itgperiod - Mathbox for Glauco Siliprandi

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Theorem itgperiod 46106

Description: The integral of a periodic function, with period 𝑇 stays the same if the domain of integration is shifted. (Contributed by Glauco Siliprandi, 11-Dec-2019.)

**Hypotheses**
Ref	Expression
itgperiod.a	⊢ (𝜑 → 𝐴 ∈ ℝ)
itgperiod.b	⊢ (𝜑 → 𝐵 ∈ ℝ)
itgperiod.aleb	⊢ (𝜑 → 𝐴 ≤ 𝐵)
itgperiod.t	⊢ (𝜑 → 𝑇 ∈ ℝ⁺)
itgperiod.f	⊢ (𝜑 → 𝐹:ℝ⟶ℂ)
itgperiod.fper	⊢ ((𝜑 ∧ 𝑥 ∈ (𝐴[,]𝐵)) → (𝐹‘(𝑥 + 𝑇)) = (𝐹‘𝑥))
itgperiod.fcn	⊢ (𝜑 → (𝐹 ↾ (𝐴[,]𝐵)) ∈ ((𝐴[,]𝐵)–cn→ℂ))

**Assertion**
Ref	Expression
itgperiod	⊢ (𝜑 → ∫((𝐴 + 𝑇)[,](𝐵 + 𝑇))(𝐹‘𝑥) d𝑥 = ∫(𝐴[,]𝐵)(𝐹‘𝑥) d𝑥)

Distinct variable groups: 𝑥,𝐴 𝑥,𝐵 𝑥,𝐹 𝑥,𝑇 𝜑,𝑥

Proof of Theorem itgperiod Dummy variables 𝑤 𝑦 𝑧 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		itgperiod.a	. . . . 5 ⊢ (𝜑 → 𝐴 ∈ ℝ)
2		itgperiod.b	. . . . 5 ⊢ (𝜑 → 𝐵 ∈ ℝ)
3		itgperiod.t	. . . . . 6 ⊢ (𝜑 → 𝑇 ∈ ℝ⁺)
4	3	rpred 12938	. . . . 5 ⊢ (𝜑 → 𝑇 ∈ ℝ)
5		itgperiod.aleb	. . . . 5 ⊢ (𝜑 → 𝐴 ≤ 𝐵)
6	1, 2, 4, 5	leadd1dd 11740	. . . 4 ⊢ (𝜑 → (𝐴 + 𝑇) ≤ (𝐵 + 𝑇))
7	6	ditgpos 25787	. . 3 ⊢ (𝜑 → ⨜[(𝐴 + 𝑇) → (𝐵 + 𝑇)](𝐹‘𝑥) d𝑥 = ∫((𝐴 + 𝑇)(,)(𝐵 + 𝑇))(𝐹‘𝑥) d𝑥)
8	1, 4	readdcld 11150	. . . 4 ⊢ (𝜑 → (𝐴 + 𝑇) ∈ ℝ)
9	2, 4	readdcld 11150	. . . 4 ⊢ (𝜑 → (𝐵 + 𝑇) ∈ ℝ)
10		itgperiod.f	. . . . . 6 ⊢ (𝜑 → 𝐹:ℝ⟶ℂ)
11	10	adantr 480	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇))) → 𝐹:ℝ⟶ℂ)
12	8	adantr 480	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇))) → (𝐴 + 𝑇) ∈ ℝ)
13	9	adantr 480	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇))) → (𝐵 + 𝑇) ∈ ℝ)
14		simpr 484	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇))) → 𝑥 ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇)))
15		eliccre 45632	. . . . . 6 ⊢ (((𝐴 + 𝑇) ∈ ℝ ∧ (𝐵 + 𝑇) ∈ ℝ ∧ 𝑥 ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇))) → 𝑥 ∈ ℝ)
16	12, 13, 14, 15	syl3anc 1373	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇))) → 𝑥 ∈ ℝ)
17	11, 16	ffvelcdmd 7026	. . . 4 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇))) → (𝐹‘𝑥) ∈ ℂ)
18	8, 9, 17	itgioo 25747	. . 3 ⊢ (𝜑 → ∫((𝐴 + 𝑇)(,)(𝐵 + 𝑇))(𝐹‘𝑥) d𝑥 = ∫((𝐴 + 𝑇)[,](𝐵 + 𝑇))(𝐹‘𝑥) d𝑥)
19	7, 18	eqtr2d 2769	. 2 ⊢ (𝜑 → ∫((𝐴 + 𝑇)[,](𝐵 + 𝑇))(𝐹‘𝑥) d𝑥 = ⨜[(𝐴 + 𝑇) → (𝐵 + 𝑇)](𝐹‘𝑥) d𝑥)
20		eqid 2733	. . . 4 ⊢ (𝑦 ∈ ℂ ↦ (𝑦 + 𝑇)) = (𝑦 ∈ ℂ ↦ (𝑦 + 𝑇))
21	4	recnd 11149	. . . . 5 ⊢ (𝜑 → 𝑇 ∈ ℂ)
22	20	addccncf 24840	. . . . 5 ⊢ (𝑇 ∈ ℂ → (𝑦 ∈ ℂ ↦ (𝑦 + 𝑇)) ∈ (ℂ–cn→ℂ))
23	21, 22	syl 17	. . . 4 ⊢ (𝜑 → (𝑦 ∈ ℂ ↦ (𝑦 + 𝑇)) ∈ (ℂ–cn→ℂ))
24	1, 2	iccssred 13338	. . . . 5 ⊢ (𝜑 → (𝐴[,]𝐵) ⊆ ℝ)
25		ax-resscn 11072	. . . . 5 ⊢ ℝ ⊆ ℂ
26	24, 25	sstrdi 3943	. . . 4 ⊢ (𝜑 → (𝐴[,]𝐵) ⊆ ℂ)
27	8, 9	iccssred 13338	. . . . 5 ⊢ (𝜑 → ((𝐴 + 𝑇)[,](𝐵 + 𝑇)) ⊆ ℝ)
28	27, 25	sstrdi 3943	. . . 4 ⊢ (𝜑 → ((𝐴 + 𝑇)[,](𝐵 + 𝑇)) ⊆ ℂ)
29	8	adantr 480	. . . . 5 ⊢ ((𝜑 ∧ 𝑦 ∈ (𝐴[,]𝐵)) → (𝐴 + 𝑇) ∈ ℝ)
30	9	adantr 480	. . . . 5 ⊢ ((𝜑 ∧ 𝑦 ∈ (𝐴[,]𝐵)) → (𝐵 + 𝑇) ∈ ℝ)
31	24	sselda 3930	. . . . . 6 ⊢ ((𝜑 ∧ 𝑦 ∈ (𝐴[,]𝐵)) → 𝑦 ∈ ℝ)
32	4	adantr 480	. . . . . 6 ⊢ ((𝜑 ∧ 𝑦 ∈ (𝐴[,]𝐵)) → 𝑇 ∈ ℝ)
33	31, 32	readdcld 11150	. . . . 5 ⊢ ((𝜑 ∧ 𝑦 ∈ (𝐴[,]𝐵)) → (𝑦 + 𝑇) ∈ ℝ)
