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Theorem itgsubstlem 26027

Description: Lemma for itgsubst 26028. (Contributed by Mario Carneiro, 12-Sep-2014.)

**Hypotheses**
Ref	Expression
itgsubst.x	⊢ (𝜑 → 𝑋 ∈ ℝ)
itgsubst.y	⊢ (𝜑 → 𝑌 ∈ ℝ)
itgsubst.le	⊢ (𝜑 → 𝑋 ≤ 𝑌)
itgsubst.z	⊢ (𝜑 → 𝑍 ∈ ℝ^*)
itgsubst.w	⊢ (𝜑 → 𝑊 ∈ ℝ^*)
itgsubst.a	⊢ (𝜑 → (𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐴) ∈ ((𝑋[,]𝑌)–cn→(𝑍(,)𝑊)))
itgsubst.b	⊢ (𝜑 → (𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐵) ∈ (((𝑋(,)𝑌)–cn→ℂ) ∩ 𝐿¹))
itgsubst.c	⊢ (𝜑 → (𝑢 ∈ (𝑍(,)𝑊) ↦ 𝐶) ∈ ((𝑍(,)𝑊)–cn→ℂ))
itgsubst.da	⊢ (𝜑 → (ℝ D (𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐴)) = (𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐵))
itgsubst.e	⊢ (𝑢 = 𝐴 → 𝐶 = 𝐸)
itgsubst.k	⊢ (𝑥 = 𝑋 → 𝐴 = 𝐾)
itgsubst.l	⊢ (𝑥 = 𝑌 → 𝐴 = 𝐿)
itgsubst.m	⊢ (𝜑 → 𝑀 ∈ (𝑍(,)𝑊))
itgsubst.n	⊢ (𝜑 → 𝑁 ∈ (𝑍(,)𝑊))
itgsubst.cl2	⊢ ((𝜑 ∧ 𝑥 ∈ (𝑋[,]𝑌)) → 𝐴 ∈ (𝑀(,)𝑁))

**Assertion**
Ref	Expression
itgsubstlem	⊢ (𝜑 → ⨜[𝐾 → 𝐿]𝐶 d𝑢 = ⨜[𝑋 → 𝑌](𝐸 · 𝐵) d𝑥)

Distinct variable groups: 𝑢,𝐸 𝑥,𝑢,𝐾 𝑢,𝑀,𝑥 𝜑,𝑢,𝑥 𝑢,𝑋,𝑥 𝑢,𝑌,𝑥 𝑢,𝐴 𝑥,𝐶 𝑢,𝑊,𝑥 𝑢,𝐿,𝑥 𝑢,𝑁,𝑥 𝑢,𝑍,𝑥 Allowed substitution hints: 𝐴(𝑥) 𝐵(𝑥,𝑢) 𝐶(𝑢) 𝐸(𝑥)

Proof of Theorem itgsubstlem Dummy variables 𝑦 𝑧 𝑡 𝑣 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		itgsubst.le	. . 3 ⊢ (𝜑 → 𝑋 ≤ 𝑌)
2	1	ditgpos 25832	. 2 ⊢ (𝜑 → ⨜[𝑋 → 𝑌](𝐸 · 𝐵) d𝑥 = ∫(𝑋(,)𝑌)(𝐸 · 𝐵) d𝑥)
3		itgsubst.x	. . . 4 ⊢ (𝜑 → 𝑋 ∈ ℝ)
4		itgsubst.y	. . . 4 ⊢ (𝜑 → 𝑌 ∈ ℝ)
5		ax-resscn 11084	. . . . . . . 8 ⊢ ℝ ⊆ ℂ
6	5	a1i 11	. . . . . . 7 ⊢ (𝜑 → ℝ ⊆ ℂ)
7		iccssre 13371	. . . . . . . 8 ⊢ ((𝑋 ∈ ℝ ∧ 𝑌 ∈ ℝ) → (𝑋[,]𝑌) ⊆ ℝ)
8	3, 4, 7	syl2anc 585	. . . . . . 7 ⊢ (𝜑 → (𝑋[,]𝑌) ⊆ ℝ)
9		itgsubst.cl2	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝑋[,]𝑌)) → 𝐴 ∈ (𝑀(,)𝑁))
10		eqidd 2738	. . . . . . . . . . 11 ⊢ (𝜑 → (𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐴) = (𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐴))
11		eqidd 2738	. . . . . . . . . . 11 ⊢ (𝜑 → (𝑣 ∈ (𝑀(,)𝑁) ↦ ∫(𝑀(,)𝑣)𝐶 d𝑢) = (𝑣 ∈ (𝑀(,)𝑁) ↦ ∫(𝑀(,)𝑣)𝐶 d𝑢))
12		oveq2 7366	. . . . . . . . . . . 12 ⊢ (𝑣 = 𝐴 → (𝑀(,)𝑣) = (𝑀(,)𝐴))
13		itgeq1 25749	. . . . . . . . . . . 12 ⊢ ((𝑀(,)𝑣) = (𝑀(,)𝐴) → ∫(𝑀(,)𝑣)𝐶 d𝑢 = ∫(𝑀(,)𝐴)𝐶 d𝑢)
14	12, 13	syl 17	. . . . . . . . . . 11 ⊢ (𝑣 = 𝐴 → ∫(𝑀(,)𝑣)𝐶 d𝑢 = ∫(𝑀(,)𝐴)𝐶 d𝑢)
15	9, 10, 11, 14	fmptco 7074	. . . . . . . . . 10 ⊢ (𝜑 → ((𝑣 ∈ (𝑀(,)𝑁) ↦ ∫(𝑀(,)𝑣)𝐶 d𝑢) ∘ (𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐴)) = (𝑥 ∈ (𝑋[,]𝑌) ↦ ∫(𝑀(,)𝐴)𝐶 d𝑢))
16	9	fmpttd 7059	. . . . . . . . . . . 12 ⊢ (𝜑 → (𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐴):(𝑋[,]𝑌)⟶(𝑀(,)𝑁))
17		ioossicc 13375	. . . . . . . . . . . . . . 15 ⊢ (𝑀(,)𝑁) ⊆ (𝑀[,]𝑁)
18		itgsubst.z	. . . . . . . . . . . . . . . 16 ⊢ (𝜑 → 𝑍 ∈ ℝ^*)
19		itgsubst.w	. . . . . . . . . . . . . . . 16 ⊢ (𝜑 → 𝑊 ∈ ℝ^*)
20		itgsubst.m	. . . . . . . . . . . . . . . . . 18 ⊢ (𝜑 → 𝑀 ∈ (𝑍(,)𝑊))
21		eliooord 13347	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑀 ∈ (𝑍(,)𝑊) → (𝑍 < 𝑀 ∧ 𝑀 < 𝑊))
22	20, 21	syl 17	. . . . . . . . . . . . . . . . 17 ⊢ (𝜑 → (𝑍 < 𝑀 ∧ 𝑀 < 𝑊))
23	22	simpld 494	. . . . . . . . . . . . . . . 16 ⊢ (𝜑 → 𝑍 < 𝑀)
24		itgsubst.n	. . . . . . . . . . . . . . . . . 18 ⊢ (𝜑 → 𝑁 ∈ (𝑍(,)𝑊))
25		eliooord 13347	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑁 ∈ (𝑍(,)𝑊) → (𝑍 < 𝑁 ∧ 𝑁 < 𝑊))
26	24, 25	syl 17	. . . . . . . . . . . . . . . . 17 ⊢ (𝜑 → (𝑍 < 𝑁 ∧ 𝑁 < 𝑊))
27	26	simprd 495	. . . . . . . . . . . . . . . 16 ⊢ (𝜑 → 𝑁 < 𝑊)
28		iccssioo 13357	. . . . . . . . . . . . . . . 16 ⊢ (((𝑍 ∈ ℝ^* ∧ 𝑊 ∈ ℝ^*) ∧ (𝑍 < 𝑀 ∧ 𝑁 < 𝑊)) → (𝑀[,]𝑁) ⊆ (𝑍(,)𝑊))
29	18, 19, 23, 27, 28	syl22anc 839	. . . . . . . . . . . . . . 15 ⊢ (𝜑 → (𝑀[,]𝑁) ⊆ (𝑍(,)𝑊))
30	17, 29	sstrid 3934	. . . . . . . . . . . . . 14 ⊢ (𝜑 → (𝑀(,)𝑁) ⊆ (𝑍(,)𝑊))
31		ioossre 13349	. . . . . . . . . . . . . . . 16 ⊢ (𝑍(,)𝑊) ⊆ ℝ
32	31	a1i 11	. . . . . . . . . . . . . . 15 ⊢ (𝜑 → (𝑍(,)𝑊) ⊆ ℝ)
33	32, 5	sstrdi 3935	. . . . . . . . . . . . . 14 ⊢ (𝜑 → (𝑍(,)𝑊) ⊆ ℂ)
34	30, 33	sstrd 3933	. . . . . . . . . . . . 13 ⊢ (𝜑 → (𝑀(,)𝑁) ⊆ ℂ)
35		itgsubst.a	. . . . . . . . . . . . 13 ⊢ (𝜑 → (𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐴) ∈ ((𝑋[,]𝑌)–cn→(𝑍(,)𝑊)))
36		cncfcdm 24874	. . . . . . . . . . . . 13 ⊢ (((𝑀(,)𝑁) ⊆ ℂ ∧ (𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐴) ∈ ((𝑋[,]𝑌)–cn→(𝑍(,)𝑊))) → ((𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐴) ∈ ((𝑋[,]𝑌)–cn→(𝑀(,)𝑁)) ↔ (𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐴):(𝑋[,]𝑌)⟶(𝑀(,)𝑁)))
37	34, 35, 36	syl2anc 585	. . . . . . . . . . . 12 ⊢ (𝜑 → ((𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐴) ∈ ((𝑋[,]𝑌)–cn→(𝑀(,)𝑁)) ↔ (𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐴):(𝑋[,]𝑌)⟶(𝑀(,)𝑁)))
38	16, 37	mpbird 257	. . . . . . . . . . 11 ⊢ (𝜑 → (𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐴) ∈ ((𝑋[,]𝑌)–cn→(𝑀(,)𝑁)))
