limcresioolb - Mathbox for Glauco Siliprandi

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Theorem limcresioolb 46086

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 13325	. . . . . 6 ⊢ ((𝐷 ∈ ℝ^* ∧ 𝐶 ≤ 𝐷) → (𝐵(,)𝐶) ⊆ (𝐵(,)𝐷))
4	1, 2, 3	syl2anc 590	. . . . 5 ⊢ (𝜑 → (𝐵(,)𝐶) ⊆ (𝐵(,)𝐷))
5	4	resabs1d 5960	. . . 4 ⊢ (𝜑 → ((𝐹 ↾ (𝐵(,)𝐷)) ↾ (𝐵(,)𝐶)) = (𝐹 ↾ (𝐵(,)𝐶)))
6	5	eqcomd 2745	. . 3 ⊢ (𝜑 → (𝐹 ↾ (𝐵(,)𝐶)) = ((𝐹 ↾ (𝐵(,)𝐷)) ↾ (𝐵(,)𝐶)))
7	6	oveq1d 7371	. 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 6696	. . . 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 4169	. . 3 ⊢ (𝜑 → (𝐵(,)𝐶) ⊆ (𝐴 ∩ (𝐵(,)𝐷)))
13		inss2 4166	. . . . 5 ⊢ (𝐴 ∩ (𝐵(,)𝐷)) ⊆ (𝐵(,)𝐷)
14		ioosscn 13352	. . . . 5 ⊢ (𝐵(,)𝐷) ⊆ ℂ
15	13, 14	sstri 3924	. . . 4 ⊢ (𝐴 ∩ (𝐵(,)𝐷)) ⊆ ℂ
16	15	a1i 11	. . 3 ⊢ (𝜑 → (𝐴 ∩ (𝐵(,)𝐷)) ⊆ ℂ)
17		eqid 2739	. . 3 ⊢ (TopOpen‘ℂ_fld) = (TopOpen‘ℂ_fld)
18		eqid 2739	. . 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 11186	. . . . 5 ⊢ (𝜑 → 𝐵 ∈ ℝ^*)
21		limcresioolb.c	. . . . 5 ⊢ (𝜑 → 𝐶 ∈ ℝ^*)
22		limcresioolb.bltc	. . . . 5 ⊢ (𝜑 → 𝐵 < 𝐶)
23		lbico1 13344	. . . . 5 ⊢ ((𝐵 ∈ ℝ^* ∧ 𝐶 ∈ ℝ^* ∧ 𝐵 < 𝐶) → 𝐵 ∈ (𝐵[,)𝐶))
24	20, 21, 22, 23	syl3anc 1379	. . . 4 ⊢ (𝜑 → 𝐵 ∈ (𝐵[,)𝐶))
25		snunioo1 45957	. . . . . . 7 ⊢ ((𝐵 ∈ ℝ^* ∧ 𝐶 ∈ ℝ^* ∧ 𝐵 < 𝐶) → ((𝐵(,)𝐶) ∪ {𝐵}) = (𝐵[,)𝐶))
26	20, 21, 22, 25	syl3anc 1379	. . . . . 6 ⊢ (𝜑 → ((𝐵(,)𝐶) ∪ {𝐵}) = (𝐵[,)𝐶))
27	26	fveq2d 6831	. . . . 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 24766	. . . . . . . 8 ⊢ (TopOpen‘ℂ_fld) ∈ Top
29		ovex 7389	. . . . . . . . . 10 ⊢ (𝐵(,)𝐷) ∈ V
30	29	inex2 5246	. . . . . . . . 9 ⊢ (𝐴 ∩ (𝐵(,)𝐷)) ∈ V
31		snex 5368	. . . . . . . . 9 ⊢ {𝐵} ∈ V
32	30, 31	unex 7687	. . . . . . . 8 ⊢ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}) ∈ V
33		resttop 23143	. . . . . . . 8 ⊢ (((TopOpen‘ℂ_fld) ∈ Top ∧ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}) ∈ V) → ((TopOpen‘ℂ_fld) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})) ∈ Top)
34	28, 32, 33	mp2an 698	. . . . . . 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 11193	. . . . . . . . . . . . 13 ⊢ -∞ ∈ ℝ^*
37	36	a1i 11	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) → -∞ ∈ ℝ^*)
38	21	adantr 481	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) → 𝐶 ∈ ℝ^*)
39		icossre 13372	. . . . . . . . . . . . . 14 ⊢ ((𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ^*) → (𝐵[,)𝐶) ⊆ ℝ)
40	19, 21, 39	syl2anc 590	. . . . . . . . . . . . 13 ⊢ (𝜑 → (𝐵[,)𝐶) ⊆ ℝ)
41	40	sselda 3915	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) → 𝑥 ∈ ℝ)
42	41	mnfltd 13066	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) → -∞ < 𝑥)
43	20	adantr 481	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) → 𝐵 ∈ ℝ^*)
44		simpr 485	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) → 𝑥 ∈ (𝐵[,)𝐶))
45		icoltub 45953	. . . . . . . . . . . . 13 ⊢ ((𝐵 ∈ ℝ^* ∧ 𝐶 ∈ ℝ^* ∧ 𝑥 ∈ (𝐵[,)𝐶)) → 𝑥 < 𝐶)
46	43, 38, 44, 45	syl3anc 1379	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) → 𝑥 < 𝐶)
