limcresioolb - Mathbox for Glauco Siliprandi

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Theorem limcresioolb 46092

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 13328	. . . . . 6 ⊢ ((𝐷 ∈ ℝ^* ∧ 𝐶 ≤ 𝐷) → (𝐵(,)𝐶) ⊆ (𝐵(,)𝐷))
4	1, 2, 3	syl2anc 585	. . . . 5 ⊢ (𝜑 → (𝐵(,)𝐶) ⊆ (𝐵(,)𝐷))
5	4	resabs1d 5968	. . . 4 ⊢ (𝜑 → ((𝐹 ↾ (𝐵(,)𝐷)) ↾ (𝐵(,)𝐶)) = (𝐹 ↾ (𝐵(,)𝐶)))
6	5	eqcomd 2743	. . 3 ⊢ (𝜑 → (𝐹 ↾ (𝐵(,)𝐶)) = ((𝐹 ↾ (𝐵(,)𝐷)) ↾ (𝐵(,)𝐶)))
7	6	oveq1d 7376	. 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 6704	. . . 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 4182	. . 3 ⊢ (𝜑 → (𝐵(,)𝐶) ⊆ (𝐴 ∩ (𝐵(,)𝐷)))
13		inss2 4179	. . . . 5 ⊢ (𝐴 ∩ (𝐵(,)𝐷)) ⊆ (𝐵(,)𝐷)
14		ioosscn 13355	. . . . 5 ⊢ (𝐵(,)𝐷) ⊆ ℂ
15	13, 14	sstri 3932	. . . 4 ⊢ (𝐴 ∩ (𝐵(,)𝐷)) ⊆ ℂ
16	15	a1i 11	. . 3 ⊢ (𝜑 → (𝐴 ∩ (𝐵(,)𝐷)) ⊆ ℂ)
17		eqid 2737	. . 3 ⊢ (TopOpen‘ℂ_fld) = (TopOpen‘ℂ_fld)
18		eqid 2737	. . 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 11189	. . . . 5 ⊢ (𝜑 → 𝐵 ∈ ℝ^*)
21		limcresioolb.c	. . . . 5 ⊢ (𝜑 → 𝐶 ∈ ℝ^*)
22		limcresioolb.bltc	. . . . 5 ⊢ (𝜑 → 𝐵 < 𝐶)
23		lbico1 13347	. . . . 5 ⊢ ((𝐵 ∈ ℝ^* ∧ 𝐶 ∈ ℝ^* ∧ 𝐵 < 𝐶) → 𝐵 ∈ (𝐵[,)𝐶))
24	20, 21, 22, 23	syl3anc 1374	. . . 4 ⊢ (𝜑 → 𝐵 ∈ (𝐵[,)𝐶))
25		snunioo1 45963	. . . . . . 7 ⊢ ((𝐵 ∈ ℝ^* ∧ 𝐶 ∈ ℝ^* ∧ 𝐵 < 𝐶) → ((𝐵(,)𝐶) ∪ {𝐵}) = (𝐵[,)𝐶))
26	20, 21, 22, 25	syl3anc 1374	. . . . . 6 ⊢ (𝜑 → ((𝐵(,)𝐶) ∪ {𝐵}) = (𝐵[,)𝐶))
27	26	fveq2d 6839	. . . . 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 24761	. . . . . . . 8 ⊢ (TopOpen‘ℂ_fld) ∈ Top
29		ovex 7394	. . . . . . . . . 10 ⊢ (𝐵(,)𝐷) ∈ V
30	29	inex2 5256	. . . . . . . . 9 ⊢ (𝐴 ∩ (𝐵(,)𝐷)) ∈ V
31		snex 5377	. . . . . . . . 9 ⊢ {𝐵} ∈ V
32	30, 31	unex 7692	. . . . . . . 8 ⊢ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}) ∈ V
33		resttop 23138	. . . . . . . 8 ⊢ (((TopOpen‘ℂ_fld) ∈ Top ∧ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}) ∈ V) → ((TopOpen‘ℂ_fld) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})) ∈ Top)
34	28, 32, 33	mp2an 693	. . . . . . 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 11196	. . . . . . . . . . . . 13 ⊢ -∞ ∈ ℝ^*
37	36	a1i 11	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) → -∞ ∈ ℝ^*)
38	21	adantr 480	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) → 𝐶 ∈ ℝ^*)
39		icossre 13375	. . . . . . . . . . . . . 14 ⊢ ((𝐵 ∈ ℝ ∧ 𝐶 ∈ ℝ^*) → (𝐵[,)𝐶) ⊆ ℝ)
40	19, 21, 39	syl2anc 585	. . . . . . . . . . . . 13 ⊢ (𝜑 → (𝐵[,)𝐶) ⊆ ℝ)
41	40	sselda 3922	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) → 𝑥 ∈ ℝ)
42	41	mnfltd 13069	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) → -∞ < 𝑥)
43	20	adantr 480	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) → 𝐵 ∈ ℝ^*)
44		simpr 484	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) → 𝑥 ∈ (𝐵[,)𝐶))
45		icoltub 45959	. . . . . . . . . . . . 13 ⊢ ((𝐵 ∈ ℝ^* ∧ 𝐶 ∈ ℝ^* ∧ 𝑥 ∈ (𝐵[,)𝐶)) → 𝑥 < 𝐶)
46	43, 38, 44, 45	syl3anc 1374	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) → 𝑥 < 𝐶)
47	37, 38, 41, 42, 46	eliood 45949	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) → 𝑥 ∈ (-∞(,)𝐶))
48		simpr 484	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑥 = 𝐵) → 𝑥 = 𝐵)
49		snidg 4605	. . . . . . . . . . . . . . . 16 ⊢ (𝐵 ∈ ℝ → 𝐵 ∈ {𝐵})