34	1	adantr 480	. . . . . 6 ⊢ ((𝜑 ∧ 𝑦 ∈ (𝐴[,]𝐵)) → 𝐴 ∈ ℝ)
35		simpr 484	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑦 ∈ (𝐴[,]𝐵)) → 𝑦 ∈ (𝐴[,]𝐵))
36	2	adantr 480	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑦 ∈ (𝐴[,]𝐵)) → 𝐵 ∈ ℝ)
37		elicc2 13315	. . . . . . . . 9 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝑦 ∈ (𝐴[,]𝐵) ↔ (𝑦 ∈ ℝ ∧ 𝐴 ≤ 𝑦 ∧ 𝑦 ≤ 𝐵)))
38	34, 36, 37	syl2anc 584	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑦 ∈ (𝐴[,]𝐵)) → (𝑦 ∈ (𝐴[,]𝐵) ↔ (𝑦 ∈ ℝ ∧ 𝐴 ≤ 𝑦 ∧ 𝑦 ≤ 𝐵)))
39	35, 38	mpbid 232	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑦 ∈ (𝐴[,]𝐵)) → (𝑦 ∈ ℝ ∧ 𝐴 ≤ 𝑦 ∧ 𝑦 ≤ 𝐵))
40	39	simp2d 1143	. . . . . 6 ⊢ ((𝜑 ∧ 𝑦 ∈ (𝐴[,]𝐵)) → 𝐴 ≤ 𝑦)
41	34, 31, 32, 40	leadd1dd 11740	. . . . 5 ⊢ ((𝜑 ∧ 𝑦 ∈ (𝐴[,]𝐵)) → (𝐴 + 𝑇) ≤ (𝑦 + 𝑇))
42	39	simp3d 1144	. . . . . 6 ⊢ ((𝜑 ∧ 𝑦 ∈ (𝐴[,]𝐵)) → 𝑦 ≤ 𝐵)
43	31, 36, 32, 42	leadd1dd 11740	. . . . 5 ⊢ ((𝜑 ∧ 𝑦 ∈ (𝐴[,]𝐵)) → (𝑦 + 𝑇) ≤ (𝐵 + 𝑇))
44	29, 30, 33, 41, 43	eliccd 45631	. . . 4 ⊢ ((𝜑 ∧ 𝑦 ∈ (𝐴[,]𝐵)) → (𝑦 + 𝑇) ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇)))
45	20, 23, 26, 28, 44	cncfmptssg 45996	. . 3 ⊢ (𝜑 → (𝑦 ∈ (𝐴[,]𝐵) ↦ (𝑦 + 𝑇)) ∈ ((𝐴[,]𝐵)–cn→((𝐴 + 𝑇)[,](𝐵 + 𝑇))))
46		eqeq1 2737	. . . . . . . 8 ⊢ (𝑤 = 𝑥 → (𝑤 = (𝑧 + 𝑇) ↔ 𝑥 = (𝑧 + 𝑇)))
47	46	rexbidv 3157	. . . . . . 7 ⊢ (𝑤 = 𝑥 → (∃𝑧 ∈ (𝐴[,]𝐵)𝑤 = (𝑧 + 𝑇) ↔ ∃𝑧 ∈ (𝐴[,]𝐵)𝑥 = (𝑧 + 𝑇)))
48		oveq1 7361	. . . . . . . . 9 ⊢ (𝑧 = 𝑦 → (𝑧 + 𝑇) = (𝑦 + 𝑇))
49	48	eqeq2d 2744	. . . . . . . 8 ⊢ (𝑧 = 𝑦 → (𝑥 = (𝑧 + 𝑇) ↔ 𝑥 = (𝑦 + 𝑇)))
50	49	cbvrexvw 3212	. . . . . . 7 ⊢ (∃𝑧 ∈ (𝐴[,]𝐵)𝑥 = (𝑧 + 𝑇) ↔ ∃𝑦 ∈ (𝐴[,]𝐵)𝑥 = (𝑦 + 𝑇))
51	47, 50	bitrdi 287	. . . . . 6 ⊢ (𝑤 = 𝑥 → (∃𝑧 ∈ (𝐴[,]𝐵)𝑤 = (𝑧 + 𝑇) ↔ ∃𝑦 ∈ (𝐴[,]𝐵)𝑥 = (𝑦 + 𝑇)))
52	51	cbvrabv 3406	. . . . 5 ⊢ {𝑤 ∈ ℂ ∣ ∃𝑧 ∈ (𝐴[,]𝐵)𝑤 = (𝑧 + 𝑇)} = {𝑥 ∈ ℂ ∣ ∃𝑦 ∈ (𝐴[,]𝐵)𝑥 = (𝑦 + 𝑇)}
53	10	ffdmd 6688	. . . . 5 ⊢ (𝜑 → 𝐹:dom 𝐹⟶ℂ)
54		simp3 1138	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑧 ∈ (𝐴[,]𝐵) ∧ 𝑤 = (𝑧 + 𝑇)) → 𝑤 = (𝑧 + 𝑇))
55	24	sselda 3930	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑧 ∈ (𝐴[,]𝐵)) → 𝑧 ∈ ℝ)
56	4	adantr 480	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑧 ∈ (𝐴[,]𝐵)) → 𝑇 ∈ ℝ)
57	55, 56	readdcld 11150	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑧 ∈ (𝐴[,]𝐵)) → (𝑧 + 𝑇) ∈ ℝ)
58	57	3adant3 1132	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑧 ∈ (𝐴[,]𝐵) ∧ 𝑤 = (𝑧 + 𝑇)) → (𝑧 + 𝑇) ∈ ℝ)
59	54, 58	eqeltrd 2833	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑧 ∈ (𝐴[,]𝐵) ∧ 𝑤 = (𝑧 + 𝑇)) → 𝑤 ∈ ℝ)
60	59	rexlimdv3a 3138	. . . . . . . 8 ⊢ (𝜑 → (∃𝑧 ∈ (𝐴[,]𝐵)𝑤 = (𝑧 + 𝑇) → 𝑤 ∈ ℝ))
61	60	ralrimivw 3129	. . . . . . 7 ⊢ (𝜑 → ∀𝑤 ∈ ℂ (∃𝑧 ∈ (𝐴[,]𝐵)𝑤 = (𝑧 + 𝑇) → 𝑤 ∈ ℝ))
62		rabss 4019	. . . . . . 7 ⊢ ({𝑤 ∈ ℂ ∣ ∃𝑧 ∈ (𝐴[,]𝐵)𝑤 = (𝑧 + 𝑇)} ⊆ ℝ ↔ ∀𝑤 ∈ ℂ (∃𝑧 ∈ (𝐴[,]𝐵)𝑤 = (𝑧 + 𝑇) → 𝑤 ∈ ℝ))
63	61, 62	sylibr 234	. . . . . 6 ⊢ (𝜑 → {𝑤 ∈ ℂ ∣ ∃𝑧 ∈ (𝐴[,]𝐵)𝑤 = (𝑧 + 𝑇)} ⊆ ℝ)
64	10	fdmd 6668	. . . . . 6 ⊢ (𝜑 → dom 𝐹 = ℝ)
65	63, 64	sseqtrrd 3968	. . . . 5 ⊢ (𝜑 → {𝑤 ∈ ℂ ∣ ∃𝑧 ∈ (𝐴[,]𝐵)𝑤 = (𝑧 + 𝑇)} ⊆ dom 𝐹)
66		itgperiod.fper	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐴[,]𝐵)) → (𝐹‘(𝑥 + 𝑇)) = (𝐹‘𝑥))
67		itgperiod.fcn	. . . . 5 ⊢ (𝜑 → (𝐹 ↾ (𝐴[,]𝐵)) ∈ ((𝐴[,]𝐵)–cn→ℂ))