47	37, 38, 41, 42, 46	eliood 45943	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) → 𝑥 ∈ (-∞(,)𝐶))
48		simpr 485	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑥 = 𝐵) → 𝑥 = 𝐵)
49		snidg 4592	. . . . . . . . . . . . . . . 16 ⊢ (𝐵 ∈ ℝ → 𝐵 ∈ {𝐵})
50		elun2 4112	. . . . . . . . . . . . . . . 16 ⊢ (𝐵 ∈ {𝐵} → 𝐵 ∈ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))
51	19, 49, 50	3syl 18	. . . . . . . . . . . . . . 15 ⊢ (𝜑 → 𝐵 ∈ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))
52	51	adantr 481	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑥 = 𝐵) → 𝐵 ∈ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))
53	48, 52	eqeltrd 2839	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑥 = 𝐵) → 𝑥 ∈ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))
54	53	adantlr 721	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) ∧ 𝑥 = 𝐵) → 𝑥 ∈ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))
55		simpll 772	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) ∧ ¬ 𝑥 = 𝐵) → 𝜑)
56	43	adantr 481	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) ∧ ¬ 𝑥 = 𝐵) → 𝐵 ∈ ℝ^*)
57	38	adantr 481	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) ∧ ¬ 𝑥 = 𝐵) → 𝐶 ∈ ℝ^*)
58	41	adantr 481	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) ∧ ¬ 𝑥 = 𝐵) → 𝑥 ∈ ℝ)
59	19	ad2antrr 732	. . . . . . . . . . . . . . 15 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) ∧ ¬ 𝑥 = 𝐵) → 𝐵 ∈ ℝ)
60		icogelb 13340	. . . . . . . . . . . . . . . . 17 ⊢ ((𝐵 ∈ ℝ^* ∧ 𝐶 ∈ ℝ^* ∧ 𝑥 ∈ (𝐵[,)𝐶)) → 𝐵 ≤ 𝑥)
61	43, 38, 44, 60	syl3anc 1379	. . . . . . . . . . . . . . . 16 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) → 𝐵 ≤ 𝑥)
62	61	adantr 481	. . . . . . . . . . . . . . 15 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) ∧ ¬ 𝑥 = 𝐵) → 𝐵 ≤ 𝑥)
63		neqne 2942	. . . . . . . . . . . . . . . 16 ⊢ (¬ 𝑥 = 𝐵 → 𝑥 ≠ 𝐵)
64	63	adantl 482	. . . . . . . . . . . . . . 15 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) ∧ ¬ 𝑥 = 𝐵) → 𝑥 ≠ 𝐵)
65	59, 58, 62, 64	leneltd 11291	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) ∧ ¬ 𝑥 = 𝐵) → 𝐵 < 𝑥)
66	46	adantr 481	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) ∧ ¬ 𝑥 = 𝐵) → 𝑥 < 𝐶)
67	56, 57, 58, 65, 66	eliood 45943	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) ∧ ¬ 𝑥 = 𝐵) → 𝑥 ∈ (𝐵(,)𝐶))
68	12	sselda 3915	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵(,)𝐶)) → 𝑥 ∈ (𝐴 ∩ (𝐵(,)𝐷)))
69		elun1 4111	. . . . . . . . . . . . . 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 590	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) ∧ ¬ 𝑥 = 𝐵) → 𝑥 ∈ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))
72	54, 71	pm2.61dan 818	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) → 𝑥 ∈ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))
73	47, 72	elind 4129	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) → 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})))