50		elun2 4124	. . . . . . . . . . . . . . . 16 ⊢ (𝐵 ∈ {𝐵} → 𝐵 ∈ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))
51	19, 49, 50	3syl 18	. . . . . . . . . . . . . . 15 ⊢ (𝜑 → 𝐵 ∈ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))
52	51	adantr 480	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑥 = 𝐵) → 𝐵 ∈ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))
53	48, 52	eqeltrd 2837	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑥 = 𝐵) → 𝑥 ∈ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))
54	53	adantlr 716	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) ∧ 𝑥 = 𝐵) → 𝑥 ∈ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))
55		simpll 767	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) ∧ ¬ 𝑥 = 𝐵) → 𝜑)
56	43	adantr 480	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) ∧ ¬ 𝑥 = 𝐵) → 𝐵 ∈ ℝ^*)
57	38	adantr 480	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) ∧ ¬ 𝑥 = 𝐵) → 𝐶 ∈ ℝ^*)
58	41	adantr 480	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) ∧ ¬ 𝑥 = 𝐵) → 𝑥 ∈ ℝ)
59	19	ad2antrr 727	. . . . . . . . . . . . . . 15 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) ∧ ¬ 𝑥 = 𝐵) → 𝐵 ∈ ℝ)
60		icogelb 13343	. . . . . . . . . . . . . . . . 17 ⊢ ((𝐵 ∈ ℝ^* ∧ 𝐶 ∈ ℝ^* ∧ 𝑥 ∈ (𝐵[,)𝐶)) → 𝐵 ≤ 𝑥)
61	43, 38, 44, 60	syl3anc 1374	. . . . . . . . . . . . . . . 16 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) → 𝐵 ≤ 𝑥)
62	61	adantr 480	. . . . . . . . . . . . . . 15 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) ∧ ¬ 𝑥 = 𝐵) → 𝐵 ≤ 𝑥)
63		neqne 2941	. . . . . . . . . . . . . . . 16 ⊢ (¬ 𝑥 = 𝐵 → 𝑥 ≠ 𝐵)
64	63	adantl 481	. . . . . . . . . . . . . . 15 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) ∧ ¬ 𝑥 = 𝐵) → 𝑥 ≠ 𝐵)
65	59, 58, 62, 64	leneltd 11294	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) ∧ ¬ 𝑥 = 𝐵) → 𝐵 < 𝑥)
66	46	adantr 480	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) ∧ ¬ 𝑥 = 𝐵) → 𝑥 < 𝐶)
67	56, 57, 58, 65, 66	eliood 45949	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) ∧ ¬ 𝑥 = 𝐵) → 𝑥 ∈ (𝐵(,)𝐶))
68	12	sselda 3922	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵(,)𝐶)) → 𝑥 ∈ (𝐴 ∩ (𝐵(,)𝐷)))
69		elun1 4123	. . . . . . . . . . . . . 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 813	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) → 𝑥 ∈ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))
73	47, 72	elind 4141	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑥 ∈ (𝐵[,)𝐶)) → 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})))
74	24	adantr 480	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑥 = 𝐵) → 𝐵 ∈ (𝐵[,)𝐶))
75	48, 74	eqeltrd 2837	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑥 = 𝐵) → 𝑥 ∈ (𝐵[,)𝐶))
76	75	adantlr 716	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))) ∧ 𝑥 = 𝐵) → 𝑥 ∈ (𝐵[,)𝐶))
77		ioossico 13385	. . . . . . . . . . . 12 ⊢ (𝐵(,)𝐶) ⊆ (𝐵[,)𝐶)
78	20	ad2antrr 727	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))) ∧ ¬ 𝑥 = 𝐵) → 𝐵 ∈ ℝ^*)
79	21	ad2antrr 727	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))) ∧ ¬ 𝑥 = 𝐵) → 𝐶 ∈ ℝ^*)
80		elinel1 4142	. . . . . . . . . . . . . . 15 ⊢ (𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})) → 𝑥 ∈ (-∞(,)𝐶))
