limcresioolb - Mathbox for Glauco Siliprandi

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Theorem limcresioolb 44359

Description: The right limit doesn't change if the function is restricted to a smaller open interval. (Contributed by Glauco Siliprandi, 11-Dec-2019.)

**Hypotheses**
Ref	Expression
limcresioolb.f	⊢ (𝜑 → 𝐹:𝐴⟶ℂ)
limcresioolb.b	⊢ (𝜑 → 𝐵 ∈ ℝ)
limcresioolb.c	⊢ (𝜑 → 𝐶 ∈ ℝ^*)
limcresioolb.bltc	⊢ (𝜑 → 𝐵 < 𝐶)
limcresioolb.bcss	⊢ (𝜑 → (𝐵(,)𝐶) ⊆ 𝐴)
limcresioolb.d	⊢ (𝜑 → 𝐷 ∈ ℝ^*)
limcresioolb.cled	⊢ (𝜑 → 𝐶 ≤ 𝐷)

**Assertion**
Ref	Expression
limcresioolb	⊢ (𝜑 → ((𝐹 ↾ (𝐵(,)𝐶)) lim_ℂ 𝐵) = ((𝐹 ↾ (𝐵(,)𝐷)) lim_ℂ 𝐵))

Proof of Theorem limcresioolb Dummy variable 𝑥 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		limcresioolb.d	. . . . . 6 ⊢ (𝜑 → 𝐷 ∈ ℝ^*)
2		limcresioolb.cled	. . . . . 6 ⊢ (𝜑 → 𝐶 ≤ 𝐷)
3		iooss2 13360	. . . . . 6 ⊢ ((𝐷 ∈ ℝ^* ∧ 𝐶 ≤ 𝐷) → (𝐵(,)𝐶) ⊆ (𝐵(,)𝐷))
4	1, 2, 3	syl2anc 585	. . . . 5 ⊢ (𝜑 → (𝐵(,)𝐶) ⊆ (𝐵(,)𝐷))
5	4	resabs1d 6013	. . . 4 ⊢ (𝜑 → ((𝐹 ↾ (𝐵(,)𝐷)) ↾ (𝐵(,)𝐶)) = (𝐹 ↾ (𝐵(,)𝐶)))
6	5	eqcomd 2739	. . 3 ⊢ (𝜑 → (𝐹 ↾ (𝐵(,)𝐶)) = ((𝐹 ↾ (𝐵(,)𝐷)) ↾ (𝐵(,)𝐶)))
7	6	oveq1d 7424	. 2 ⊢ (𝜑 → ((𝐹 ↾ (𝐵(,)𝐶)) lim_ℂ 𝐵) = (((𝐹 ↾ (𝐵(,)𝐷)) ↾ (𝐵(,)𝐶)) lim_ℂ 𝐵))
8		limcresioolb.f	. . . 4 ⊢ (𝜑 → 𝐹:𝐴⟶ℂ)
9		fresin 6761	. . . 4 ⊢ (𝐹:𝐴⟶ℂ → (𝐹 ↾ (𝐵(,)𝐷)):(𝐴 ∩ (𝐵(,)𝐷))⟶ℂ)
10	8, 9	syl 17	. . 3 ⊢ (𝜑 → (𝐹 ↾ (𝐵(,)𝐷)):(𝐴 ∩ (𝐵(,)𝐷))⟶ℂ)
11		limcresioolb.bcss	. . . 4 ⊢ (𝜑 → (𝐵(,)𝐶) ⊆ 𝐴)
12	11, 4	ssind 4233	. . 3 ⊢ (𝜑 → (𝐵(,)𝐶) ⊆ (𝐴 ∩ (𝐵(,)𝐷)))
13		inss2 4230	. . . . 5 ⊢ (𝐴 ∩ (𝐵(,)𝐷)) ⊆ (𝐵(,)𝐷)
14		ioosscn 13386	. . . . 5 ⊢ (𝐵(,)𝐷) ⊆ ℂ
15	13, 14	sstri 3992	. . . 4 ⊢ (𝐴 ∩ (𝐵(,)𝐷)) ⊆ ℂ
16	15	a1i 11	. . 3 ⊢ (𝜑 → (𝐴 ∩ (𝐵(,)𝐷)) ⊆ ℂ)
17		eqid 2733	. . 3 ⊢ (TopOpen‘ℂ_fld) = (TopOpen‘ℂ_fld)
18		eqid 2733	. . 3 ⊢ ((TopOpen‘ℂ_fld) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})) = ((TopOpen‘ℂ_fld) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))
19		limcresioolb.b	. . . . . 6 ⊢ (𝜑 → 𝐵 ∈ ℝ)
20	19	rexrd 11264	. . . . 5 ⊢ (𝜑 → 𝐵 ∈ ℝ^*)
21		limcresioolb.c	. . . . 5 ⊢ (𝜑 → 𝐶 ∈ ℝ^*)
22		limcresioolb.bltc	. . . . 5 ⊢ (𝜑 → 𝐵 < 𝐶)
23		lbico1 13378	. . . . 5 ⊢ ((𝐵 ∈ ℝ^* ∧ 𝐶 ∈ ℝ^* ∧ 𝐵 < 𝐶) → 𝐵 ∈ (𝐵[,)𝐶))
24	20, 21, 22, 23	syl3anc 1372	. . . 4 ⊢ (𝜑 → 𝐵 ∈ (𝐵[,)𝐶))
25		snunioo1 44225	. . . . . . 7 ⊢ ((𝐵 ∈ ℝ^* ∧ 𝐶 ∈ ℝ^* ∧ 𝐵 < 𝐶) → ((𝐵(,)𝐶) ∪ {𝐵}) = (𝐵[,)𝐶))
26	20, 21, 22, 25	syl3anc 1372	. . . . . 6 ⊢ (𝜑 → ((𝐵(,)𝐶) ∪ {𝐵}) = (𝐵[,)𝐶))
27	26	fveq2d 6896	. . . . 5 ⊢ (𝜑 → ((int‘((TopOpen‘ℂ_fld) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})))‘((𝐵(,)𝐶) ∪ {𝐵})) = ((int‘((TopOpen‘ℂ_fld) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})))‘(𝐵[,)𝐶)))
