  df-clab 2597  df-cleq 2603  df-clel 2606  df-nfc 2740  df-ne 2782  df-nel 2783  df-ral 2901  df-rex 2902  df-reu 2903  df-rmo 2904  df-rab 2905  df-v 3175  df-sbc 3403  df-csb 3500  df-dif 3543  df-un 3545  df-in 3547  df-ss 3554  df-pss 3556  df-nul 3875  df-if 4037  df-pw 4110  df-sn 4126  df-pr 4128  df-tp 4130  df-op 4132  df-uni 4373  df-int 4411  df-iun 4457  df-disj 4554  df-br 4584  df-opab 4644  df-mpt 4645  df-tr 4681  df-eprel 4949  df-id 4953  df-po 4959  df-so 4960  df-fr 4997  df-se 4998  df-we 4999  df-xp 5044  df-rel 5045  df-cnv 5046  df-co 5047  df-dm 5048  df-rn 5049  df-res 5050  df-ima 5051  df-pred 5597  df-ord 5643  df-on 5644  df-lim 5645  df-suc 5646  df-iota 5768  df-fun 5806  df-fn 5807  df-f 5808  df-f1 5809  df-fo 5810  df-f1o 5811  df-fv 5812  df-isom 5813  df-riota 6511  df-ov 6552  df-oprab 6553  df-mpt2 6554  df-of 6795  df-om 6958  df-1st 7059  df-2nd 7060  df-wrecs 7294  df-recs 7355  df-rdg 7393  df-1o 7447  df-2o 7448  df-oadd 7451  df-er 7629  df-map 7746  df-pm 7747  df-en 7842  df-dom 7843  df-sdom 7844  df-fin 7845  df-fi 8200  df-sup 8231  df-inf 8232  df-oi 8298  df-card 8648  df-acn 8651  df-cda 8873  df-pnf 9955  df-mnf 9956  df-xr 9957  df-ltxr 9958  df-le 9959  df-sub 10147  df-neg 10148  df-div 10564  df-nn 10898  df-2 10956  df-3 10957  df-4 10958  df-n0 11170  df-z 11255  df-uz 11564  df-q 11665  df-rp 11709  df-xneg 11822  df-xadd 11823  df-xmul 11824  df-ioo 12050  df-ico 12052  df-icc 12053  df-fz 12198  df-fzo 12335  df-fl 12455  df-seq 12664  df-exp 12723  df-hash 12980  df-cj 13687  df-re 13688  df-im 13689  df-sqrt 13823  df-abs 13824  df-clim 14067  df-rlim 14068  df-sum 14265  df-rest 15906  df-topgen 15927  df-psmet 19559  df-xmet 19560  df-met 19561  df-bl 19562  df-mopn 19563  df-top 20521  df-bases 20522  df-topon 20523  df-cmp 21000  df-ovol 23040  df-vol 23041

This theorem is referenced by:  uniiccmbl  23164