68	26, 4, 52, 53, 65, 66, 67	cncfperiod 46004	. . . 4 ⊢ (𝜑 → (𝐹 ↾ {𝑤 ∈ ℂ ∣ ∃𝑧 ∈ (𝐴[,]𝐵)𝑤 = (𝑧 + 𝑇)}) ∈ ({𝑤 ∈ ℂ ∣ ∃𝑧 ∈ (𝐴[,]𝐵)𝑤 = (𝑧 + 𝑇)}–cn→ℂ))
69	47	elrab 3643	. . . . . . . . 9 ⊢ (𝑥 ∈ {𝑤 ∈ ℂ ∣ ∃𝑧 ∈ (𝐴[,]𝐵)𝑤 = (𝑧 + 𝑇)} ↔ (𝑥 ∈ ℂ ∧ ∃𝑧 ∈ (𝐴[,]𝐵)𝑥 = (𝑧 + 𝑇)))
70		simprr 772	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝑥 ∈ ℂ ∧ ∃𝑧 ∈ (𝐴[,]𝐵)𝑥 = (𝑧 + 𝑇))) → ∃𝑧 ∈ (𝐴[,]𝐵)𝑥 = (𝑧 + 𝑇))
71		nfv 1915	. . . . . . . . . . . 12 ⊢ Ⅎ𝑧𝜑
72		nfv 1915	. . . . . . . . . . . . 13 ⊢ Ⅎ𝑧 𝑥 ∈ ℂ
73		nfre1 3258	. . . . . . . . . . . . 13 ⊢ Ⅎ𝑧∃𝑧 ∈ (𝐴[,]𝐵)𝑥 = (𝑧 + 𝑇)
74	72, 73	nfan 1900	. . . . . . . . . . . 12 ⊢ Ⅎ𝑧(𝑥 ∈ ℂ ∧ ∃𝑧 ∈ (𝐴[,]𝐵)𝑥 = (𝑧 + 𝑇))
75	71, 74	nfan 1900	. . . . . . . . . . 11 ⊢ Ⅎ𝑧(𝜑 ∧ (𝑥 ∈ ℂ ∧ ∃𝑧 ∈ (𝐴[,]𝐵)𝑥 = (𝑧 + 𝑇)))
76		nfv 1915	. . . . . . . . . . 11 ⊢ Ⅎ𝑧 𝑥 ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇))
77		simp3 1138	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑧 ∈ (𝐴[,]𝐵) ∧ 𝑥 = (𝑧 + 𝑇)) → 𝑥 = (𝑧 + 𝑇))
78	1	adantr 480	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝜑 ∧ 𝑧 ∈ (𝐴[,]𝐵)) → 𝐴 ∈ ℝ)
79		simpr 484	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((𝜑 ∧ 𝑧 ∈ (𝐴[,]𝐵)) → 𝑧 ∈ (𝐴[,]𝐵))
80	2	adantr 480	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((𝜑 ∧ 𝑧 ∈ (𝐴[,]𝐵)) → 𝐵 ∈ ℝ)
81		elicc2 13315	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (𝑧 ∈ (𝐴[,]𝐵) ↔ (𝑧 ∈ ℝ ∧ 𝐴 ≤ 𝑧 ∧ 𝑧 ≤ 𝐵)))
82	78, 80, 81	syl2anc 584	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((𝜑 ∧ 𝑧 ∈ (𝐴[,]𝐵)) → (𝑧 ∈ (𝐴[,]𝐵) ↔ (𝑧 ∈ ℝ ∧ 𝐴 ≤ 𝑧 ∧ 𝑧 ≤ 𝐵)))
83	79, 82	mpbid 232	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝜑 ∧ 𝑧 ∈ (𝐴[,]𝐵)) → (𝑧 ∈ ℝ ∧ 𝐴 ≤ 𝑧 ∧ 𝑧 ≤ 𝐵))
84	83	simp2d 1143	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝜑 ∧ 𝑧 ∈ (𝐴[,]𝐵)) → 𝐴 ≤ 𝑧)
85	78, 55, 56, 84	leadd1dd 11740	. . . . . . . . . . . . . . . . 17 ⊢ ((𝜑 ∧ 𝑧 ∈ (𝐴[,]𝐵)) → (𝐴 + 𝑇) ≤ (𝑧 + 𝑇))
86	83	simp3d 1144	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝜑 ∧ 𝑧 ∈ (𝐴[,]𝐵)) → 𝑧 ≤ 𝐵)
87	55, 80, 56, 86	leadd1dd 11740	. . . . . . . . . . . . . . . . 17 ⊢ ((𝜑 ∧ 𝑧 ∈ (𝐴[,]𝐵)) → (𝑧 + 𝑇) ≤ (𝐵 + 𝑇))
88	57, 85, 87	3jca 1128	. . . . . . . . . . . . . . . 16 ⊢ ((𝜑 ∧ 𝑧 ∈ (𝐴[,]𝐵)) → ((𝑧 + 𝑇) ∈ ℝ ∧ (𝐴 + 𝑇) ≤ (𝑧 + 𝑇) ∧ (𝑧 + 𝑇) ≤ (𝐵 + 𝑇)))
89	88	3adant3 1132	. . . . . . . . . . . . . . 15 ⊢ ((𝜑 ∧ 𝑧 ∈ (𝐴[,]𝐵) ∧ 𝑥 = (𝑧 + 𝑇)) → ((𝑧 + 𝑇) ∈ ℝ ∧ (𝐴 + 𝑇) ≤ (𝑧 + 𝑇) ∧ (𝑧 + 𝑇) ≤ (𝐵 + 𝑇)))
90	8	3ad2ant1 1133	. . . . . . . . . . . . . . . 16 ⊢ ((𝜑 ∧ 𝑧 ∈ (𝐴[,]𝐵) ∧ 𝑥 = (𝑧 + 𝑇)) → (𝐴 + 𝑇) ∈ ℝ)
91	9	3ad2ant1 1133	. . . . . . . . . . . . . . . 16 ⊢ ((𝜑 ∧ 𝑧 ∈ (𝐴[,]𝐵) ∧ 𝑥 = (𝑧 + 𝑇)) → (𝐵 + 𝑇) ∈ ℝ)
92		elicc2 13315	. . . . . . . . . . . . . . . 16 ⊢ (((𝐴 + 𝑇) ∈ ℝ ∧ (𝐵 + 𝑇) ∈ ℝ) → ((𝑧 + 𝑇) ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇)) ↔ ((𝑧 + 𝑇) ∈ ℝ ∧ (𝐴 + 𝑇) ≤ (𝑧 + 𝑇) ∧ (𝑧 + 𝑇) ≤ (𝐵 + 𝑇))))
93	90, 91, 92	syl2anc 584	. . . . . . . . . . . . . . 15 ⊢ ((𝜑 ∧ 𝑧 ∈ (𝐴[,]𝐵) ∧ 𝑥 = (𝑧 + 𝑇)) → ((𝑧 + 𝑇) ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇)) ↔ ((𝑧 + 𝑇) ∈ ℝ ∧ (𝐴 + 𝑇) ≤ (𝑧 + 𝑇) ∧ (𝑧 + 𝑇) ≤ (𝐵 + 𝑇))))
94	89, 93	mpbird 257	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑧 ∈ (𝐴[,]𝐵) ∧ 𝑥 = (𝑧 + 𝑇)) → (𝑧 + 𝑇) ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇)))