39	17	sseli 3918	. . . . . . . . . . . . . 14 ⊢ (𝑣 ∈ (𝑀(,)𝑁) → 𝑣 ∈ (𝑀[,]𝑁))
40	31, 24	sselid 3920	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝜑 → 𝑁 ∈ ℝ)
41	40	rexrd 11184	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝜑 → 𝑁 ∈ ℝ^*)
42	41	adantr 480	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝜑 ∧ 𝑣 ∈ (𝑀[,]𝑁)) → 𝑁 ∈ ℝ^*)
43	31, 20	sselid 3920	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝜑 → 𝑀 ∈ ℝ)
44		elicc2 13353	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((𝑀 ∈ ℝ ∧ 𝑁 ∈ ℝ) → (𝑣 ∈ (𝑀[,]𝑁) ↔ (𝑣 ∈ ℝ ∧ 𝑀 ≤ 𝑣 ∧ 𝑣 ≤ 𝑁)))
45	43, 40, 44	syl2anc 585	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝜑 → (𝑣 ∈ (𝑀[,]𝑁) ↔ (𝑣 ∈ ℝ ∧ 𝑀 ≤ 𝑣 ∧ 𝑣 ≤ 𝑁)))
46	45	biimpa 476	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝜑 ∧ 𝑣 ∈ (𝑀[,]𝑁)) → (𝑣 ∈ ℝ ∧ 𝑀 ≤ 𝑣 ∧ 𝑣 ≤ 𝑁))
47	46	simp3d 1145	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝜑 ∧ 𝑣 ∈ (𝑀[,]𝑁)) → 𝑣 ≤ 𝑁)
48		iooss2 13323	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝑁 ∈ ℝ^* ∧ 𝑣 ≤ 𝑁) → (𝑀(,)𝑣) ⊆ (𝑀(,)𝑁))
49	42, 47, 48	syl2anc 585	. . . . . . . . . . . . . . . . 17 ⊢ ((𝜑 ∧ 𝑣 ∈ (𝑀[,]𝑁)) → (𝑀(,)𝑣) ⊆ (𝑀(,)𝑁))
50	49	sselda 3922	. . . . . . . . . . . . . . . 16 ⊢ (((𝜑 ∧ 𝑣 ∈ (𝑀[,]𝑁)) ∧ 𝑢 ∈ (𝑀(,)𝑣)) → 𝑢 ∈ (𝑀(,)𝑁))
51	30	sselda 3922	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝜑 ∧ 𝑢 ∈ (𝑀(,)𝑁)) → 𝑢 ∈ (𝑍(,)𝑊))
52		itgsubst.c	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝜑 → (𝑢 ∈ (𝑍(,)𝑊) ↦ 𝐶) ∈ ((𝑍(,)𝑊)–cn→ℂ))
53		cncff 24869	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((𝑢 ∈ (𝑍(,)𝑊) ↦ 𝐶) ∈ ((𝑍(,)𝑊)–cn→ℂ) → (𝑢 ∈ (𝑍(,)𝑊) ↦ 𝐶):(𝑍(,)𝑊)⟶ℂ)
54	52, 53	syl 17	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝜑 → (𝑢 ∈ (𝑍(,)𝑊) ↦ 𝐶):(𝑍(,)𝑊)⟶ℂ)
55	54	fvmptelcdm 7057	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝜑 ∧ 𝑢 ∈ (𝑍(,)𝑊)) → 𝐶 ∈ ℂ)
56	51, 55	syldan 592	. . . . . . . . . . . . . . . . 17 ⊢ ((𝜑 ∧ 𝑢 ∈ (𝑀(,)𝑁)) → 𝐶 ∈ ℂ)
57	56	adantlr 716	. . . . . . . . . . . . . . . 16 ⊢ (((𝜑 ∧ 𝑣 ∈ (𝑀[,]𝑁)) ∧ 𝑢 ∈ (𝑀(,)𝑁)) → 𝐶 ∈ ℂ)
58	50, 57	syldan 592	. . . . . . . . . . . . . . 15 ⊢ (((𝜑 ∧ 𝑣 ∈ (𝑀[,]𝑁)) ∧ 𝑢 ∈ (𝑀(,)𝑣)) → 𝐶 ∈ ℂ)
59		ioombl 25541	. . . . . . . . . . . . . . . . 17 ⊢ (𝑀(,)𝑣) ∈ dom vol
60	59	a1i 11	. . . . . . . . . . . . . . . 16 ⊢ ((𝜑 ∧ 𝑣 ∈ (𝑀[,]𝑁)) → (𝑀(,)𝑣) ∈ dom vol)
61	17	a1i 11	. . . . . . . . . . . . . . . . . 18 ⊢ (𝜑 → (𝑀(,)𝑁) ⊆ (𝑀[,]𝑁))
62		ioombl 25541	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑀(,)𝑁) ∈ dom vol
63	62	a1i 11	. . . . . . . . . . . . . . . . . 18 ⊢ (𝜑 → (𝑀(,)𝑁) ∈ dom vol)
64	29	sselda 3922	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝜑 ∧ 𝑢 ∈ (𝑀[,]𝑁)) → 𝑢 ∈ (𝑍(,)𝑊))
65	64, 55	syldan 592	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝜑 ∧ 𝑢 ∈ (𝑀[,]𝑁)) → 𝐶 ∈ ℂ)
66	29	resmptd 5997	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝜑 → ((𝑢 ∈ (𝑍(,)𝑊) ↦ 𝐶) ↾ (𝑀[,]𝑁)) = (𝑢 ∈ (𝑀[,]𝑁) ↦ 𝐶))
67		rescncf 24873	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((𝑀[,]𝑁) ⊆ (𝑍(,)𝑊) → ((𝑢 ∈ (𝑍(,)𝑊) ↦ 𝐶) ∈ ((𝑍(,)𝑊)–cn→ℂ) → ((𝑢 ∈ (𝑍(,)𝑊) ↦ 𝐶) ↾ (𝑀[,]𝑁)) ∈ ((𝑀[,]𝑁)–cn→ℂ)))
68	29, 52, 67	sylc 65	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝜑 → ((𝑢 ∈ (𝑍(,)𝑊) ↦ 𝐶) ↾ (𝑀[,]𝑁)) ∈ ((𝑀[,]𝑁)–cn→ℂ))
69	66, 68	eqeltrrd 2838	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝜑 → (𝑢 ∈ (𝑀[,]𝑁) ↦ 𝐶) ∈ ((𝑀[,]𝑁)–cn→ℂ))
70		cniccibl 25817	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝑀 ∈ ℝ ∧ 𝑁 ∈ ℝ ∧ (𝑢 ∈ (𝑀[,]𝑁) ↦ 𝐶) ∈ ((𝑀[,]𝑁)–cn→ℂ)) → (𝑢 ∈ (𝑀[,]𝑁) ↦ 𝐶) ∈ 𝐿¹)
71	43, 40, 69, 70	syl3anc 1374	. . . . . . . . . . . . . . . . . 18 ⊢ (𝜑 → (𝑢 ∈ (𝑀[,]𝑁) ↦ 𝐶) ∈ 𝐿¹)
72	61, 63, 65, 71	iblss 25781	. . . . . . . . . . . . . . . . 17 ⊢ (𝜑 → (𝑢 ∈ (𝑀(,)𝑁) ↦ 𝐶) ∈ 𝐿¹)
73	72	adantr 480	. . . . . . . . . . . . . . . 16 ⊢ ((𝜑 ∧ 𝑣 ∈ (𝑀[,]𝑁)) → (𝑢 ∈ (𝑀(,)𝑁) ↦ 𝐶) ∈ 𝐿¹)
74	49, 60, 57, 73	iblss 25781	. . . . . . . . . . . . . . 15 ⊢ ((𝜑 ∧ 𝑣 ∈ (𝑀[,]𝑁)) → (𝑢 ∈ (𝑀(,)𝑣) ↦ 𝐶) ∈ 𝐿¹)
75	58, 74	itgcl 25760	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑣 ∈ (𝑀[,]𝑁)) → ∫(𝑀(,)𝑣)𝐶 d𝑢 ∈ ℂ)
76	39, 75	sylan2 594	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑣 ∈ (𝑀(,)𝑁)) → ∫(𝑀(,)𝑣)𝐶 d𝑢 ∈ ℂ)
77	76	fmpttd 7059	. . . . . . . . . . . 12 ⊢ (𝜑 → (𝑣 ∈ (𝑀(,)𝑁) ↦ ∫(𝑀(,)𝑣)𝐶 d𝑢):(𝑀(,)𝑁)⟶ℂ)
78	30, 31	sstrdi 3935	. . . . . . . . . . . 12 ⊢ (𝜑 → (𝑀(,)𝑁) ⊆ ℝ)
79		fveq2 6832	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑡 = 𝑢 → ((𝑢 ∈ (𝑀(,)𝑁) ↦ 𝐶)‘𝑡) = ((𝑢 ∈ (𝑀(,)𝑁) ↦ 𝐶)‘𝑢))
80		nffvmpt1 6843	. . . . . . . . . . . . . . . . . . 19 ⊢ Ⅎ𝑢((𝑢 ∈ (𝑀(,)𝑁) ↦ 𝐶)‘𝑡)
81		nfcv 2899	. . . . . . . . . . . . . . . . . . 19 ⊢ Ⅎ𝑡((𝑢 ∈ (𝑀(,)𝑁) ↦ 𝐶)‘𝑢)
82	79, 80, 81	cbvitg 25752	. . . . . . . . . . . . . . . . . 18 ⊢ ∫(𝑀(,)𝑣)((𝑢 ∈ (𝑀(,)𝑁) ↦ 𝐶)‘𝑡) d𝑡 = ∫(𝑀(,)𝑣)((𝑢 ∈ (𝑀(,)𝑁) ↦ 𝐶)‘𝑢) d𝑢
83		eqid 2737	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑢 ∈ (𝑀(,)𝑁) ↦ 𝐶) = (𝑢 ∈ (𝑀(,)𝑁) ↦ 𝐶)