28	17	cnfldtop 24300	. . . . . . . 8 ⊢ (TopOpen‘ℂ_fld) ∈ Top
29		ovex 7442	. . . . . . . . . 10 ⊢ (𝐵(,)𝐷) ∈ V
30	29	inex2 5319	. . . . . . . . 9 ⊢ (𝐴 ∩ (𝐵(,)𝐷)) ∈ V
31		snex 5432	. . . . . . . . 9 ⊢ {𝐵} ∈ V
32	30, 31	unex 7733	. . . . . . . 8 ⊢ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}) ∈ V
33		resttop 22664	. . . . . . . 8 ⊢ (((TopOpen‘ℂ_fld) ∈ Top ∧ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}) ∈ V) → ((TopOpen‘ℂ_fld) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})) ∈ Top)
34	28, 32, 33	mp2an 691	. . . . . . 7 ⊢ ((TopOpen‘ℂ_fld) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})) ∈ Top
35	34	a1i 11	. . . . . 6 ⊢ (𝜑 → ((TopOpen‘ℂ_fld) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})) ∈ Top)
36		mnfxr 11271	. . . . . . . . . . . . 13 ⊢ -∞ ∈ ℝ^*
37	36	a1i 11	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) → -∞ ∈ ℝ^*)
38	21	adantr 482	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) → 𝐶 ∈ ℝ^*)
39		icossre 13405	. . . . . . . . . . . . . 14 ⊢ ((𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ^*) → (𝐵[,)𝐶) ⊆ ℝ)
40	19, 21, 39	syl2anc 585	. . . . . . . . . . . . 13 ⊢ (𝜑 → (𝐵[,)𝐶) ⊆ ℝ)
41	40	sselda 3983	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) → 𝑥 ∈ ℝ)
42	41	mnfltd 13104	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) → -∞ < 𝑥)
43	20	adantr 482	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) → 𝐵 ∈ ℝ^*)
44		simpr 486	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) → 𝑥 ∈ (𝐵[,)𝐶))
45		icoltub 44221	. . . . . . . . . . . . 13 ⊢ ((𝐵 ∈ ℝ^* ∧ 𝐶 ∈ ℝ^* ∧ 𝑥 ∈ (𝐵[,)𝐶)) → 𝑥 < 𝐶)
46	43, 38, 44, 45	syl3anc 1372	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) → 𝑥 < 𝐶)
47	37, 38, 41, 42, 46	eliood 44211	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) → 𝑥 ∈ (-∞(,)𝐶))
48		simpr 486	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑥 = 𝐵) → 𝑥 = 𝐵)
49		snidg 4663	. . . . . . . . . . . . . . . 16 ⊢ (𝐵 ∈ ℝ → 𝐵 ∈ {𝐵})
50		elun2 4178	. . . . . . . . . . . . . . . 16 ⊢ (𝐵 ∈ {𝐵} → 𝐵 ∈ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))
51	19, 49, 50	3syl 18	. . . . . . . . . . . . . . 15 ⊢ (𝜑 → 𝐵 ∈ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))
52	51	adantr 482	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑥 = 𝐵) → 𝐵 ∈ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))