74	24	adantr 481	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑥 = 𝐵) → 𝐵 ∈ (𝐵[,)𝐶))
75	48, 74	eqeltrd 2839	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑥 = 𝐵) → 𝑥 ∈ (𝐵[,)𝐶))
76	75	adantlr 721	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))) ∧ 𝑥 = 𝐵) → 𝑥 ∈ (𝐵[,)𝐶))
77		ioossico 13382	. . . . . . . . . . . 12 ⊢ (𝐵(,)𝐶) ⊆ (𝐵[,)𝐶)
78	20	ad2antrr 732	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))) ∧ ¬ 𝑥 = 𝐵) → 𝐵 ∈ ℝ^*)
79	21	ad2antrr 732	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))) ∧ ¬ 𝑥 = 𝐵) → 𝐶 ∈ ℝ^*)
80		elinel1 4130	. . . . . . . . . . . . . . 15 ⊢ (𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})) → 𝑥 ∈ (-∞(,)𝐶))
81	80	elioored 45994	. . . . . . . . . . . . . 14 ⊢ (𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})) → 𝑥 ∈ ℝ)
82	81	ad2antlr 733	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))) ∧ ¬ 𝑥 = 𝐵) → 𝑥 ∈ ℝ)
83	1	ad2antrr 732	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))) ∧ ¬ 𝑥 = 𝐵) → 𝐷 ∈ ℝ^*)
84		elinel2 4131	. . . . . . . . . . . . . . . . 17 ⊢ (𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})) → 𝑥 ∈ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))
85		id 22	. . . . . . . . . . . . . . . . . 18 ⊢ (¬ 𝑥 = 𝐵 → ¬ 𝑥 = 𝐵)
86		velsn 4571	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑥 ∈ {𝐵} ↔ 𝑥 = 𝐵)
87	85, 86	sylnibr 330	. . . . . . . . . . . . . . . . 17 ⊢ (¬ 𝑥 = 𝐵 → ¬ 𝑥 ∈ {𝐵})
88		elunnel2 4085	. . . . . . . . . . . . . . . . 17 ⊢ ((𝑥 ∈ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}) ∧ ¬ 𝑥 ∈ {𝐵}) → 𝑥 ∈ (𝐴 ∩ (𝐵(,)𝐷)))
89	84, 87, 88	syl2an 602	. . . . . . . . . . . . . . . 16 ⊢ ((𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})) ∧ ¬ 𝑥 = 𝐵) → 𝑥 ∈ (𝐴 ∩ (𝐵(,)𝐷)))
90	13, 89	sselid 3913	. . . . . . . . . . . . . . 15 ⊢ ((𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})) ∧ ¬ 𝑥 = 𝐵) → 𝑥 ∈ (𝐵(,)𝐷))
91	90	adantll 720	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))) ∧ ¬ 𝑥 = 𝐵) → 𝑥 ∈ (𝐵(,)𝐷))
92		ioogtlb 45940	. . . . . . . . . . . . . 14 ⊢ ((𝐵 ∈ ℝ^* ∧ 𝐷 ∈ ℝ^* ∧ 𝑥 ∈ (𝐵(,)𝐷)) → 𝐵 < 𝑥)
93	78, 83, 91, 92	syl3anc 1379	. . . . . . . . . . . . 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 481	. . . . . . . . . . . . . . 15 ⊢ ((𝜑 ∧ 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))) → 𝐶 ∈ ℝ^*)
96	80	adantl 482	. . . . . . . . . . . . . . 15 ⊢ ((𝜑 ∧ 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))) → 𝑥 ∈ (-∞(,)𝐶))
97		iooltub 45955	. . . . . . . . . . . . . . 15 ⊢ ((-∞ ∈ ℝ^* ∧ 𝐶 ∈ ℝ^* ∧ 𝑥 ∈ (-∞(,)𝐶)) → 𝑥 < 𝐶)
98	94, 95, 96, 97	syl3anc 1379	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))) → 𝑥 < 𝐶)
99	98	adantr 481	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))) ∧ ¬ 𝑥 = 𝐵) → 𝑥 < 𝐶)
100	78, 79, 82, 93, 99	eliood 45943	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))) ∧ ¬ 𝑥 = 𝐵) → 𝑥 ∈ (𝐵(,)𝐶))
101	77, 100	sselid 3913	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))) ∧ ¬ 𝑥 = 𝐵) → 𝑥 ∈ (𝐵[,)𝐶))