95	77, 94	eqeltrd 2833	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑧 ∈ (𝐴[,]𝐵) ∧ 𝑥 = (𝑧 + 𝑇)) → 𝑥 ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇)))
96	95	3exp 1119	. . . . . . . . . . . 12 ⊢ (𝜑 → (𝑧 ∈ (𝐴[,]𝐵) → (𝑥 = (𝑧 + 𝑇) → 𝑥 ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇)))))
97	96	adantr 480	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ (𝑥 ∈ ℂ ∧ ∃𝑧 ∈ (𝐴[,]𝐵)𝑥 = (𝑧 + 𝑇))) → (𝑧 ∈ (𝐴[,]𝐵) → (𝑥 = (𝑧 + 𝑇) → 𝑥 ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇)))))
98	75, 76, 97	rexlimd 3240	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝑥 ∈ ℂ ∧ ∃𝑧 ∈ (𝐴[,]𝐵)𝑥 = (𝑧 + 𝑇))) → (∃𝑧 ∈ (𝐴[,]𝐵)𝑥 = (𝑧 + 𝑇) → 𝑥 ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇))))
99	70, 98	mpd 15	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑥 ∈ ℂ ∧ ∃𝑧 ∈ (𝐴[,]𝐵)𝑥 = (𝑧 + 𝑇))) → 𝑥 ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇)))
100	69, 99	sylan2b 594	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ {𝑤 ∈ ℂ ∣ ∃𝑧 ∈ (𝐴[,]𝐵)𝑤 = (𝑧 + 𝑇)}) → 𝑥 ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇)))
101	16	recnd 11149	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇))) → 𝑥 ∈ ℂ)
102	1	adantr 480	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇))) → 𝐴 ∈ ℝ)
103	2	adantr 480	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇))) → 𝐵 ∈ ℝ)
104	4	adantr 480	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇))) → 𝑇 ∈ ℝ)
105	16, 104	resubcld 11554	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇))) → (𝑥 − 𝑇) ∈ ℝ)
106	1	recnd 11149	. . . . . . . . . . . . . . 15 ⊢ (𝜑 → 𝐴 ∈ ℂ)
107	106, 21	pncand 11482	. . . . . . . . . . . . . 14 ⊢ (𝜑 → ((𝐴 + 𝑇) − 𝑇) = 𝐴)
108	107	eqcomd 2739	. . . . . . . . . . . . 13 ⊢ (𝜑 → 𝐴 = ((𝐴 + 𝑇) − 𝑇))
109	108	adantr 480	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇))) → 𝐴 = ((𝐴 + 𝑇) − 𝑇))
110		elicc2 13315	. . . . . . . . . . . . . . . 16 ⊢ (((𝐴 + 𝑇) ∈ ℝ ∧ (𝐵 + 𝑇) ∈ ℝ) → (𝑥 ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇)) ↔ (𝑥 ∈ ℝ ∧ (𝐴 + 𝑇) ≤ 𝑥 ∧ 𝑥 ≤ (𝐵 + 𝑇))))
111	12, 13, 110	syl2anc 584	. . . . . . . . . . . . . . 15 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇))) → (𝑥 ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇)) ↔ (𝑥 ∈ ℝ ∧ (𝐴 + 𝑇) ≤ 𝑥 ∧ 𝑥 ≤ (𝐵 + 𝑇))))
112	14, 111	mpbid 232	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇))) → (𝑥 ∈ ℝ ∧ (𝐴 + 𝑇) ≤ 𝑥 ∧ 𝑥 ≤ (𝐵 + 𝑇)))
113	112	simp2d 1143	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇))) → (𝐴 + 𝑇) ≤ 𝑥)
114	12, 16, 104, 113	lesub1dd 11742	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇))) → ((𝐴 + 𝑇) − 𝑇) ≤ (𝑥 − 𝑇))
115	109, 114	eqbrtrd 5117	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇))) → 𝐴 ≤ (𝑥 − 𝑇))
116	112	simp3d 1144	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇))) → 𝑥 ≤ (𝐵 + 𝑇))
117	16, 13, 104, 116	lesub1dd 11742	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇))) → (𝑥 − 𝑇) ≤ ((𝐵 + 𝑇) − 𝑇))
118	2	recnd 11149	. . . . . . . . . . . . . 14 ⊢ (𝜑 → 𝐵 ∈ ℂ)
119	118, 21	pncand 11482	. . . . . . . . . . . . 13 ⊢ (𝜑 → ((𝐵 + 𝑇) − 𝑇) = 𝐵)