53	48, 52	eqeltrd 2834	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑥 = 𝐵) → 𝑥 ∈ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))
54	53	adantlr 714	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) ∧ 𝑥 = 𝐵) → 𝑥 ∈ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))
55		simpll 766	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) ∧ ¬ 𝑥 = 𝐵) → 𝜑)
56	43	adantr 482	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) ∧ ¬ 𝑥 = 𝐵) → 𝐵 ∈ ℝ^*)
57	38	adantr 482	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) ∧ ¬ 𝑥 = 𝐵) → 𝐶 ∈ ℝ^*)
58	41	adantr 482	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) ∧ ¬ 𝑥 = 𝐵) → 𝑥 ∈ ℝ)
59	19	ad2antrr 725	. . . . . . . . . . . . . . 15 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) ∧ ¬ 𝑥 = 𝐵) → 𝐵 ∈ ℝ)
60		icogelb 13375	. . . . . . . . . . . . . . . . 17 ⊢ ((𝐵 ∈ ℝ^* ∧ 𝐶 ∈ ℝ^* ∧ 𝑥 ∈ (𝐵[,)𝐶)) → 𝐵 ≤ 𝑥)
61	43, 38, 44, 60	syl3anc 1372	. . . . . . . . . . . . . . . 16 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) → 𝐵 ≤ 𝑥)
62	61	adantr 482	. . . . . . . . . . . . . . 15 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) ∧ ¬ 𝑥 = 𝐵) → 𝐵 ≤ 𝑥)
63		neqne 2949	. . . . . . . . . . . . . . . 16 ⊢ (¬ 𝑥 = 𝐵 → 𝑥 ≠ 𝐵)
64	63	adantl 483	. . . . . . . . . . . . . . 15 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) ∧ ¬ 𝑥 = 𝐵) → 𝑥 ≠ 𝐵)
65	59, 58, 62, 64	leneltd 11368	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) ∧ ¬ 𝑥 = 𝐵) → 𝐵 < 𝑥)
66	46	adantr 482	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) ∧ ¬ 𝑥 = 𝐵) → 𝑥 < 𝐶)
67	56, 57, 58, 65, 66	eliood 44211	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) ∧ ¬ 𝑥 = 𝐵) → 𝑥 ∈ (𝐵(,)𝐶))
68	12	sselda 3983	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵(,)𝐶)) → 𝑥 ∈ (𝐴 ∩ (𝐵(,)𝐷)))
69		elun1 4177	. . . . . . . . . . . . . 14 ⊢ (𝑥 ∈ (𝐴 ∩ (𝐵(,)𝐷)) → 𝑥 ∈ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))
70	68, 69	syl 17	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵(,)𝐶)) → 𝑥 ∈ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))
71	55, 67, 70	syl2anc 585	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) ∧ ¬ 𝑥 = 𝐵) → 𝑥 ∈ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))
72	54, 71	pm2.61dan 812	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) → 𝑥 ∈ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))
73	47, 72	elind 4195	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) → 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})))
74	24	adantr 482	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑥 = 𝐵) → 𝐵 ∈ (𝐵[,)𝐶))