84	83	fvmpt2 6951	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((𝑢 ∈ (𝑀(,)𝑁) ∧ 𝐶 ∈ ℂ) → ((𝑢 ∈ (𝑀(,)𝑁) ↦ 𝐶)‘𝑢) = 𝐶)
85	50, 58, 84	syl2anc 585	. . . . . . . . . . . . . . . . . . 19 ⊢ (((𝜑 ∧ 𝑣 ∈ (𝑀[,]𝑁)) ∧ 𝑢 ∈ (𝑀(,)𝑣)) → ((𝑢 ∈ (𝑀(,)𝑁) ↦ 𝐶)‘𝑢) = 𝐶)
86	85	itgeq2dv 25758	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝜑 ∧ 𝑣 ∈ (𝑀[,]𝑁)) → ∫(𝑀(,)𝑣)((𝑢 ∈ (𝑀(,)𝑁) ↦ 𝐶)‘𝑢) d𝑢 = ∫(𝑀(,)𝑣)𝐶 d𝑢)
87	82, 86	eqtrid 2784	. . . . . . . . . . . . . . . . 17 ⊢ ((𝜑 ∧ 𝑣 ∈ (𝑀[,]𝑁)) → ∫(𝑀(,)𝑣)((𝑢 ∈ (𝑀(,)𝑁) ↦ 𝐶)‘𝑡) d𝑡 = ∫(𝑀(,)𝑣)𝐶 d𝑢)
88	87	mpteq2dva 5179	. . . . . . . . . . . . . . . 16 ⊢ (𝜑 → (𝑣 ∈ (𝑀[,]𝑁) ↦ ∫(𝑀(,)𝑣)((𝑢 ∈ (𝑀(,)𝑁) ↦ 𝐶)‘𝑡) d𝑡) = (𝑣 ∈ (𝑀[,]𝑁) ↦ ∫(𝑀(,)𝑣)𝐶 d𝑢))
89	88	oveq2d 7374	. . . . . . . . . . . . . . 15 ⊢ (𝜑 → (ℝ D (𝑣 ∈ (𝑀[,]𝑁) ↦ ∫(𝑀(,)𝑣)((𝑢 ∈ (𝑀(,)𝑁) ↦ 𝐶)‘𝑡) d𝑡)) = (ℝ D (𝑣 ∈ (𝑀[,]𝑁) ↦ ∫(𝑀(,)𝑣)𝐶 d𝑢)))
90		eqid 2737	. . . . . . . . . . . . . . . 16 ⊢ (𝑣 ∈ (𝑀[,]𝑁) ↦ ∫(𝑀(,)𝑣)((𝑢 ∈ (𝑀(,)𝑁) ↦ 𝐶)‘𝑡) d𝑡) = (𝑣 ∈ (𝑀[,]𝑁) ↦ ∫(𝑀(,)𝑣)((𝑢 ∈ (𝑀(,)𝑁) ↦ 𝐶)‘𝑡) d𝑡)
91	3	rexrd 11184	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝜑 → 𝑋 ∈ ℝ^*)
92	4	rexrd 11184	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝜑 → 𝑌 ∈ ℝ^*)
93		lbicc2 13406	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((𝑋 ∈ ℝ^* ∧ 𝑌 ∈ ℝ^* ∧ 𝑋 ≤ 𝑌) → 𝑋 ∈ (𝑋[,]𝑌))
94	91, 92, 1, 93	syl3anc 1374	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝜑 → 𝑋 ∈ (𝑋[,]𝑌))
95		n0i 4281	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑋 ∈ (𝑋[,]𝑌) → ¬ (𝑋[,]𝑌) = ∅)
96	94, 95	syl 17	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝜑 → ¬ (𝑋[,]𝑌) = ∅)
97		feq3 6640	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((𝑀(,)𝑁) = ∅ → ((𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐴):(𝑋[,]𝑌)⟶(𝑀(,)𝑁) ↔ (𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐴):(𝑋[,]𝑌)⟶∅))
98	16, 97	syl5ibcom 245	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝜑 → ((𝑀(,)𝑁) = ∅ → (𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐴):(𝑋[,]𝑌)⟶∅))
99		f00 6714	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐴):(𝑋[,]𝑌)⟶∅ ↔ ((𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐴) = ∅ ∧ (𝑋[,]𝑌) = ∅))
100	99	simprbi 497	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐴):(𝑋[,]𝑌)⟶∅ → (𝑋[,]𝑌) = ∅)
101	98, 100	syl6 35	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝜑 → ((𝑀(,)𝑁) = ∅ → (𝑋[,]𝑌) = ∅))
102	96, 101	mtod 198	. . . . . . . . . . . . . . . . . 18 ⊢ (𝜑 → ¬ (𝑀(,)𝑁) = ∅)
103	43	rexrd 11184	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝜑 → 𝑀 ∈ ℝ^*)
104		ioo0 13312	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝑀 ∈ ℝ^* ∧ 𝑁 ∈ ℝ^*) → ((𝑀(,)𝑁) = ∅ ↔ 𝑁 ≤ 𝑀))
105	103, 41, 104	syl2anc 585	. . . . . . . . . . . . . . . . . 18 ⊢ (𝜑 → ((𝑀(,)𝑁) = ∅ ↔ 𝑁 ≤ 𝑀))
106	102, 105	mtbid 324	. . . . . . . . . . . . . . . . 17 ⊢ (𝜑 → ¬ 𝑁 ≤ 𝑀)
107	40, 43	letrid 11287	. . . . . . . . . . . . . . . . . 18 ⊢ (𝜑 → (𝑁 ≤ 𝑀 ∨ 𝑀 ≤ 𝑁))
108	107	ord 865	. . . . . . . . . . . . . . . . 17 ⊢ (𝜑 → (¬ 𝑁 ≤ 𝑀 → 𝑀 ≤ 𝑁))
109	106, 108	mpd 15	. . . . . . . . . . . . . . . 16 ⊢ (𝜑 → 𝑀 ≤ 𝑁)
110		resmpt 5994	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝑀(,)𝑁) ⊆ (𝑀[,]𝑁) → ((𝑢 ∈ (𝑀[,]𝑁) ↦ 𝐶) ↾ (𝑀(,)𝑁)) = (𝑢 ∈ (𝑀(,)𝑁) ↦ 𝐶))
111	17, 110	ax-mp 5	. . . . . . . . . . . . . . . . 17 ⊢ ((𝑢 ∈ (𝑀[,]𝑁) ↦ 𝐶) ↾ (𝑀(,)𝑁)) = (𝑢 ∈ (𝑀(,)𝑁) ↦ 𝐶)
112		rescncf 24873	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝑀(,)𝑁) ⊆ (𝑀[,]𝑁) → ((𝑢 ∈ (𝑀[,]𝑁) ↦ 𝐶) ∈ ((𝑀[,]𝑁)–cn→ℂ) → ((𝑢 ∈ (𝑀[,]𝑁) ↦ 𝐶) ↾ (𝑀(,)𝑁)) ∈ ((𝑀(,)𝑁)–cn→ℂ)))
113	17, 69, 112	mpsyl 68	. . . . . . . . . . . . . . . . 17 ⊢ (𝜑 → ((𝑢 ∈ (𝑀[,]𝑁) ↦ 𝐶) ↾ (𝑀(,)𝑁)) ∈ ((𝑀(,)𝑁)–cn→ℂ))
114	111, 113	eqeltrrid 2842	. . . . . . . . . . . . . . . 16 ⊢ (𝜑 → (𝑢 ∈ (𝑀(,)𝑁) ↦ 𝐶) ∈ ((𝑀(,)𝑁)–cn→ℂ))
115	90, 43, 40, 109, 114, 72	ftc1cn 26022	. . . . . . . . . . . . . . 15 ⊢ (𝜑 → (ℝ D (𝑣 ∈ (𝑀[,]𝑁) ↦ ∫(𝑀(,)𝑣)((𝑢 ∈ (𝑀(,)𝑁) ↦ 𝐶)‘𝑡) d𝑡)) = (𝑢 ∈ (𝑀(,)𝑁) ↦ 𝐶))
116	29, 31	sstrdi 3935	. . . . . . . . . . . . . . . 16 ⊢ (𝜑 → (𝑀[,]𝑁) ⊆ ℝ)
117		tgioo4 24779	. . . . . . . . . . . . . . . 16 ⊢ (topGen‘ran (,)) = ((TopOpen‘ℂ_fld) ↾_t ℝ)
118		eqid 2737	. . . . . . . . . . . . . . . 16 ⊢ (TopOpen‘ℂ_fld) = (TopOpen‘ℂ_fld)
119		iccntr 24796	. . . . . . . . . . . . . . . . 17 ⊢ ((𝑀 ∈ ℝ ∧ 𝑁 ∈ ℝ) → ((int‘(topGen‘ran (,)))‘(𝑀[,]𝑁)) = (𝑀(,)𝑁))
120	43, 40, 119	syl2anc 585	. . . . . . . . . . . . . . . 16 ⊢ (𝜑 → ((int‘(topGen‘ran (,)))‘(𝑀[,]𝑁)) = (𝑀(,)𝑁))
121	6, 116, 75, 117, 118, 120	dvmptntr 25947	. . . . . . . . . . . . . . 15 ⊢ (𝜑 → (ℝ D (𝑣 ∈ (𝑀[,]𝑁) ↦ ∫(𝑀(,)𝑣)𝐶 d𝑢)) = (ℝ D (𝑣 ∈ (𝑀(,)𝑁) ↦ ∫(𝑀(,)𝑣)𝐶 d𝑢)))
122	89, 115, 121	3eqtr3rd 2781	. . . . . . . . . . . . . 14 ⊢ (𝜑 → (ℝ D (𝑣 ∈ (𝑀(,)𝑁) ↦ ∫(𝑀(,)𝑣)𝐶 d𝑢)) = (𝑢 ∈ (𝑀(,)𝑁) ↦ 𝐶))
123	122	dmeqd 5852	. . . . . . . . . . . . 13 ⊢ (𝜑 → dom (ℝ D (𝑣 ∈ (𝑀(,)𝑁) ↦ ∫(𝑀(,)𝑣)𝐶 d𝑢)) = dom (𝑢 ∈ (𝑀(,)𝑁) ↦ 𝐶))