102	76, 101	pm2.61dan 818	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))) → 𝑥 ∈ (𝐵[,)𝐶))
103	73, 102	impbida 806	. . . . . . . . 9 ⊢ (𝜑 → (𝑥 ∈ (𝐵[,)𝐶) ↔ 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))))
104	103	eqrdv 2737	. . . . . . . 8 ⊢ (𝜑 → (𝐵[,)𝐶) = ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})))
105		retop 24744	. . . . . . . . . 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 24748	. . . . . . . . . 10 ⊢ (-∞(,)𝐶) ∈ (topGen‘ran (,))
109	108	a1i 11	. . . . . . . . 9 ⊢ (𝜑 → (-∞(,)𝐶) ∈ (topGen‘ran (,)))
110		elrestr 17382	. . . . . . . . 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 1379	. . . . . . . 8 ⊢ (𝜑 → ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})) ∈ ((topGen‘ran (,)) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})))
112	104, 111	eqeltrd 2839	. . . . . . 7 ⊢ (𝜑 → (𝐵[,)𝐶) ∈ ((topGen‘ran (,)) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})))
113		tgioo4 24788	. . . . . . . . 9 ⊢ (topGen‘ran (,)) = ((TopOpen‘ℂ_fld) ↾_t ℝ)
114	113	oveq1i 7366	. . . . . . . 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 13351	. . . . . . . . . . . 12 ⊢ (𝐵(,)𝐷) ⊆ ℝ
117	13, 116	sstri 3924	. . . . . . . . . . 11 ⊢ (𝐴 ∩ (𝐵(,)𝐷)) ⊆ ℝ
118	117	a1i 11	. . . . . . . . . 10 ⊢ (𝜑 → (𝐴 ∩ (𝐵(,)𝐷)) ⊆ ℝ)
119	19	snssd 4718	. . . . . . . . . 10 ⊢ (𝜑 → {𝐵} ⊆ ℝ)
120	118, 119	unssd 4121	. . . . . . . . 9 ⊢ (𝜑 → ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}) ⊆ ℝ)
121		reex 11120	. . . . . . . . . 10 ⊢ ℝ ∈ V
122	121	a1i 11	. . . . . . . . 9 ⊢ (𝜑 → ℝ ∈ V)
123		restabs 23148	. . . . . . . . 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 1379	. . . . . . . 8 ⊢ (𝜑 → (((TopOpen‘ℂ_fld) ↾_t ℝ) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})) = ((TopOpen‘ℂ_fld) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})))
125	114, 124	eqtrid 2786	. . . . . . 7 ⊢ (𝜑 → ((topGen‘ran (,)) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})) = ((TopOpen‘ℂ_fld) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})))
126	112, 125	eleqtrd 2841	. . . . . 6 ⊢ (𝜑 → (𝐵[,)𝐶) ∈ ((TopOpen‘ℂ_fld) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})))
127		isopn3i 23065	. . . . . 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 590	. . . . 5 ⊢ (𝜑 → ((int‘((TopOpen‘ℂ_fld) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})))‘(𝐵[,)𝐶)) = (𝐵[,)𝐶))
129	27, 128	eqtr2d 2775	. . . 4 ⊢ (𝜑 → (𝐵[,)𝐶) = ((int‘((TopOpen‘ℂ_fld) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})))‘((𝐵(,)𝐶) ∪ {𝐵})))
130	24, 129	eleqtrd 2841	. . 3 ⊢ (𝜑 → 𝐵 ∈ ((int‘((TopOpen‘ℂ_fld) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})))‘((𝐵(,)𝐶) ∪ {𝐵})))
131	10, 12, 16, 17, 18, 130	limcres 25871	. 2 ⊢ (𝜑 → (((𝐹 ↾ (𝐵(,)𝐷)) ↾ (𝐵(,)𝐶)) lim_ℂ 𝐵) = ((𝐹 ↾ (𝐵(,)𝐷)) lim_ℂ 𝐵))