75	48, 74	eqeltrd 2834	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑥 = 𝐵) → 𝑥 ∈ (𝐵[,)𝐶))
76	75	adantlr 714	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))) ∧ 𝑥 = 𝐵) → 𝑥 ∈ (𝐵[,)𝐶))
77		ioossico 13415	. . . . . . . . . . . 12 ⊢ (𝐵(,)𝐶) ⊆ (𝐵[,)𝐶)
78	20	ad2antrr 725	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))) ∧ ¬ 𝑥 = 𝐵) → 𝐵 ∈ ℝ^*)
79	21	ad2antrr 725	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))) ∧ ¬ 𝑥 = 𝐵) → 𝐶 ∈ ℝ^*)
80		elinel1 4196	. . . . . . . . . . . . . . 15 ⊢ (𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})) → 𝑥 ∈ (-∞(,)𝐶))
81	80	elioored 44262	. . . . . . . . . . . . . 14 ⊢ (𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})) → 𝑥 ∈ ℝ)
82	81	ad2antlr 726	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))) ∧ ¬ 𝑥 = 𝐵) → 𝑥 ∈ ℝ)
83	1	ad2antrr 725	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))) ∧ ¬ 𝑥 = 𝐵) → 𝐷 ∈ ℝ^*)
84		elinel2 4197	. . . . . . . . . . . . . . . . 17 ⊢ (𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})) → 𝑥 ∈ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))
85		id 22	. . . . . . . . . . . . . . . . . 18 ⊢ (¬ 𝑥 = 𝐵 → ¬ 𝑥 = 𝐵)
86		velsn 4645	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑥 ∈ {𝐵} ↔ 𝑥 = 𝐵)
87	85, 86	sylnibr 329	. . . . . . . . . . . . . . . . 17 ⊢ (¬ 𝑥 = 𝐵 → ¬ 𝑥 ∈ {𝐵})
88		elunnel2 4151	. . . . . . . . . . . . . . . . 17 ⊢ ((𝑥 ∈ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}) ∧ ¬ 𝑥 ∈ {𝐵}) → 𝑥 ∈ (𝐴 ∩ (𝐵(,)𝐷)))
89	84, 87, 88	syl2an 597	. . . . . . . . . . . . . . . 16 ⊢ ((𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})) ∧ ¬ 𝑥 = 𝐵) → 𝑥 ∈ (𝐴 ∩ (𝐵(,)𝐷)))
90	13, 89	sselid 3981	. . . . . . . . . . . . . . 15 ⊢ ((𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})) ∧ ¬ 𝑥 = 𝐵) → 𝑥 ∈ (𝐵(,)𝐷))
91	90	adantll 713	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))) ∧ ¬ 𝑥 = 𝐵) → 𝑥 ∈ (𝐵(,)𝐷))
92		ioogtlb 44208	. . . . . . . . . . . . . 14 ⊢ ((𝐵 ∈ ℝ^* ∧ 𝐷 ∈ ℝ^* ∧ 𝑥 ∈ (𝐵(,)𝐷)) → 𝐵 < 𝑥)
93	78, 83, 91, 92	syl3anc 1372	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))) ∧ ¬ 𝑥 = 𝐵) → 𝐵 < 𝑥)
94	36	a1i 11	. . . . . . . . . . . . . . 15 ⊢ ((𝜑 ∧ 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))) → -∞ ∈ ℝ^*)
95	21	adantr 482	. . . . . . . . . . . . . . 15 ⊢ ((𝜑 ∧ 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))) → 𝐶 ∈ ℝ^*)
96	80	adantl 483	. . . . . . . . . . . . . . 15 ⊢ ((𝜑 ∧ 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))) → 𝑥 ∈ (-∞(,)𝐶))
97		iooltub 44223	. . . . . . . . . . . . . . 15 ⊢ ((-∞ ∈ ℝ^* ∧ 𝐶 ∈ ℝ^* ∧ 𝑥 ∈ (-∞(,)𝐶)) → 𝑥 < 𝐶)