124	83, 56	dmmptd 6635	. . . . . . . . . . . . 13 ⊢ (𝜑 → dom (𝑢 ∈ (𝑀(,)𝑁) ↦ 𝐶) = (𝑀(,)𝑁))
125	123, 124	eqtrd 2772	. . . . . . . . . . . 12 ⊢ (𝜑 → dom (ℝ D (𝑣 ∈ (𝑀(,)𝑁) ↦ ∫(𝑀(,)𝑣)𝐶 d𝑢)) = (𝑀(,)𝑁))
126		dvcn 25897	. . . . . . . . . . . 12 ⊢ (((ℝ ⊆ ℂ ∧ (𝑣 ∈ (𝑀(,)𝑁) ↦ ∫(𝑀(,)𝑣)𝐶 d𝑢):(𝑀(,)𝑁)⟶ℂ ∧ (𝑀(,)𝑁) ⊆ ℝ) ∧ dom (ℝ D (𝑣 ∈ (𝑀(,)𝑁) ↦ ∫(𝑀(,)𝑣)𝐶 d𝑢)) = (𝑀(,)𝑁)) → (𝑣 ∈ (𝑀(,)𝑁) ↦ ∫(𝑀(,)𝑣)𝐶 d𝑢) ∈ ((𝑀(,)𝑁)–cn→ℂ))
127	6, 77, 78, 125, 126	syl31anc 1376	. . . . . . . . . . 11 ⊢ (𝜑 → (𝑣 ∈ (𝑀(,)𝑁) ↦ ∫(𝑀(,)𝑣)𝐶 d𝑢) ∈ ((𝑀(,)𝑁)–cn→ℂ))
128	38, 127	cncfco 24883	. . . . . . . . . 10 ⊢ (𝜑 → ((𝑣 ∈ (𝑀(,)𝑁) ↦ ∫(𝑀(,)𝑣)𝐶 d𝑢) ∘ (𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐴)) ∈ ((𝑋[,]𝑌)–cn→ℂ))
129	15, 128	eqeltrrd 2838	. . . . . . . . 9 ⊢ (𝜑 → (𝑥 ∈ (𝑋[,]𝑌) ↦ ∫(𝑀(,)𝐴)𝐶 d𝑢) ∈ ((𝑋[,]𝑌)–cn→ℂ))
130		cncff 24869	. . . . . . . . 9 ⊢ ((𝑥 ∈ (𝑋[,]𝑌) ↦ ∫(𝑀(,)𝐴)𝐶 d𝑢) ∈ ((𝑋[,]𝑌)–cn→ℂ) → (𝑥 ∈ (𝑋[,]𝑌) ↦ ∫(𝑀(,)𝐴)𝐶 d𝑢):(𝑋[,]𝑌)⟶ℂ)
131	129, 130	syl 17	. . . . . . . 8 ⊢ (𝜑 → (𝑥 ∈ (𝑋[,]𝑌) ↦ ∫(𝑀(,)𝐴)𝐶 d𝑢):(𝑋[,]𝑌)⟶ℂ)
132	131	fvmptelcdm 7057	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝑋[,]𝑌)) → ∫(𝑀(,)𝐴)𝐶 d𝑢 ∈ ℂ)
133		iccntr 24796	. . . . . . . 8 ⊢ ((𝑋 ∈ ℝ ∧ 𝑌 ∈ ℝ) → ((int‘(topGen‘ran (,)))‘(𝑋[,]𝑌)) = (𝑋(,)𝑌))
134	3, 4, 133	syl2anc 585	. . . . . . 7 ⊢ (𝜑 → ((int‘(topGen‘ran (,)))‘(𝑋[,]𝑌)) = (𝑋(,)𝑌))
135	6, 8, 132, 117, 118, 134	dvmptntr 25947	. . . . . 6 ⊢ (𝜑 → (ℝ D (𝑥 ∈ (𝑋[,]𝑌) ↦ ∫(𝑀(,)𝐴)𝐶 d𝑢)) = (ℝ D (𝑥 ∈ (𝑋(,)𝑌) ↦ ∫(𝑀(,)𝐴)𝐶 d𝑢)))
136		reelprrecn 11119	. . . . . . . 8 ⊢ ℝ ∈ {ℝ, ℂ}
137	136	a1i 11	. . . . . . 7 ⊢ (𝜑 → ℝ ∈ {ℝ, ℂ})
138		ioossicc 13375	. . . . . . . . 9 ⊢ (𝑋(,)𝑌) ⊆ (𝑋[,]𝑌)
139	138	sseli 3918	. . . . . . . 8 ⊢ (𝑥 ∈ (𝑋(,)𝑌) → 𝑥 ∈ (𝑋[,]𝑌))
140	139, 9	sylan2 594	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝑋(,)𝑌)) → 𝐴 ∈ (𝑀(,)𝑁))
141		itgsubst.b	. . . . . . . . . . 11 ⊢ (𝜑 → (𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐵) ∈ (((𝑋(,)𝑌)–cn→ℂ) ∩ 𝐿¹))
142		elin 3906	. . . . . . . . . . 11 ⊢ ((𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐵) ∈ (((𝑋(,)𝑌)–cn→ℂ) ∩ 𝐿¹) ↔ ((𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐵) ∈ ((𝑋(,)𝑌)–cn→ℂ) ∧ (𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐵) ∈ 𝐿¹))
143	141, 142	sylib 218	. . . . . . . . . 10 ⊢ (𝜑 → ((𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐵) ∈ ((𝑋(,)𝑌)–cn→ℂ) ∧ (𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐵) ∈ 𝐿¹))
144	143	simpld 494	. . . . . . . . 9 ⊢ (𝜑 → (𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐵) ∈ ((𝑋(,)𝑌)–cn→ℂ))
145		cncff 24869	. . . . . . . . 9 ⊢ ((𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐵) ∈ ((𝑋(,)𝑌)–cn→ℂ) → (𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐵):(𝑋(,)𝑌)⟶ℂ)
146	144, 145	syl 17	. . . . . . . 8 ⊢ (𝜑 → (𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐵):(𝑋(,)𝑌)⟶ℂ)
147	146	fvmptelcdm 7057	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝑋(,)𝑌)) → 𝐵 ∈ ℂ)
148	56	fmpttd 7059	. . . . . . . . 9 ⊢ (𝜑 → (𝑢 ∈ (𝑀(,)𝑁) ↦ 𝐶):(𝑀(,)𝑁)⟶ℂ)
149		nfcv 2899	. . . . . . . . . . 11 ⊢ Ⅎ𝑣𝐶
150		nfcsb1v 3862	. . . . . . . . . . 11 ⊢ Ⅎ𝑢⦋𝑣 / 𝑢⦌𝐶
151		csbeq1a 3852	. . . . . . . . . . 11 ⊢ (𝑢 = 𝑣 → 𝐶 = ⦋𝑣 / 𝑢⦌𝐶)
152	149, 150, 151	cbvmpt 5188	. . . . . . . . . 10 ⊢ (𝑢 ∈ (𝑀(,)𝑁) ↦ 𝐶) = (𝑣 ∈ (𝑀(,)𝑁) ↦ ⦋𝑣 / 𝑢⦌𝐶)
153	152	fmpt 7054	. . . . . . . . 9 ⊢ (∀𝑣 ∈ (𝑀(,)𝑁)⦋𝑣 / 𝑢⦌𝐶 ∈ ℂ ↔ (𝑢 ∈ (𝑀(,)𝑁) ↦ 𝐶):(𝑀(,)𝑁)⟶ℂ)
154	148, 153	sylibr 234	. . . . . . . 8 ⊢ (𝜑 → ∀𝑣 ∈ (𝑀(,)𝑁)⦋𝑣 / 𝑢⦌𝐶 ∈ ℂ)
155	154	r19.21bi 3230	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑣 ∈ (𝑀(,)𝑁)) → ⦋𝑣 / 𝑢⦌𝐶 ∈ ℂ)
156	31, 5	sstri 3932	. . . . . . . . . 10 ⊢ (𝑍(,)𝑊) ⊆ ℂ
157		cncff 24869	. . . . . . . . . . . 12 ⊢ ((𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐴) ∈ ((𝑋[,]𝑌)–cn→(𝑍(,)𝑊)) → (𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐴):(𝑋[,]𝑌)⟶(𝑍(,)𝑊))
158	35, 157	syl 17	. . . . . . . . . . 11 ⊢ (𝜑 → (𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐴):(𝑋[,]𝑌)⟶(𝑍(,)𝑊))
159	158	fvmptelcdm 7057	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝑋[,]𝑌)) → 𝐴 ∈ (𝑍(,)𝑊))
160	156, 159	sselid 3920	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝑋[,]𝑌)) → 𝐴 ∈ ℂ)
161	6, 8, 160, 117, 118, 134	dvmptntr 25947	. . . . . . . 8 ⊢ (𝜑 → (ℝ D (𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐴)) = (ℝ D (𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐴)))
162		itgsubst.da	. . . . . . . 8 ⊢ (𝜑 → (ℝ D (𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐴)) = (𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐵))
163	161, 162	eqtr3d 2774	. . . . . . 7 ⊢ (𝜑 → (ℝ D (𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐴)) = (𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐵))
164	122, 152	eqtrdi 2788	. . . . . . 7 ⊢ (𝜑 → (ℝ D (𝑣 ∈ (𝑀(,)𝑁) ↦ ∫(𝑀(,)𝑣)𝐶 d𝑢)) = (𝑣 ∈ (𝑀(,)𝑁) ↦ ⦋𝑣 / 𝑢⦌𝐶))