132	7, 131	eqtrd 2774	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 396 = wceq 1547 ∈ wcel 2119 ≠ wne 2934 Vcvv 3431 ∪ cun 3881 ∩ cin 3882 ⊆ wss 3883 {csn 4555 class class class wbr 5072 ran crn 5619 ↾ cres 5620 ⟶wf 6481 ‘cfv 6485 (class class class)co 7356 ℂcc 11027 ℝcr 11028 -∞cmnf 11168 ℝ^*cxr 11169 < clt 11170 ≤ cle 11171 (,)cioo 13289 [,)cico 13291 ↾_t crest 17374 TopOpenctopn 17375 topGenctg 17391 ℂ_fldccnfld 21347 Topctop 22876 intcnt 23000 lim_ℂ climc 25847

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-10 2152 ax-11 2168 ax-12 2189 ax-ext 2711 ax-rep 5199 ax-sep 5218 ax-nul 5228 ax-pow 5294 ax-pr 5362 ax-un 7678 ax-cnex 11085 ax-resscn 11086 ax-1cn 11087 ax-icn 11088 ax-addcl 11089 ax-addrcl 11090 ax-mulcl 11091 ax-mulrcl 11092 ax-mulcom 11093 ax-addass 11094 ax-mulass 11095 ax-distr 11096 ax-i2m1 11097 ax-1ne0 11098 ax-1rid 11099 ax-rnegex 11100 ax-rrecex 11101 ax-cnre 11102 ax-pre-lttri 11103 ax-pre-lttrn 11104 ax-pre-ltadd 11105 ax-pre-mulgt0 11106 ax-pre-sup 11107

This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3or 1093 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-nf 1791 df-sb 2074 df-mo 2543 df-eu 2573 df-clab 2718 df-cleq 2731 df-clel 2814 df-nfc 2888 df-ne 2935 df-nel 3039 df-ral 3054 df-rex 3064 df-rmo 3344 df-reu 3345 df-rab 3392 df-v 3433 df-sbc 3724 df-csb 3832 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3903 df-nul 4262 df-if 4455 df-pw 4531 df-sn 4556 df-pr 4558 df-tp 4560 df-op 4562 df-uni 4839 df-int 4878 df-iun 4923 df-br 5073 df-opab 5135 df-mpt 5154 df-tr 5180 df-id 5513 df-eprel 5518 df-po 5526 df-so 5527 df-fr 5571 df-we 5573 df-xp 5624 df-rel 5625 df-cnv 5626 df-co 5627 df-dm 5628 df-rn 5629 df-res 5630 df-ima 5631 df-pred 6252 df-ord 6313 df-on 6314 df-lim 6315 df-suc 6316 df-iota 6441 df-fun 6487 df-fn 6488 df-f 6489 df-f1 6490 df-fo 6491 df-f1o 6492 df-fv 6493 df-riota 7313 df-ov 7359 df-oprab 7360 df-mpo 7361 df-om 7807 df-1st 7931 df-2nd 7932 df-frecs 8221 df-wrecs 8252 df-recs 8301 df-rdg 8339 df-1o 8395 df-er 8633 df-map 8765 df-pm 8766 df-en 8884 df-dom 8885 df-sdom 8886 df-fin 8887 df-fi 9314 df-sup 9345 df-inf 9346 df-pnf 11172 df-mnf 11173 df-xr 11174 df-ltxr 11175 df-le 11176 df-sub 11370 df-neg 11371 df-div 11799 df-nn 12166 df-2 12235 df-3 12236 df-4 12237 df-5 12238 df-6 12239 df-7 12240 df-8 12241 df-9 12242 df-n0 12429 df-z 12516 df-dec 12636 df-uz 12780 df-q 12890 df-rp 12934 df-xneg 13054 df-xadd 13055 df-xmul 13056 df-ioo 13293 df-ico 13295 df-icc 13296 df-fz 13453 df-seq 13955 df-exp 14015 df-cj 15052 df-re 15053 df-im 15054 df-sqrt 15188 df-abs 15189 df-struct 17108 df-slot 17143 df-ndx 17155 df-base 17171 df-plusg 17224 df-mulr 17225 df-starv 17226 df-tset 17230 df-ple 17231 df-ds 17233 df-unif 17234 df-rest 17376 df-topn 17377 df-topgen 17397 df-psmet 21339 df-xmet 21340 df-met 21341 df-bl 21342 df-mopn 21343 df-cnfld 21348 df-top 22877 df-topon 22894 df-topsp 22916 df-bases 22929 df-ntr 23003 df-cnp 23211 df-xms 24303 df-ms 24304 df-limc 25851

This theorem is referenced by: fouriersw 46674

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