98	94, 95, 96, 97	syl3anc 1372	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))) → 𝑥 < 𝐶)
99	98	adantr 482	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))) ∧ ¬ 𝑥 = 𝐵) → 𝑥 < 𝐶)
100	78, 79, 82, 93, 99	eliood 44211	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))) ∧ ¬ 𝑥 = 𝐵) → 𝑥 ∈ (𝐵(,)𝐶))
101	77, 100	sselid 3981	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))) ∧ ¬ 𝑥 = 𝐵) → 𝑥 ∈ (𝐵[,)𝐶))
102	76, 101	pm2.61dan 812	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))) → 𝑥 ∈ (𝐵[,)𝐶))
103	73, 102	impbida 800	. . . . . . . . 9 ⊢ (𝜑 → (𝑥 ∈ (𝐵[,)𝐶) ↔ 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))))
104	103	eqrdv 2731	. . . . . . . 8 ⊢ (𝜑 → (𝐵[,)𝐶) = ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})))
105		retop 24278	. . . . . . . . . 10 ⊢ (topGen‘ran (,)) ∈ Top
106	105	a1i 11	. . . . . . . . 9 ⊢ (𝜑 → (topGen‘ran (,)) ∈ Top)
107	32	a1i 11	. . . . . . . . 9 ⊢ (𝜑 → ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}) ∈ V)
108		iooretop 24282	. . . . . . . . . 10 ⊢ (-∞(,)𝐶) ∈ (topGen‘ran (,))
109	108	a1i 11	. . . . . . . . 9 ⊢ (𝜑 → (-∞(,)𝐶) ∈ (topGen‘ran (,)))
110		elrestr 17374	. . . . . . . . 9 ⊢ (((topGen‘ran (,)) ∈ Top ∧ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}) ∈ V ∧ (-∞(,)𝐶) ∈ (topGen‘ran (,))) → ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})) ∈ ((topGen‘ran (,)) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})))
111	106, 107, 109, 110	syl3anc 1372	. . . . . . . 8 ⊢ (𝜑 → ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})) ∈ ((topGen‘ran (,)) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})))
112	104, 111	eqeltrd 2834	. . . . . . 7 ⊢ (𝜑 → (𝐵[,)𝐶) ∈ ((topGen‘ran (,)) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})))
113	17	tgioo2 24319	. . . . . . . . 9 ⊢ (topGen‘ran (,)) = ((TopOpen‘ℂ_fld) ↾_t ℝ)
114	113	oveq1i 7419	. . . . . . . 8 ⊢ ((topGen‘ran (,)) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})) = (((TopOpen‘ℂ_fld) ↾_t ℝ) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))
115	28	a1i 11	. . . . . . . . 9 ⊢ (𝜑 → (TopOpen‘ℂ_fld) ∈ Top)
116		ioossre 13385	. . . . . . . . . . . 12 ⊢ (𝐵(,)𝐷) ⊆ ℝ
117	13, 116	sstri 3992	. . . . . . . . . . 11 ⊢ (𝐴 ∩ (𝐵(,)𝐷)) ⊆ ℝ
118	117	a1i 11	. . . . . . . . . 10 ⊢ (𝜑 → (𝐴 ∩ (𝐵(,)𝐷)) ⊆ ℝ)
119	19	snssd 4813	. . . . . . . . . 10 ⊢ (𝜑 → {𝐵} ⊆ ℝ)
120	118, 119	unssd 4187	. . . . . . . . 9 ⊢ (𝜑 → ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}) ⊆ ℝ)
121		reex 11201	. . . . . . . . . 10 ⊢ ℝ ∈ V