165		csbeq1 3841	. . . . . . 7 ⊢ (𝑣 = 𝐴 → ⦋𝑣 / 𝑢⦌𝐶 = ⦋𝐴 / 𝑢⦌𝐶)
166	137, 137, 140, 147, 76, 155, 163, 164, 14, 165	dvmptco 25948	. . . . . 6 ⊢ (𝜑 → (ℝ D (𝑥 ∈ (𝑋(,)𝑌) ↦ ∫(𝑀(,)𝐴)𝐶 d𝑢)) = (𝑥 ∈ (𝑋(,)𝑌) ↦ (⦋𝐴 / 𝑢⦌𝐶 · 𝐵)))
167		nfcvd 2900	. . . . . . . . . 10 ⊢ (𝐴 ∈ (𝑀(,)𝑁) → Ⅎ𝑢𝐸)
168		itgsubst.e	. . . . . . . . . 10 ⊢ (𝑢 = 𝐴 → 𝐶 = 𝐸)
169	167, 168	csbiegf 3871	. . . . . . . . 9 ⊢ (𝐴 ∈ (𝑀(,)𝑁) → ⦋𝐴 / 𝑢⦌𝐶 = 𝐸)
170	140, 169	syl 17	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝑋(,)𝑌)) → ⦋𝐴 / 𝑢⦌𝐶 = 𝐸)
171	170	oveq1d 7373	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝑋(,)𝑌)) → (⦋𝐴 / 𝑢⦌𝐶 · 𝐵) = (𝐸 · 𝐵))
172	171	mpteq2dva 5179	. . . . . 6 ⊢ (𝜑 → (𝑥 ∈ (𝑋(,)𝑌) ↦ (⦋𝐴 / 𝑢⦌𝐶 · 𝐵)) = (𝑥 ∈ (𝑋(,)𝑌) ↦ (𝐸 · 𝐵)))
173	135, 166, 172	3eqtrd 2776	. . . . 5 ⊢ (𝜑 → (ℝ D (𝑥 ∈ (𝑋[,]𝑌) ↦ ∫(𝑀(,)𝐴)𝐶 d𝑢)) = (𝑥 ∈ (𝑋(,)𝑌) ↦ (𝐸 · 𝐵)))
174		resmpt 5994	. . . . . . . 8 ⊢ ((𝑋(,)𝑌) ⊆ (𝑋[,]𝑌) → ((𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐸) ↾ (𝑋(,)𝑌)) = (𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐸))
175	138, 174	ax-mp 5	. . . . . . 7 ⊢ ((𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐸) ↾ (𝑋(,)𝑌)) = (𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐸)
176		eqidd 2738	. . . . . . . . . 10 ⊢ (𝜑 → (𝑢 ∈ (𝑍(,)𝑊) ↦ 𝐶) = (𝑢 ∈ (𝑍(,)𝑊) ↦ 𝐶))
177	159, 10, 176, 168	fmptco 7074	. . . . . . . . 9 ⊢ (𝜑 → ((𝑢 ∈ (𝑍(,)𝑊) ↦ 𝐶) ∘ (𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐴)) = (𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐸))
178	35, 52	cncfco 24883	. . . . . . . . 9 ⊢ (𝜑 → ((𝑢 ∈ (𝑍(,)𝑊) ↦ 𝐶) ∘ (𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐴)) ∈ ((𝑋[,]𝑌)–cn→ℂ))
179	177, 178	eqeltrrd 2838	. . . . . . . 8 ⊢ (𝜑 → (𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐸) ∈ ((𝑋[,]𝑌)–cn→ℂ))
180		rescncf 24873	. . . . . . . 8 ⊢ ((𝑋(,)𝑌) ⊆ (𝑋[,]𝑌) → ((𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐸) ∈ ((𝑋[,]𝑌)–cn→ℂ) → ((𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐸) ↾ (𝑋(,)𝑌)) ∈ ((𝑋(,)𝑌)–cn→ℂ)))
181	138, 179, 180	mpsyl 68	. . . . . . 7 ⊢ (𝜑 → ((𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐸) ↾ (𝑋(,)𝑌)) ∈ ((𝑋(,)𝑌)–cn→ℂ))
182	175, 181	eqeltrrid 2842	. . . . . 6 ⊢ (𝜑 → (𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐸) ∈ ((𝑋(,)𝑌)–cn→ℂ))
183	182, 144	mulcncf 25422	. . . . 5 ⊢ (𝜑 → (𝑥 ∈ (𝑋(,)𝑌) ↦ (𝐸 · 𝐵)) ∈ ((𝑋(,)𝑌)–cn→ℂ))
184	173, 183	eqeltrd 2837	. . . 4 ⊢ (𝜑 → (ℝ D (𝑥 ∈ (𝑋[,]𝑌) ↦ ∫(𝑀(,)𝐴)𝐶 d𝑢)) ∈ ((𝑋(,)𝑌)–cn→ℂ))
185		ioombl 25541	. . . . . . . 8 ⊢ (𝑋(,)𝑌) ∈ dom vol
186	185	a1i 11	. . . . . . 7 ⊢ (𝜑 → (𝑋(,)𝑌) ∈ dom vol)
187		fco 6684	. . . . . . . . . . 11 ⊢ (((𝑢 ∈ (𝑍(,)𝑊) ↦ 𝐶):(𝑍(,)𝑊)⟶ℂ ∧ (𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐴):(𝑋[,]𝑌)⟶(𝑍(,)𝑊)) → ((𝑢 ∈ (𝑍(,)𝑊) ↦ 𝐶) ∘ (𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐴)):(𝑋[,]𝑌)⟶ℂ)
188	54, 158, 187	syl2anc 585	. . . . . . . . . 10 ⊢ (𝜑 → ((𝑢 ∈ (𝑍(,)𝑊) ↦ 𝐶) ∘ (𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐴)):(𝑋[,]𝑌)⟶ℂ)
189	177	feq1d 6642	. . . . . . . . . 10 ⊢ (𝜑 → (((𝑢 ∈ (𝑍(,)𝑊) ↦ 𝐶) ∘ (𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐴)):(𝑋[,]𝑌)⟶ℂ ↔ (𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐸):(𝑋[,]𝑌)⟶ℂ))
190	188, 189	mpbid 232	. . . . . . . . 9 ⊢ (𝜑 → (𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐸):(𝑋[,]𝑌)⟶ℂ)
191	190	fvmptelcdm 7057	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝑋[,]𝑌)) → 𝐸 ∈ ℂ)
192	139, 191	sylan2 594	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝑋(,)𝑌)) → 𝐸 ∈ ℂ)
193		eqidd 2738	. . . . . . 7 ⊢ (𝜑 → (𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐸) = (𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐸))
194		eqidd 2738	. . . . . . 7 ⊢ (𝜑 → (𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐵) = (𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐵))
195	186, 192, 147, 193, 194	offval2 7642	. . . . . 6 ⊢ (𝜑 → ((𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐸) ∘_f · (𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐵)) = (𝑥 ∈ (𝑋(,)𝑌) ↦ (𝐸 · 𝐵)))
196	173, 195	eqtr4d 2775	. . . . 5 ⊢ (𝜑 → (ℝ D (𝑥 ∈ (𝑋[,]𝑌) ↦ ∫(𝑀(,)𝐴)𝐶 d𝑢)) = ((𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐸) ∘_f · (𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐵)))
197	138	a1i 11	. . . . . . . 8 ⊢ (𝜑 → (𝑋(,)𝑌) ⊆ (𝑋[,]𝑌))
198		cniccibl 25817	. . . . . . . . 9 ⊢ ((𝑋 ∈ ℝ ∧ 𝑌 ∈ ℝ ∧ (𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐸) ∈ ((𝑋[,]𝑌)–cn→ℂ)) → (𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐸) ∈ 𝐿¹)
199	3, 4, 179, 198	syl3anc 1374	. . . . . . . 8 ⊢ (𝜑 → (𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐸) ∈ 𝐿¹)
200	197, 186, 191, 199	iblss 25781	. . . . . . 7 ⊢ (𝜑 → (𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐸) ∈ 𝐿¹)