120	119	adantr 480	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇))) → ((𝐵 + 𝑇) − 𝑇) = 𝐵)
121	117, 120	breqtrd 5121	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇))) → (𝑥 − 𝑇) ≤ 𝐵)
122	102, 103, 105, 115, 121	eliccd 45631	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇))) → (𝑥 − 𝑇) ∈ (𝐴[,]𝐵))
123	21	adantr 480	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇))) → 𝑇 ∈ ℂ)
124	101, 123	npcand 11485	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇))) → ((𝑥 − 𝑇) + 𝑇) = 𝑥)
125	124	eqcomd 2739	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇))) → 𝑥 = ((𝑥 − 𝑇) + 𝑇))
126		oveq1 7361	. . . . . . . . . . 11 ⊢ (𝑧 = (𝑥 − 𝑇) → (𝑧 + 𝑇) = ((𝑥 − 𝑇) + 𝑇))
127	126	rspceeqv 3596	. . . . . . . . . 10 ⊢ (((𝑥 − 𝑇) ∈ (𝐴[,]𝐵) ∧ 𝑥 = ((𝑥 − 𝑇) + 𝑇)) → ∃𝑧 ∈ (𝐴[,]𝐵)𝑥 = (𝑧 + 𝑇))
128	122, 125, 127	syl2anc 584	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇))) → ∃𝑧 ∈ (𝐴[,]𝐵)𝑥 = (𝑧 + 𝑇))
129	101, 128, 69	sylanbrc 583	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇))) → 𝑥 ∈ {𝑤 ∈ ℂ ∣ ∃𝑧 ∈ (𝐴[,]𝐵)𝑤 = (𝑧 + 𝑇)})
130	100, 129	impbida 800	. . . . . . 7 ⊢ (𝜑 → (𝑥 ∈ {𝑤 ∈ ℂ ∣ ∃𝑧 ∈ (𝐴[,]𝐵)𝑤 = (𝑧 + 𝑇)} ↔ 𝑥 ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇))))
131	130	eqrdv 2731	. . . . . 6 ⊢ (𝜑 → {𝑤 ∈ ℂ ∣ ∃𝑧 ∈ (𝐴[,]𝐵)𝑤 = (𝑧 + 𝑇)} = ((𝐴 + 𝑇)[,](𝐵 + 𝑇)))
132	131	reseq2d 5934	. . . . 5 ⊢ (𝜑 → (𝐹 ↾ {𝑤 ∈ ℂ ∣ ∃𝑧 ∈ (𝐴[,]𝐵)𝑤 = (𝑧 + 𝑇)}) = (𝐹 ↾ ((𝐴 + 𝑇)[,](𝐵 + 𝑇))))
133	131, 65	eqsstrrd 3966	. . . . . 6 ⊢ (𝜑 → ((𝐴 + 𝑇)[,](𝐵 + 𝑇)) ⊆ dom 𝐹)
134	53, 133	feqresmpt 6899	. . . . 5 ⊢ (𝜑 → (𝐹 ↾ ((𝐴 + 𝑇)[,](𝐵 + 𝑇))) = (𝑥 ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇)) ↦ (𝐹‘𝑥)))
135	132, 134	eqtr2d 2769	. . . 4 ⊢ (𝜑 → (𝑥 ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇)) ↦ (𝐹‘𝑥)) = (𝐹 ↾ {𝑤 ∈ ℂ ∣ ∃𝑧 ∈ (𝐴[,]𝐵)𝑤 = (𝑧 + 𝑇)}))
136	1, 2, 4	iccshift 45645	. . . . 5 ⊢ (𝜑 → ((𝐴 + 𝑇)[,](𝐵 + 𝑇)) = {𝑤 ∈ ℂ ∣ ∃𝑧 ∈ (𝐴[,]𝐵)𝑤 = (𝑧 + 𝑇)})
137	136	oveq1d 7369	. . . 4 ⊢ (𝜑 → (((𝐴 + 𝑇)[,](𝐵 + 𝑇))–cn→ℂ) = ({𝑤 ∈ ℂ ∣ ∃𝑧 ∈ (𝐴[,]𝐵)𝑤 = (𝑧 + 𝑇)}–cn→ℂ))
138	68, 135, 137	3eltr4d 2848	. . 3 ⊢ (𝜑 → (𝑥 ∈ ((𝐴 + 𝑇)[,](𝐵 + 𝑇)) ↦ (𝐹‘𝑥)) ∈ (((𝐴 + 𝑇)[,](𝐵 + 𝑇))–cn→ℂ))
139		ioosscn 13312	. . . . . 6 ⊢ (𝐴(,)𝐵) ⊆ ℂ
140	139	a1i 11	. . . . 5 ⊢ (𝜑 → (𝐴(,)𝐵) ⊆ ℂ)
141		1cnd 11116	. . . . 5 ⊢ (𝜑 → 1 ∈ ℂ)
142		ssid 3953	. . . . . 6 ⊢ ℂ ⊆ ℂ
143	142	a1i 11	. . . . 5 ⊢ (𝜑 → ℂ ⊆ ℂ)
144	140, 141, 143	constcncfg 45997	. . . 4 ⊢ (𝜑 → (𝑦 ∈ (𝐴(,)𝐵) ↦ 1) ∈ ((𝐴(,)𝐵)–cn→ℂ))
145		fconstmpt 5683	. . . . 5 ⊢ ((𝐴(,)𝐵) × {1}) = (𝑦 ∈ (𝐴(,)𝐵) ↦ 1)
146		ioombl 25496	. . . . . . 7 ⊢ (𝐴(,)𝐵) ∈ dom vol
147	146	a1i 11	. . . . . 6 ⊢ (𝜑 → (𝐴(,)𝐵) ∈ dom vol)
148		ioovolcl 25501	. . . . . . 7 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → (vol‘(𝐴(,)𝐵)) ∈ ℝ)
149	1, 2, 148	syl2anc 584	. . . . . 6 ⊢ (𝜑 → (vol‘(𝐴(,)𝐵)) ∈ ℝ)
150		iblconst 25749	. . . . . 6 ⊢ (((𝐴(,)𝐵) ∈ dom vol ∧ (vol‘(𝐴(,)𝐵)) ∈ ℝ ∧ 1 ∈ ℂ) → ((𝐴(,)𝐵) × {1}) ∈ 𝐿¹)
151	147, 149, 141, 150	syl3anc 1373	. . . . 5 ⊢ (𝜑 → ((𝐴(,)𝐵) × {1}) ∈ 𝐿¹)
152	145, 151	eqeltrrid 2838	. . . 4 ⊢ (𝜑 → (𝑦 ∈ (𝐴(,)𝐵) ↦ 1) ∈ 𝐿¹)
153	144, 152	elind 4149	. . 3 ⊢ (𝜑 → (𝑦 ∈ (𝐴(,)𝐵) ↦ 1) ∈ (((𝐴(,)𝐵)–cn→ℂ) ∩ 𝐿¹))