122	121	a1i 11	. . . . . . . . 9 ⊢ (𝜑 → ℝ ∈ V)
123		restabs 22669	. . . . . . . . 9 ⊢ (((TopOpen‘ℂ_fld) ∈ Top ∧ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}) ⊆ ℝ ∧ ℝ ∈ V) → (((TopOpen‘ℂ_fld) ↾_t ℝ) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})) = ((TopOpen‘ℂ_fld) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})))
124	115, 120, 122, 123	syl3anc 1372	. . . . . . . 8 ⊢ (𝜑 → (((TopOpen‘ℂ_fld) ↾_t ℝ) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})) = ((TopOpen‘ℂ_fld) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})))
125	114, 124	eqtrid 2785	. . . . . . 7 ⊢ (𝜑 → ((topGen‘ran (,)) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})) = ((TopOpen‘ℂ_fld) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})))
126	112, 125	eleqtrd 2836	. . . . . 6 ⊢ (𝜑 → (𝐵[,)𝐶) ∈ ((TopOpen‘ℂ_fld) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})))
127		isopn3i 22586	. . . . . 6 ⊢ ((((TopOpen‘ℂ_fld) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})) ∈ Top ∧ (𝐵[,)𝐶) ∈ ((TopOpen‘ℂ_fld) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))) → ((int‘((TopOpen‘ℂ_fld) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})))‘(𝐵[,)𝐶)) = (𝐵[,)𝐶))
128	35, 126, 127	syl2anc 585	. . . . 5 ⊢ (𝜑 → ((int‘((TopOpen‘ℂ_fld) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})))‘(𝐵[,)𝐶)) = (𝐵[,)𝐶))
129	27, 128	eqtr2d 2774	. . . 4 ⊢ (𝜑 → (𝐵[,)𝐶) = ((int‘((TopOpen‘ℂ_fld) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})))‘((𝐵(,)𝐶) ∪ {𝐵})))
130	24, 129	eleqtrd 2836	. . 3 ⊢ (𝜑 → 𝐵 ∈ ((int‘((TopOpen‘ℂ_fld) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})))‘((𝐵(,)𝐶) ∪ {𝐵})))
131	10, 12, 16, 17, 18, 130	limcres 25403	. 2 ⊢ (𝜑 → (((𝐹 ↾ (𝐵(,)𝐷)) ↾ (𝐵(,)𝐶)) lim_ℂ 𝐵) = ((𝐹 ↾ (𝐵(,)𝐷)) lim_ℂ 𝐵))
132	7, 131	eqtrd 2773	1 ⊢ (𝜑 → ((𝐹 ↾ (𝐵(,)𝐶)) lim_ℂ 𝐵) = ((𝐹 ↾ (𝐵(,)𝐷)) lim_ℂ 𝐵))

Colors of variables: wff setvar class

Syntax hints: ¬ wn 3 → wi 4 ∧ wa 397 = wceq 1542 ∈ wcel 2107 ≠ wne 2941 Vcvv 3475 ∪ cun 3947 ∩ cin 3948 ⊆ wss 3949 {csn 4629 class class class wbr 5149 ran crn 5678 ↾ cres 5679 ⟶wf 6540 ‘cfv 6544 (class class class)co 7409 ℂcc 11108 ℝcr 11109 -∞cmnf 11246 ℝ^*cxr 11247 < clt 11248 ≤ cle 11249 (,)cioo 13324 [,)cico 13326 ↾_t crest 17366 TopOpenctopn 17367 topGenctg 17383 ℂ_fldccnfld 20944 Topctop 22395 intcnt 22521 lim_ℂ climc 25379