201		iblmbf 25743	. . . . . . 7 ⊢ ((𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐸) ∈ 𝐿¹ → (𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐸) ∈ MblFn)
202	200, 201	syl 17	. . . . . 6 ⊢ (𝜑 → (𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐸) ∈ MblFn)
203	143	simprd 495	. . . . . 6 ⊢ (𝜑 → (𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐵) ∈ 𝐿¹)
204		cniccbdd 25437	. . . . . . . 8 ⊢ ((𝑋 ∈ ℝ ∧ 𝑌 ∈ ℝ ∧ (𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐸) ∈ ((𝑋[,]𝑌)–cn→ℂ)) → ∃𝑦 ∈ ℝ ∀𝑧 ∈ (𝑋[,]𝑌)(abs‘((𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐸)‘𝑧)) ≤ 𝑦)
205	3, 4, 179, 204	syl3anc 1374	. . . . . . 7 ⊢ (𝜑 → ∃𝑦 ∈ ℝ ∀𝑧 ∈ (𝑋[,]𝑌)(abs‘((𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐸)‘𝑧)) ≤ 𝑦)
206		ssralv 3991	. . . . . . . . . 10 ⊢ ((𝑋(,)𝑌) ⊆ (𝑋[,]𝑌) → (∀𝑧 ∈ (𝑋[,]𝑌)(abs‘((𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐸)‘𝑧)) ≤ 𝑦 → ∀𝑧 ∈ (𝑋(,)𝑌)(abs‘((𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐸)‘𝑧)) ≤ 𝑦))
207	138, 206	ax-mp 5	. . . . . . . . 9 ⊢ (∀𝑧 ∈ (𝑋[,]𝑌)(abs‘((𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐸)‘𝑧)) ≤ 𝑦 → ∀𝑧 ∈ (𝑋(,)𝑌)(abs‘((𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐸)‘𝑧)) ≤ 𝑦)
208		eqid 2737	. . . . . . . . . . . 12 ⊢ (𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐸) = (𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐸)
209	208, 192	dmmptd 6635	. . . . . . . . . . 11 ⊢ (𝜑 → dom (𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐸) = (𝑋(,)𝑌))
210	209	raleqdv 3296	. . . . . . . . . 10 ⊢ (𝜑 → (∀𝑧 ∈ dom (𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐸)(abs‘((𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐸)‘𝑧)) ≤ 𝑦 ↔ ∀𝑧 ∈ (𝑋(,)𝑌)(abs‘((𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐸)‘𝑧)) ≤ 𝑦))
211	175	fveq1i 6833	. . . . . . . . . . . . . 14 ⊢ (((𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐸) ↾ (𝑋(,)𝑌))‘𝑧) = ((𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐸)‘𝑧)
212		fvres 6851	. . . . . . . . . . . . . 14 ⊢ (𝑧 ∈ (𝑋(,)𝑌) → (((𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐸) ↾ (𝑋(,)𝑌))‘𝑧) = ((𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐸)‘𝑧))
213	211, 212	eqtr3id 2786	. . . . . . . . . . . . 13 ⊢ (𝑧 ∈ (𝑋(,)𝑌) → ((𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐸)‘𝑧) = ((𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐸)‘𝑧))
214	213	fveq2d 6836	. . . . . . . . . . . 12 ⊢ (𝑧 ∈ (𝑋(,)𝑌) → (abs‘((𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐸)‘𝑧)) = (abs‘((𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐸)‘𝑧)))
215	214	breq1d 5096	. . . . . . . . . . 11 ⊢ (𝑧 ∈ (𝑋(,)𝑌) → ((abs‘((𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐸)‘𝑧)) ≤ 𝑦 ↔ (abs‘((𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐸)‘𝑧)) ≤ 𝑦))
216	215	ralbiia 3082	. . . . . . . . . 10 ⊢ (∀𝑧 ∈ (𝑋(,)𝑌)(abs‘((𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐸)‘𝑧)) ≤ 𝑦 ↔ ∀𝑧 ∈ (𝑋(,)𝑌)(abs‘((𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐸)‘𝑧)) ≤ 𝑦)
217	210, 216	bitr2di 288	. . . . . . . . 9 ⊢ (𝜑 → (∀𝑧 ∈ (𝑋(,)𝑌)(abs‘((𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐸)‘𝑧)) ≤ 𝑦 ↔ ∀𝑧 ∈ dom (𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐸)(abs‘((𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐸)‘𝑧)) ≤ 𝑦))
218	207, 217	imbitrid 244	. . . . . . . 8 ⊢ (𝜑 → (∀𝑧 ∈ (𝑋[,]𝑌)(abs‘((𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐸)‘𝑧)) ≤ 𝑦 → ∀𝑧 ∈ dom (𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐸)(abs‘((𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐸)‘𝑧)) ≤ 𝑦))
219	218	reximdv 3153	. . . . . . 7 ⊢ (𝜑 → (∃𝑦 ∈ ℝ ∀𝑧 ∈ (𝑋[,]𝑌)(abs‘((𝑥 ∈ (𝑋[,]𝑌) ↦ 𝐸)‘𝑧)) ≤ 𝑦 → ∃𝑦 ∈ ℝ ∀𝑧 ∈ dom (𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐸)(abs‘((𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐸)‘𝑧)) ≤ 𝑦))
220	205, 219	mpd 15	. . . . . 6 ⊢ (𝜑 → ∃𝑦 ∈ ℝ ∀𝑧 ∈ dom (𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐸)(abs‘((𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐸)‘𝑧)) ≤ 𝑦)
221		bddmulibl 25815	. . . . . 6 ⊢ (((𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐸) ∈ MblFn ∧ (𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐵) ∈ 𝐿¹ ∧ ∃𝑦 ∈ ℝ ∀𝑧 ∈ dom (𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐸)(abs‘((𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐸)‘𝑧)) ≤ 𝑦) → ((𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐸) ∘_f · (𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐵)) ∈ 𝐿¹)
222	202, 203, 220, 221	syl3anc 1374	. . . . 5 ⊢ (𝜑 → ((𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐸) ∘_f · (𝑥 ∈ (𝑋(,)𝑌) ↦ 𝐵)) ∈ 𝐿¹)
223	196, 222	eqeltrd 2837	. . . 4 ⊢ (𝜑 → (ℝ D (𝑥 ∈ (𝑋[,]𝑌) ↦ ∫(𝑀(,)𝐴)𝐶 d𝑢)) ∈ 𝐿¹)