154	24	resmptd 5995	. . . . . . 7 ⊢ (𝜑 → ((𝑦 ∈ ℝ ↦ (𝑦 + 𝑇)) ↾ (𝐴[,]𝐵)) = (𝑦 ∈ (𝐴[,]𝐵) ↦ (𝑦 + 𝑇)))
155	154	eqcomd 2739	. . . . . 6 ⊢ (𝜑 → (𝑦 ∈ (𝐴[,]𝐵) ↦ (𝑦 + 𝑇)) = ((𝑦 ∈ ℝ ↦ (𝑦 + 𝑇)) ↾ (𝐴[,]𝐵)))
156	155	oveq2d 7370	. . . . 5 ⊢ (𝜑 → (ℝ D (𝑦 ∈ (𝐴[,]𝐵) ↦ (𝑦 + 𝑇))) = (ℝ D ((𝑦 ∈ ℝ ↦ (𝑦 + 𝑇)) ↾ (𝐴[,]𝐵))))
157	25	a1i 11	. . . . . 6 ⊢ (𝜑 → ℝ ⊆ ℂ)
158	157	sselda 3930	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑦 ∈ ℝ) → 𝑦 ∈ ℂ)
159	21	adantr 480	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑦 ∈ ℝ) → 𝑇 ∈ ℂ)
160	158, 159	addcld 11140	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑦 ∈ ℝ) → (𝑦 + 𝑇) ∈ ℂ)
161	160	fmpttd 7056	. . . . . 6 ⊢ (𝜑 → (𝑦 ∈ ℝ ↦ (𝑦 + 𝑇)):ℝ⟶ℂ)
162		ssid 3953	. . . . . . 7 ⊢ ℝ ⊆ ℝ
163	162	a1i 11	. . . . . 6 ⊢ (𝜑 → ℝ ⊆ ℝ)
164		eqid 2733	. . . . . . 7 ⊢ (TopOpen‘ℂ_fld) = (TopOpen‘ℂ_fld)
165		tgioo4 24723	. . . . . . 7 ⊢ (topGen‘ran (,)) = ((TopOpen‘ℂ_fld) ↾_t ℝ)
166	164, 165	dvres 25842	. . . . . 6 ⊢ (((ℝ ⊆ ℂ ∧ (𝑦 ∈ ℝ ↦ (𝑦 + 𝑇)):ℝ⟶ℂ) ∧ (ℝ ⊆ ℝ ∧ (𝐴[,]𝐵) ⊆ ℝ)) → (ℝ D ((𝑦 ∈ ℝ ↦ (𝑦 + 𝑇)) ↾ (𝐴[,]𝐵))) = ((ℝ D (𝑦 ∈ ℝ ↦ (𝑦 + 𝑇))) ↾ ((int‘(topGen‘ran (,)))‘(𝐴[,]𝐵))))
167	157, 161, 163, 24, 166	syl22anc 838	. . . . 5 ⊢ (𝜑 → (ℝ D ((𝑦 ∈ ℝ ↦ (𝑦 + 𝑇)) ↾ (𝐴[,]𝐵))) = ((ℝ D (𝑦 ∈ ℝ ↦ (𝑦 + 𝑇))) ↾ ((int‘(topGen‘ran (,)))‘(𝐴[,]𝐵))))
168	156, 167	eqtrd 2768	. . . 4 ⊢ (𝜑 → (ℝ D (𝑦 ∈ (𝐴[,]𝐵) ↦ (𝑦 + 𝑇))) = ((ℝ D (𝑦 ∈ ℝ ↦ (𝑦 + 𝑇))) ↾ ((int‘(topGen‘ran (,)))‘(𝐴[,]𝐵))))
169		iccntr 24740	. . . . . 6 ⊢ ((𝐴 ∈ ℝ ∧ 𝐵 ∈ ℝ) → ((int‘(topGen‘ran (,)))‘(𝐴[,]𝐵)) = (𝐴(,)𝐵))
170	1, 2, 169	syl2anc 584	. . . . 5 ⊢ (𝜑 → ((int‘(topGen‘ran (,)))‘(𝐴[,]𝐵)) = (𝐴(,)𝐵))
171	170	reseq2d 5934	. . . 4 ⊢ (𝜑 → ((ℝ D (𝑦 ∈ ℝ ↦ (𝑦 + 𝑇))) ↾ ((int‘(topGen‘ran (,)))‘(𝐴[,]𝐵))) = ((ℝ D (𝑦 ∈ ℝ ↦ (𝑦 + 𝑇))) ↾ (𝐴(,)𝐵)))
172		reelprrecn 11107	. . . . . . . 8 ⊢ ℝ ∈ {ℝ, ℂ}
173	172	a1i 11	. . . . . . 7 ⊢ (𝜑 → ℝ ∈ {ℝ, ℂ})
174		1cnd 11116	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑦 ∈ ℝ) → 1 ∈ ℂ)
175	173	dvmptid 25891	. . . . . . 7 ⊢ (𝜑 → (ℝ D (𝑦 ∈ ℝ ↦ 𝑦)) = (𝑦 ∈ ℝ ↦ 1))
176		0cnd 11114	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑦 ∈ ℝ) → 0 ∈ ℂ)
177	173, 21	dvmptc 25892	. . . . . . 7 ⊢ (𝜑 → (ℝ D (𝑦 ∈ ℝ ↦ 𝑇)) = (𝑦 ∈ ℝ ↦ 0))
178	173, 158, 174, 175, 159, 176, 177	dvmptadd 25894	. . . . . 6 ⊢ (𝜑 → (ℝ D (𝑦 ∈ ℝ ↦ (𝑦 + 𝑇))) = (𝑦 ∈ ℝ ↦ (1 + 0)))
179	178	reseq1d 5933	. . . . 5 ⊢ (𝜑 → ((ℝ D (𝑦 ∈ ℝ ↦ (𝑦 + 𝑇))) ↾ (𝐴(,)𝐵)) = ((𝑦 ∈ ℝ ↦ (1 + 0)) ↾ (𝐴(,)𝐵)))
180		ioossre 13311	. . . . . . 7 ⊢ (𝐴(,)𝐵) ⊆ ℝ
181	180	a1i 11	. . . . . 6 ⊢ (𝜑 → (𝐴(,)𝐵) ⊆ ℝ)
182	181	resmptd 5995	. . . . 5 ⊢ (𝜑 → ((𝑦 ∈ ℝ ↦ (1 + 0)) ↾ (𝐴(,)𝐵)) = (𝑦 ∈ (𝐴(,)𝐵) ↦ (1 + 0)))
183		1p0e1 12253	. . . . . . 7 ⊢ (1 + 0) = 1
184	183	mpteq2i 5191	. . . . . 6 ⊢ (𝑦 ∈ (𝐴(,)𝐵) ↦ (1 + 0)) = (𝑦 ∈ (𝐴(,)𝐵) ↦ 1)
185	184	a1i 11	. . . . 5 ⊢ (𝜑 → (𝑦 ∈ (𝐴(,)𝐵) ↦ (1 + 0)) = (𝑦 ∈ (𝐴(,)𝐵) ↦ 1))
186	179, 182, 185	3eqtrd 2772	. . . 4 ⊢ (𝜑 → ((ℝ D (𝑦 ∈ ℝ ↦ (𝑦 + 𝑇))) ↾ (𝐴(,)𝐵)) = (𝑦 ∈ (𝐴(,)𝐵) ↦ 1))
187	168, 171, 186	3eqtrd 2772	. . 3 ⊢ (𝜑 → (ℝ D (𝑦 ∈ (𝐴[,]𝐵) ↦ (𝑦 + 𝑇))) = (𝑦 ∈ (𝐴(,)𝐵) ↦ 1))
188		fveq2 6830	. . 3 ⊢ (𝑥 = (𝑦 + 𝑇) → (𝐹‘𝑥) = (𝐹‘(𝑦 + 𝑇)))
189		oveq1 7361	. . 3 ⊢ (𝑦 = 𝐴 → (𝑦 + 𝑇) = (𝐴 + 𝑇))