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2109 ax-9 2117 ax-10 2138 ax-11 2155 ax-12 2172 ax-ext 2704 ax-rep 5286 ax-sep 5300 ax-nul 5307 ax-pow 5364 ax-pr 5428 ax-un 7725 ax-cnex 11166 ax-resscn 11167 ax-1cn 11168 ax-icn 11169 ax-addcl 11170 ax-addrcl 11171 ax-mulcl 11172 ax-mulrcl 11173 ax-mulcom 11174 ax-addass 11175 ax-mulass 11176 ax-distr 11177 ax-i2m1 11178 ax-1ne0 11179 ax-1rid 11180 ax-rnegex 11181 ax-rrecex 11182 ax-cnre 11183 ax-pre-lttri 11184 ax-pre-lttrn 11185 ax-pre-ltadd 11186 ax-pre-mulgt0 11187 ax-pre-sup 11188

This theorem depends on definitions: df-bi 206 df-an 398 df-or 847 df-3or 1089 df-3an 1090 df-tru 1545 df-fal 1555 df-ex 1783 df-nf 1787 df-sb 2069 df-mo 2535 df-eu 2564 df-clab 2711 df-cleq 2725 df-clel 2811 df-nfc 2886 df-ne 2942 df-nel 3048 df-ral 3063 df-rex 3072 df-rmo 3377 df-reu 3378 df-rab 3434 df-v 3477 df-sbc 3779 df-csb 3895 df-dif 3952 df-un 3954 df-in 3956 df-ss 3966 df-pss 3968 df-nul 4324 df-if 4530 df-pw 4605 df-sn 4630 df-pr 4632 df-tp 4634 df-op 4636 df-uni 4910 df-int 4952 df-iun 5000 df-br 5150 df-opab 5212 df-mpt 5233 df-tr 5267 df-id 5575 df-eprel 5581 df-po 5589 df-so 5590 df-fr 5632 df-we 5634 df-xp 5683 df-rel 5684 df-cnv 5685 df-co 5686 df-dm 5687 df-rn 5688 df-res 5689 df-ima 5690 df-pred 6301 df-ord 6368 df-on 6369 df-lim 6370 df-suc 6371 df-iota 6496 df-fun 6546 df-fn 6547 df-f 6548 df-f1 6549 df-fo 6550 df-f1o 6551 df-fv 6552 df-riota 7365 df-ov 7412 df-oprab 7413 df-mpo 7414 df-om 7856 df-1st 7975 df-2nd 7976 df-frecs 8266 df-wrecs 8297 df-recs 8371 df-rdg 8410 df-1o 8466 df-er 8703 df-map 8822 df-pm 8823 df-en 8940 df-dom 8941 df-sdom 8942 df-fin 8943 df-fi 9406 df-sup 9437 df-inf 9438 df-pnf 11250 df-mnf 11251 df-xr 11252 df-ltxr 11253 df-le 11254 df-sub 11446 df-neg 11447 df-div 11872 df-nn 12213 df-2 12275 df-3 12276 df-4 12277 df-5 12278 df-6 12279 df-7 12280 df-8 12281 df-9 12282 df-n0 12473 df-z 12559 df-dec 12678 df-uz 12823 df-q 12933 df-rp 12975 df-xneg 13092 df-xadd 13093 df-xmul 13094 df-ioo 13328 df-ico 13330 df-icc 13331 df-fz 13485 df-seq 13967 df-exp 14028 df-cj 15046 df-re 15047 df-im 15048 df-sqrt 15182 df-abs 15183 df-struct 17080 df-slot 17115 df-ndx 17127 df-base 17145 df-plusg 17210 df-mulr 17211 df-starv 17212 df-tset 17216 df-ple 17217 df-ds 17219 df-unif 17220 df-rest 17368 df-topn 17369 df-topgen 17389 df-psmet 20936 df-xmet 20937 df-met 20938 df-bl 20939 df-mopn 20940 df-cnfld 20945 df-top 22396 df-topon 22413 df-topsp 22435 df-bases 22449 df-ntr 22524 df-cnp 22732 df-xms 23826 df-ms 23827 df-limc 25383

This theorem is referenced by: fouriersw 44947

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