224	3, 4, 1, 184, 223, 129	ftc2 26023	. . 3 ⊢ (𝜑 → ∫(𝑋(,)𝑌)((ℝ D (𝑥 ∈ (𝑋[,]𝑌) ↦ ∫(𝑀(,)𝐴)𝐶 d𝑢))‘𝑡) d𝑡 = (((𝑥 ∈ (𝑋[,]𝑌) ↦ ∫(𝑀(,)𝐴)𝐶 d𝑢)‘𝑌) − ((𝑥 ∈ (𝑋[,]𝑌) ↦ ∫(𝑀(,)𝐴)𝐶 d𝑢)‘𝑋)))
225		fveq2 6832	. . . . 5 ⊢ (𝑡 = 𝑥 → ((ℝ D (𝑥 ∈ (𝑋[,]𝑌) ↦ ∫(𝑀(,)𝐴)𝐶 d𝑢))‘𝑡) = ((ℝ D (𝑥 ∈ (𝑋[,]𝑌) ↦ ∫(𝑀(,)𝐴)𝐶 d𝑢))‘𝑥))
226		nfcv 2899	. . . . . . 7 ⊢ Ⅎ𝑥ℝ
227		nfcv 2899	. . . . . . 7 ⊢ Ⅎ𝑥 D
228		nfmpt1 5185	. . . . . . 7 ⊢ Ⅎ𝑥(𝑥 ∈ (𝑋[,]𝑌) ↦ ∫(𝑀(,)𝐴)𝐶 d𝑢)
229	226, 227, 228	nfov 7388	. . . . . 6 ⊢ Ⅎ𝑥(ℝ D (𝑥 ∈ (𝑋[,]𝑌) ↦ ∫(𝑀(,)𝐴)𝐶 d𝑢))
230		nfcv 2899	. . . . . 6 ⊢ Ⅎ𝑥𝑡
231	229, 230	nffv 6842	. . . . 5 ⊢ Ⅎ𝑥((ℝ D (𝑥 ∈ (𝑋[,]𝑌) ↦ ∫(𝑀(,)𝐴)𝐶 d𝑢))‘𝑡)
232		nfcv 2899	. . . . 5 ⊢ Ⅎ𝑡((ℝ D (𝑥 ∈ (𝑋[,]𝑌) ↦ ∫(𝑀(,)𝐴)𝐶 d𝑢))‘𝑥)
233	225, 231, 232	cbvitg 25752	. . . 4 ⊢ ∫(𝑋(,)𝑌)((ℝ D (𝑥 ∈ (𝑋[,]𝑌) ↦ ∫(𝑀(,)𝐴)𝐶 d𝑢))‘𝑡) d𝑡 = ∫(𝑋(,)𝑌)((ℝ D (𝑥 ∈ (𝑋[,]𝑌) ↦ ∫(𝑀(,)𝐴)𝐶 d𝑢))‘𝑥) d𝑥
234	173	fveq1d 6834	. . . . . 6 ⊢ (𝜑 → ((ℝ D (𝑥 ∈ (𝑋[,]𝑌) ↦ ∫(𝑀(,)𝐴)𝐶 d𝑢))‘𝑥) = ((𝑥 ∈ (𝑋(,)𝑌) ↦ (𝐸 · 𝐵))‘𝑥))
235		ovex 7391	. . . . . . 7 ⊢ (𝐸 · 𝐵) ∈ V
236		eqid 2737	. . . . . . . 8 ⊢ (𝑥 ∈ (𝑋(,)𝑌) ↦ (𝐸 · 𝐵)) = (𝑥 ∈ (𝑋(,)𝑌) ↦ (𝐸 · 𝐵))
237	236	fvmpt2 6951	. . . . . . 7 ⊢ ((𝑥 ∈ (𝑋(,)𝑌) ∧ (𝐸 · 𝐵) ∈ V) → ((𝑥 ∈ (𝑋(,)𝑌) ↦ (𝐸 · 𝐵))‘𝑥) = (𝐸 · 𝐵))
238	235, 237	mpan2 692	. . . . . 6 ⊢ (𝑥 ∈ (𝑋(,)𝑌) → ((𝑥 ∈ (𝑋(,)𝑌) ↦ (𝐸 · 𝐵))‘𝑥) = (𝐸 · 𝐵))
239	234, 238	sylan9eq 2792	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝑋(,)𝑌)) → ((ℝ D (𝑥 ∈ (𝑋[,]𝑌) ↦ ∫(𝑀(,)𝐴)𝐶 d𝑢))‘𝑥) = (𝐸 · 𝐵))
240	239	itgeq2dv 25758	. . . 4 ⊢ (𝜑 → ∫(𝑋(,)𝑌)((ℝ D (𝑥 ∈ (𝑋[,]𝑌) ↦ ∫(𝑀(,)𝐴)𝐶 d𝑢))‘𝑥) d𝑥 = ∫(𝑋(,)𝑌)(𝐸 · 𝐵) d𝑥)
241	233, 240	eqtrid 2784	. . 3 ⊢ (𝜑 → ∫(𝑋(,)𝑌)((ℝ D (𝑥 ∈ (𝑋[,]𝑌) ↦ ∫(𝑀(,)𝐴)𝐶 d𝑢))‘𝑡) d𝑡 = ∫(𝑋(,)𝑌)(𝐸 · 𝐵) d𝑥)
242	17, 9	sselid 3920	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝑋[,]𝑌)) → 𝐴 ∈ (𝑀[,]𝑁))
243		elicc2 13353	. . . . . . . . . . . . 13 ⊢ ((𝑀 ∈ ℝ ∧ 𝑁 ∈ ℝ) → (𝐴 ∈ (𝑀[,]𝑁) ↔ (𝐴 ∈ ℝ ∧ 𝑀 ≤ 𝐴 ∧ 𝐴 ≤ 𝑁)))
244	43, 40, 243	syl2anc 585	. . . . . . . . . . . 12 ⊢ (𝜑 → (𝐴 ∈ (𝑀[,]𝑁) ↔ (𝐴 ∈ ℝ ∧ 𝑀 ≤ 𝐴 ∧ 𝐴 ≤ 𝑁)))
245	244	adantr 480	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝑋[,]𝑌)) → (𝐴 ∈ (𝑀[,]𝑁) ↔ (𝐴 ∈ ℝ ∧ 𝑀 ≤ 𝐴 ∧ 𝐴 ≤ 𝑁)))
246	242, 245	mpbid 232	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝑋[,]𝑌)) → (𝐴 ∈ ℝ ∧ 𝑀 ≤ 𝐴 ∧ 𝐴 ≤ 𝑁))
247	246	simp2d 1144	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝑋[,]𝑌)) → 𝑀 ≤ 𝐴)
248	247	ditgpos 25832	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝑋[,]𝑌)) → ⨜[𝑀 → 𝐴]𝐶 d𝑢 = ∫(𝑀(,)𝐴)𝐶 d𝑢)
249	248	mpteq2dva 5179	. . . . . . 7 ⊢ (𝜑 → (𝑥 ∈ (𝑋[,]𝑌) ↦ ⨜[𝑀 → 𝐴]𝐶 d𝑢) = (𝑥 ∈ (𝑋[,]𝑌) ↦ ∫(𝑀(,)𝐴)𝐶 d𝑢))
250	249	fveq1d 6834	. . . . . 6 ⊢ (𝜑 → ((𝑥 ∈ (𝑋[,]𝑌) ↦ ⨜[𝑀 → 𝐴]𝐶 d𝑢)‘𝑌) = ((𝑥 ∈ (𝑋[,]𝑌) ↦ ∫(𝑀(,)𝐴)𝐶 d𝑢)‘𝑌))
251		ubicc2 13407	. . . . . . . 8 ⊢ ((𝑋 ∈ ℝ^* ∧ 𝑌 ∈ ℝ^* ∧ 𝑋 ≤ 𝑌) → 𝑌 ∈ (𝑋[,]𝑌))
252	91, 92, 1, 251	syl3anc 1374	. . . . . . 7 ⊢ (𝜑 → 𝑌 ∈ (𝑋[,]𝑌))
253		itgsubst.l	. . . . . . . . 9 ⊢ (𝑥 = 𝑌 → 𝐴 = 𝐿)
254		ditgeq2 25825	. . . . . . . . 9 ⊢ (𝐴 = 𝐿 → ⨜[𝑀 → 𝐴]𝐶 d𝑢 = ⨜[𝑀 → 𝐿]𝐶 d𝑢)
255	253, 254	syl 17	. . . . . . . 8 ⊢ (𝑥 = 𝑌 → ⨜[𝑀 → 𝐴]𝐶 d𝑢 = ⨜[𝑀 → 𝐿]𝐶 d𝑢)
256		eqid 2737	. . . . . . . 8 ⊢ (𝑥 ∈ (𝑋[,]𝑌) ↦ ⨜[𝑀 → 𝐴]𝐶 d𝑢) = (𝑥 ∈ (𝑋[,]𝑌) ↦ ⨜[𝑀 → 𝐴]𝐶 d𝑢)
257		ditgex 25828	. . . . . . . 8 ⊢ ⨜[𝑀 → 𝐿]𝐶 d𝑢 ∈ V
258	255, 256, 257	fvmpt 6939	. . . . . . 7 ⊢ (𝑌 ∈ (𝑋[,]𝑌) → ((𝑥 ∈ (𝑋[,]𝑌) ↦ ⨜[𝑀 → 𝐴]𝐶 d𝑢)‘𝑌) = ⨜[𝑀 → 𝐿]𝐶 d𝑢)
259	252, 258	syl 17	. . . . . 6 ⊢ (𝜑 → ((𝑥 ∈ (𝑋[,]𝑌) ↦ ⨜[𝑀 → 𝐴]𝐶 d𝑢)‘𝑌) = ⨜[𝑀 → 𝐿]𝐶 d𝑢)
260	250, 259	eqtr3d 2774	. . . . 5 ⊢ (𝜑 → ((𝑥 ∈ (𝑋[,]𝑌) ↦ ∫(𝑀(,)𝐴)𝐶 d𝑢)‘𝑌) = ⨜[𝑀 → 𝐿]𝐶 d𝑢)
261	249	fveq1d 6834	. . . . . 6 ⊢ (𝜑 → ((𝑥 ∈ (𝑋[,]𝑌) ↦ ⨜[𝑀 → 𝐴]𝐶 d𝑢)‘𝑋) = ((𝑥 ∈ (𝑋[,]𝑌) ↦ ∫(𝑀(,)𝐴)𝐶 d𝑢)‘𝑋))
262		itgsubst.k	. . . . . . . . 9 ⊢ (𝑥 = 𝑋 → 𝐴 = 𝐾)
263		ditgeq2 25825	. . . . . . . . 9 ⊢ (𝐴 = 𝐾 → ⨜[𝑀 → 𝐴]𝐶 d𝑢 = ⨜[𝑀 → 𝐾]𝐶 d𝑢)
264	262, 263	syl 17	. . . . . . . 8 ⊢ (𝑥 = 𝑋 → ⨜[𝑀 → 𝐴]𝐶 d𝑢 = ⨜[𝑀 → 𝐾]𝐶 d𝑢)
265		ditgex 25828	. . . . . . . 8 ⊢ ⨜[𝑀 → 𝐾]𝐶 d𝑢 ∈ V
266	264, 256, 265	fvmpt 6939	. . . . . . 7 ⊢ (𝑋 ∈ (𝑋[,]𝑌) → ((𝑥 ∈ (𝑋[,]𝑌) ↦ ⨜[𝑀 → 𝐴]𝐶 d𝑢)‘𝑋) = ⨜[𝑀 → 𝐾]𝐶 d𝑢)
267	94, 266	syl 17	. . . . . 6 ⊢ (𝜑 → ((𝑥 ∈ (𝑋[,]𝑌) ↦ ⨜[𝑀 → 𝐴]𝐶 d𝑢)‘𝑋) = ⨜[𝑀 → 𝐾]𝐶 d𝑢)
268	261, 267	eqtr3d 2774	. . . . 5 ⊢ (𝜑 → ((𝑥 ∈ (𝑋[,]𝑌) ↦ ∫(𝑀(,)𝐴)𝐶 d𝑢)‘𝑋) = ⨜[𝑀 → 𝐾]𝐶 d𝑢)
269	260, 268	oveq12d 7376	. . . 4 ⊢ (𝜑 → (((𝑥 ∈ (𝑋[,]𝑌) ↦ ∫(𝑀(,)𝐴)𝐶 d𝑢)‘𝑌) − ((𝑥 ∈ (𝑋[,]𝑌) ↦ ∫(𝑀(,)𝐴)𝐶 d𝑢)‘𝑋)) = (⨜[𝑀 → 𝐿]𝐶 d𝑢 − ⨜[𝑀 → 𝐾]𝐶 d𝑢))
270		lbicc2 13406	. . . . . . 7 ⊢ ((𝑀 ∈ ℝ^* ∧ 𝑁 ∈ ℝ^* ∧ 𝑀 ≤ 𝑁) → 𝑀 ∈ (𝑀[,]𝑁))
271	103, 41, 109, 270	syl3anc 1374	. . . . . 6 ⊢ (𝜑 → 𝑀 ∈ (𝑀[,]𝑁))
272	262	eleq1d 2822	. . . . . . 7 ⊢ (𝑥 = 𝑋 → (𝐴 ∈ (𝑀[,]𝑁) ↔ 𝐾 ∈ (𝑀[,]𝑁)))
273	242	ralrimiva 3130	. . . . . . 7 ⊢ (𝜑 → ∀𝑥 ∈ (𝑋[,]𝑌)𝐴 ∈ (𝑀[,]𝑁))
274	272, 273, 94	rspcdva 3566	. . . . . 6 ⊢ (𝜑 → 𝐾 ∈ (𝑀[,]𝑁))
275	253	eleq1d 2822	. . . . . . 7 ⊢ (𝑥 = 𝑌 → (𝐴 ∈ (𝑀[,]𝑁) ↔ 𝐿 ∈ (𝑀[,]𝑁)))
276	275, 273, 252	rspcdva 3566	. . . . . 6 ⊢ (𝜑 → 𝐿 ∈ (𝑀[,]𝑁))
277	43, 40, 271, 274, 276, 56, 72	ditgsplit 25837	. . . . 5 ⊢ (𝜑 → ⨜[𝑀 → 𝐿]𝐶 d𝑢 = (⨜[𝑀 → 𝐾]𝐶 d𝑢 + ⨜[𝐾 → 𝐿]𝐶 d𝑢))