190		oveq1 7361	. . 3 ⊢ (𝑦 = 𝐵 → (𝑦 + 𝑇) = (𝐵 + 𝑇))
191	1, 2, 5, 45, 138, 153, 187, 188, 189, 190, 8, 9	itgsubsticc 46101	. 2 ⊢ (𝜑 → ⨜[(𝐴 + 𝑇) → (𝐵 + 𝑇)](𝐹‘𝑥) d𝑥 = ⨜[𝐴 → 𝐵]((𝐹‘(𝑦 + 𝑇)) · 1) d𝑦)
192	5	ditgpos 25787	. . 3 ⊢ (𝜑 → ⨜[𝐴 → 𝐵]((𝐹‘(𝑦 + 𝑇)) · 1) d𝑦 = ∫(𝐴(,)𝐵)((𝐹‘(𝑦 + 𝑇)) · 1) d𝑦)
193	10	adantr 480	. . . . . 6 ⊢ ((𝜑 ∧ 𝑦 ∈ (𝐴[,]𝐵)) → 𝐹:ℝ⟶ℂ)
194	193, 33	ffvelcdmd 7026	. . . . 5 ⊢ ((𝜑 ∧ 𝑦 ∈ (𝐴[,]𝐵)) → (𝐹‘(𝑦 + 𝑇)) ∈ ℂ)
195		1cnd 11116	. . . . 5 ⊢ ((𝜑 ∧ 𝑦 ∈ (𝐴[,]𝐵)) → 1 ∈ ℂ)
196	194, 195	mulcld 11141	. . . 4 ⊢ ((𝜑 ∧ 𝑦 ∈ (𝐴[,]𝐵)) → ((𝐹‘(𝑦 + 𝑇)) · 1) ∈ ℂ)
197	1, 2, 196	itgioo 25747	. . 3 ⊢ (𝜑 → ∫(𝐴(,)𝐵)((𝐹‘(𝑦 + 𝑇)) · 1) d𝑦 = ∫(𝐴[,]𝐵)((𝐹‘(𝑦 + 𝑇)) · 1) d𝑦)
198		fvoveq1 7377	. . . . . 6 ⊢ (𝑦 = 𝑥 → (𝐹‘(𝑦 + 𝑇)) = (𝐹‘(𝑥 + 𝑇)))
199	198	oveq1d 7369	. . . . 5 ⊢ (𝑦 = 𝑥 → ((𝐹‘(𝑦 + 𝑇)) · 1) = ((𝐹‘(𝑥 + 𝑇)) · 1))
200	199	cbvitgv 25708	. . . 4 ⊢ ∫(𝐴[,]𝐵)((𝐹‘(𝑦 + 𝑇)) · 1) d𝑦 = ∫(𝐴[,]𝐵)((𝐹‘(𝑥 + 𝑇)) · 1) d𝑥
201	10	adantr 480	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐴[,]𝐵)) → 𝐹:ℝ⟶ℂ)
202	24	sselda 3930	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐴[,]𝐵)) → 𝑥 ∈ ℝ)
203	4	adantr 480	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐴[,]𝐵)) → 𝑇 ∈ ℝ)
204	202, 203	readdcld 11150	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐴[,]𝐵)) → (𝑥 + 𝑇) ∈ ℝ)
205	201, 204	ffvelcdmd 7026	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐴[,]𝐵)) → (𝐹‘(𝑥 + 𝑇)) ∈ ℂ)
206	205	mulridd 11138	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐴[,]𝐵)) → ((𝐹‘(𝑥 + 𝑇)) · 1) = (𝐹‘(𝑥 + 𝑇)))
207	206, 66	eqtrd 2768	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐴[,]𝐵)) → ((𝐹‘(𝑥 + 𝑇)) · 1) = (𝐹‘𝑥))
208	207	itgeq2dv 25713	. . . 4 ⊢ (𝜑 → ∫(𝐴[,]𝐵)((𝐹‘(𝑥 + 𝑇)) · 1) d𝑥 = ∫(𝐴[,]𝐵)(𝐹‘𝑥) d𝑥)
209	200, 208	eqtrid 2780	. . 3 ⊢ (𝜑 → ∫(𝐴[,]𝐵)((𝐹‘(𝑦 + 𝑇)) · 1) d𝑦 = ∫(𝐴[,]𝐵)(𝐹‘𝑥) d𝑥)
210	192, 197, 209	3eqtrd 2772	. 2 ⊢ (𝜑 → ⨜[𝐴 → 𝐵]((𝐹‘(𝑦 + 𝑇)) · 1) d𝑦 = ∫(𝐴[,]𝐵)(𝐹‘𝑥) d𝑥)
211	19, 191, 210	3eqtrd 2772	1 ⊢ (𝜑 → ∫((𝐴 + 𝑇)[,](𝐵 + 𝑇))(𝐹‘𝑥) d𝑥 = ∫(𝐴[,]𝐵)(𝐹‘𝑥) d𝑥)

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 ∧ w3a 1086 = wceq 1541 ∈ wcel 2113 ∀wral 3048 ∃wrex 3057 {crab 3396 ⊆ wss 3898 {csn 4577 {cpr 4579 class class class wbr 5095 ↦ cmpt 5176 × cxp 5619 dom cdm 5621 ran crn 5622 ↾ cres 5623 ⟶wf 6484 ‘cfv 6488 (class class class)co 7354 ℂcc 11013 ℝcr 11014 0cc0 11015 1c1 11016 + caddc 11018 · cmul 11020 ≤ cle 11156 − cmin 11353 ℝ⁺crp 12894 (,)cioo 13249 [,]cicc 13252 TopOpenctopn 17329 topGenctg 17345 ℂ_fldccnfld 21295 intcnt 22935 –cn→ccncf 24799 volcvol 25394 𝐿¹cibl 25548 ∫citg 25549 ⨜cdit 25777 D cdv 25794

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2182 ax-ext 2705 ax-rep 5221 ax-sep 5238 ax-nul 5248 ax-pow 5307 ax-pr 5374 ax-un 7676 ax-inf2 9540 ax-cc 10335 ax-cnex 11071 ax-resscn 11072 ax-1cn 11073 ax-icn 11074 ax-addcl 11075 ax-addrcl 11076 ax-mulcl 11077 ax-mulrcl 11078 ax-mulcom 11079 ax-addass 11080 ax-mulass 11081 ax-distr 11082 ax-i2m1 11083 ax-1ne0 11084 ax-1rid 11085 ax-rnegex 11086 ax-rrecex 11087 ax-cnre 11088 ax-pre-lttri 11089 ax-pre-lttrn 11090 ax-pre-ltadd 11091 ax-pre-mulgt0 11092 ax-pre-sup 11093 ax-addf 11094

This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2537 df-eu 2566 df-clab 2712 df-cleq 2725 df-clel 2808 df-nfc 2882 df-ne 2930 df-nel 3034 df-ral 3049 df-rex 3058 df-rmo 3347 df-reu 3348 df-rab 3397 df-v 3439 df-sbc 3738 df-csb 3847 df-dif 3901 df-un 3903 df-in 3905 df-ss 3915 df-pss 3918 df-symdif 4202 df-nul 4283 df-if 4477 df-pw 4553 df-sn 4578 df-pr 4580 df-tp 4582 df-op 4584 df-uni 4861 df-int 4900 df-iun 4945 df-iin 4946 df-disj 5063 df-br 5096 df-opab 5158 df-mpt 5177 df-tr 5203 df-id 5516 df-eprel 5521 df-po 5529 df-so 5530 df-fr 5574 df-se 5575 df-we 5576 df-xp 5627 df-rel 5628 df-cnv 5629 df-co 5630 df-dm 5631 df-rn 5632 df-res 5633 df-ima 5634 df-pred 6255 df-ord 6316 df-on 6317 df-lim 6318 df-suc 6319 df-iota 6444 df-fun 6490 df-fn 6491 df-f 6492 df-f1 6493 df-fo 6494 df-f1o 6495 df-fv 6496 df-isom 6497 df-riota 7311 df-ov 7357 df-oprab 7358 df-mpo 7359 df-of 7618 df-ofr 7619 df-om 7805 df-1st 7929 df-2nd 7930 df-supp 8099 df-frecs 8219 df-wrecs 8250 df-recs 8299 df-rdg 8337 df-1o 8393 df-2o 8394 df-oadd 8397 df-omul 8398 df-er 8630 df-map 8760 df-pm 8761 df-ixp 8830 df-en 8878 df-dom 8879 df-sdom 8880 df-fin 8881 df-fsupp 9255 df-fi 9304 df-sup 9335 df-inf 9336 df-oi 9405 df-dju 9803 df-card 9841 df-acn 9844 df-pnf 11157 df-mnf 11158 df-xr 11159 df-ltxr 11160 df-le 11161 df-sub 11355 df-neg 11356 df-div 11784 df-nn 12135 df-2 12197 df-3 12198 df-4 12199 df-5 12200 df-6 12201 df-7 12202 df-8 12203 df-9 12204 df-n0 12391 df-z 12478 df-dec 12597 df-uz 12741 df-q 12851 df-rp 12895 df-xneg 13015 df-xadd 13016 df-xmul 13017 df-ioo 13253 df-ioc 13254 df-ico 13255 df-icc 13256 df-fz 13412 df-fzo 13559 df-fl 13700 df-mod 13778 df-seq 13913 df-exp 13973 df-hash 14242 df-cj 15010 df-re 15011 df-im 15012 df-sqrt 15146 df-abs 15147 df-limsup 15382 df-clim 15399 df-rlim 15400 df-sum 15598 df-struct 17062 df-sets 17079 df-slot 17097 df-ndx 17109 df-base 17125 df-ress 17146 df-plusg 17178 df-mulr 17179 df-starv 17180 df-sca 17181 df-vsca 17182 df-ip 17183 df-tset 17184 df-ple 17185 df-ds 17187 df-unif 17188 df-hom 17189 df-cco 17190 df-rest 17330 df-topn 17331 df-0g 17349 df-gsum 17350 df-topgen 17351 df-pt 17352 df-prds 17355 df-xrs 17410 df-qtop 17415 df-imas 17416 df-xps 17418 df-mre 17492 df-mrc 17493 df-acs 17495 df-mgm 18552 df-sgrp 18631 df-mnd 18647 df-submnd 18696 df-mulg 18985 df-cntz 19233 df-cmn 19698 df-psmet 21287 df-xmet 21288 df-met 21289 df-bl 21290 df-mopn 21291 df-fbas 21292 df-fg 21293 df-cnfld 21296 df-top 22812 df-topon 22829 df-topsp 22851 df-bases 22864 df-cld 22937 df-ntr 22938 df-cls 22939 df-nei 23016 df-lp 23054 df-perf 23055 df-cn 23145 df-cnp 23146 df-haus 23233 df-cmp 23305 df-tx 23480 df-hmeo 23673 df-fil 23764 df-fm 23856 df-flim 23857 df-flf 23858 df-xms 24238 df-ms 24239 df-tms 24240 df-cncf 24801 df-ovol 25395 df-vol 25396 df-mbf 25550 df-itg1 25551 df-itg2 25552 df-ibl 25553 df-itg 25554 df-0p 25601 df-ditg 25778 df-limc 25797 df-dv 25798

This theorem is referenced by: (None)

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