278	277	oveq1d 7373	. . . 4 ⊢ (𝜑 → (⨜[𝑀 → 𝐿]𝐶 d𝑢 − ⨜[𝑀 → 𝐾]𝐶 d𝑢) = ((⨜[𝑀 → 𝐾]𝐶 d𝑢 + ⨜[𝐾 → 𝐿]𝐶 d𝑢) − ⨜[𝑀 → 𝐾]𝐶 d𝑢))
279	43, 40, 271, 274, 56, 72	ditgcl 25834	. . . . 5 ⊢ (𝜑 → ⨜[𝑀 → 𝐾]𝐶 d𝑢 ∈ ℂ)
280	43, 40, 274, 276, 56, 72	ditgcl 25834	. . . . 5 ⊢ (𝜑 → ⨜[𝐾 → 𝐿]𝐶 d𝑢 ∈ ℂ)
281	279, 280	pncan2d 11496	. . . 4 ⊢ (𝜑 → ((⨜[𝑀 → 𝐾]𝐶 d𝑢 + ⨜[𝐾 → 𝐿]𝐶 d𝑢) − ⨜[𝑀 → 𝐾]𝐶 d𝑢) = ⨜[𝐾 → 𝐿]𝐶 d𝑢)
282	269, 278, 281	3eqtrd 2776	. . 3 ⊢ (𝜑 → (((𝑥 ∈ (𝑋[,]𝑌) ↦ ∫(𝑀(,)𝐴)𝐶 d𝑢)‘𝑌) − ((𝑥 ∈ (𝑋[,]𝑌) ↦ ∫(𝑀(,)𝐴)𝐶 d𝑢)‘𝑋)) = ⨜[𝐾 → 𝐿]𝐶 d𝑢)
283	224, 241, 282	3eqtr3d 2780	. 2 ⊢ (𝜑 → ∫(𝑋(,)𝑌)(𝐸 · 𝐵) d𝑥 = ⨜[𝐾 → 𝐿]𝐶 d𝑢)
284	2, 283	eqtr2d 2773	1 ⊢ (𝜑 → ⨜[𝐾 → 𝐿]𝐶 d𝑢 = ⨜[𝑋 → 𝑌](𝐸 · 𝐵) d𝑥)

Colors of variables: wff setvar class

Syntax hints: ¬ wn 3 → wi 4 ↔ wb 206 ∧ wa 395 ∧ w3a 1087 = wceq 1542 ∈ wcel 2114 ∀wral 3052 ∃wrex 3062 Vcvv 3430 ⦋csb 3838 ∩ cin 3889 ⊆ wss 3890 ∅c0 4274 {cpr 4570 class class class wbr 5086 ↦ cmpt 5167 dom cdm 5622 ran crn 5623 ↾ cres 5624 ∘ ccom 5626 ⟶wf 6486 ‘cfv 6490 (class class class)co 7358 ∘_f cof 7620 ℂcc 11025 ℝcr 11026 + caddc 11030 · cmul 11032 ℝ^*cxr 11167 < clt 11168 ≤ cle 11169 − cmin 11366 (,)cioo 13287 [,]cicc 13290 abscabs 15185 TopOpenctopn 17373 topGenctg 17389 ℂ_fldccnfld 21342 intcnt 22991 –cn→ccncf 24852 volcvol 25439 MblFncmbf 25590 𝐿¹cibl 25593 ∫citg 25594 ⨜cdit 25822 D cdv 25839

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-rep 5212 ax-sep 5231 ax-nul 5241 ax-pow 5300 ax-pr 5368 ax-un 7680 ax-inf2 9551 ax-cc 10346 ax-cnex 11083 ax-resscn 11084 ax-1cn 11085 ax-icn 11086 ax-addcl 11087 ax-addrcl 11088 ax-mulcl 11089 ax-mulrcl 11090 ax-mulcom 11091 ax-addass 11092 ax-mulass 11093 ax-distr 11094 ax-i2m1 11095 ax-1ne0 11096 ax-1rid 11097 ax-rnegex 11098 ax-rrecex 11099 ax-cnre 11100 ax-pre-lttri 11101 ax-pre-lttrn 11102 ax-pre-ltadd 11103 ax-pre-mulgt0 11104 ax-pre-sup 11105 ax-addf 11106

This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3063 df-rmo 3343 df-reu 3344 df-rab 3391 df-v 3432 df-sbc 3730 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-pss 3910 df-symdif 4194 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-tp 4573 df-op 4575 df-uni 4852 df-int 4891 df-iun 4936 df-iin 4937 df-disj 5054 df-br 5087 df-opab 5149 df-mpt 5168 df-tr 5194 df-id 5517 df-eprel 5522 df-po 5530 df-so 5531 df-fr 5575 df-se 5576 df-we 5577 df-xp 5628 df-rel 5629 df-cnv 5630 df-co 5631 df-dm 5632 df-rn 5633 df-res 5634 df-ima 5635 df-pred 6257 df-ord 6318 df-on 6319 df-lim 6320 df-suc 6321 df-iota 6446 df-fun 6492 df-fn 6493 df-f 6494 df-f1 6495 df-fo 6496 df-f1o 6497 df-fv 6498 df-isom 6499 df-riota 7315 df-ov 7361 df-oprab 7362 df-mpo 7363 df-of 7622 df-ofr 7623 df-om 7809 df-1st 7933 df-2nd 7934 df-supp 8102 df-frecs 8222 df-wrecs 8253 df-recs 8302 df-rdg 8340 df-1o 8396 df-2o 8397 df-oadd 8400 df-omul 8401 df-er 8634 df-map 8766 df-pm 8767 df-ixp 8837 df-en 8885 df-dom 8886 df-sdom 8887 df-fin 8888 df-fsupp 9266 df-fi 9315 df-sup 9346 df-inf 9347 df-oi 9416 df-dju 9814 df-card 9852 df-acn 9855 df-pnf 11170 df-mnf 11171 df-xr 11172 df-ltxr 11173 df-le 11174 df-sub 11368 df-neg 11369 df-div 11797 df-nn 12164 df-2 12233 df-3 12234 df-4 12235 df-5 12236 df-6 12237 df-7 12238 df-8 12239 df-9 12240 df-n0 12427 df-z 12514 df-dec 12634 df-uz 12778 df-q 12888 df-rp 12932 df-xneg 13052 df-xadd 13053 df-xmul 13054 df-ioo 13291 df-ioc 13292 df-ico 13293 df-icc 13294 df-fz 13451 df-fzo 13598 df-fl 13740 df-mod 13818 df-seq 13953 df-exp 14013 df-hash 14282 df-cj 15050 df-re 15051 df-im 15052 df-sqrt 15186 df-abs 15187 df-limsup 15422 df-clim 15439 df-rlim 15440 df-sum 15638 df-struct 17106 df-sets 17123 df-slot 17141 df-ndx 17153 df-base 17169 df-ress 17190 df-plusg 17222 df-mulr 17223 df-starv 17224 df-sca 17225 df-vsca 17226 df-ip 17227 df-tset 17228 df-ple 17229 df-ds 17231 df-unif 17232 df-hom 17233 df-cco 17234 df-rest 17374 df-topn 17375 df-0g 17393 df-gsum 17394 df-topgen 17395 df-pt 17396 df-prds 17399 df-xrs 17455 df-qtop 17460 df-imas 17461 df-xps 17463 df-mre 17537 df-mrc 17538 df-acs 17540 df-mgm 18597 df-sgrp 18676 df-mnd 18692 df-submnd 18741 df-mulg 19033 df-cntz 19281 df-cmn 19746 df-psmet 21334 df-xmet 21335 df-met 21336 df-bl 21337 df-mopn 21338 df-fbas 21339 df-fg 21340 df-cnfld 21343 df-top 22868 df-topon 22885 df-topsp 22907 df-bases 22920 df-cld 22993 df-ntr 22994 df-cls 22995 df-nei 23072 df-lp 23110 df-perf 23111 df-cn 23201 df-cnp 23202 df-haus 23289 df-cmp 23361 df-tx 23536 df-hmeo 23729 df-fil 23820 df-fm 23912 df-flim 23913 df-flf 23914 df-xms 24294 df-ms 24295 df-tms 24296 df-cncf 24854 df-ovol 25440 df-vol 25441 df-mbf 25595 df-itg1 25596 df-itg2 25597 df-ibl 25598 df-itg 25599 df-0p 25646 df-ditg 25823 df-limc 25842 df-dv 25843

This theorem is referenced by: itgsubst 26028

W3C validator