81	80	elioored 46000	. . . . . . . . . . . . . 14 ⊢ (𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})) → 𝑥 ∈ ℝ)
82	81	ad2antlr 728	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))) ∧ ¬ 𝑥 = 𝐵) → 𝑥 ∈ ℝ)
83	1	ad2antrr 727	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))) ∧ ¬ 𝑥 = 𝐵) → 𝐷 ∈ ℝ^*)
84		elinel2 4143	. . . . . . . . . . . . . . . . 17 ⊢ (𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})) → 𝑥 ∈ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))
85		id 22	. . . . . . . . . . . . . . . . . 18 ⊢ (¬ 𝑥 = 𝐵 → ¬ 𝑥 = 𝐵)
86		velsn 4584	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑥 ∈ {𝐵} ↔ 𝑥 = 𝐵)
87	85, 86	sylnibr 329	. . . . . . . . . . . . . . . . 17 ⊢ (¬ 𝑥 = 𝐵 → ¬ 𝑥 ∈ {𝐵})
88		elunnel2 4096	. . . . . . . . . . . . . . . . 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 3920	. . . . . . . . . . . . . . 15 ⊢ ((𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})) ∧ ¬ 𝑥 = 𝐵) → 𝑥 ∈ (𝐵(,)𝐷))
91	90	adantll 715	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))) ∧ ¬ 𝑥 = 𝐵) → 𝑥 ∈ (𝐵(,)𝐷))
92		ioogtlb 45946	. . . . . . . . . . . . . 14 ⊢ ((𝐵 ∈ ℝ^* ∧ 𝐷 ∈ ℝ^* ∧ 𝑥 ∈ (𝐵(,)𝐷)) → 𝐵 < 𝑥)
93	78, 83, 91, 92	syl3anc 1374	. . . . . . . . . . . . 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 480	. . . . . . . . . . . . . . 15 ⊢ ((𝜑 ∧ 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))) → 𝐶 ∈ ℝ^*)
96	80	adantl 481	. . . . . . . . . . . . . . 15 ⊢ ((𝜑 ∧ 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))) → 𝑥 ∈ (-∞(,)𝐶))
97		iooltub 45961	. . . . . . . . . . . . . . 15 ⊢ ((-∞ ∈ ℝ^* ∧ 𝐶 ∈ ℝ^* ∧ 𝑥 ∈ (-∞(,)𝐶)) → 𝑥 < 𝐶)
98	94, 95, 96, 97	syl3anc 1374	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))) → 𝑥 < 𝐶)
99	98	adantr 480	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))) ∧ ¬ 𝑥 = 𝐵) → 𝑥 < 𝐶)
100	78, 79, 82, 93, 99	eliood 45949	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))) ∧ ¬ 𝑥 = 𝐵) → 𝑥 ∈ (𝐵(,)𝐶))
101	77, 100	sselid 3920	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))) ∧ ¬ 𝑥 = 𝐵) → 𝑥 ∈ (𝐵[,)𝐶))
102	76, 101	pm2.61dan 813	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))) → 𝑥 ∈ (𝐵[,)𝐶))
103	73, 102	impbida 801	. . . . . . . . 9 ⊢ (𝜑 → (𝑥 ∈ (𝐵[,)𝐶) ↔ 𝑥 ∈ ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}))))
104	103	eqrdv 2735	. . . . . . . 8 ⊢ (𝜑 → (𝐵[,)𝐶) = ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})))
105		retop 24739	. . . . . . . . . 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 24743	. . . . . . . . . 10 ⊢ (-∞(,)𝐶) ∈ (topGen‘ran (,))
109	108	a1i 11	. . . . . . . . 9 ⊢ (𝜑 → (-∞(,)𝐶) ∈ (topGen‘ran (,)))
110		elrestr 17385	. . . . . . . . 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 1374	. . . . . . . 8 ⊢ (𝜑 → ((-∞(,)𝐶) ∩ ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})) ∈ ((topGen‘ran (,)) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})))
112	104, 111	eqeltrd 2837	. . . . . . 7 ⊢ (𝜑 → (𝐵[,)𝐶) ∈ ((topGen‘ran (,)) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})))
113		tgioo4 24783	. . . . . . . . 9 ⊢ (topGen‘ran (,)) = ((TopOpen‘ℂ_fld) ↾_t ℝ)
114	113	oveq1i 7371	. . . . . . . 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 13354	. . . . . . . . . . . 12 ⊢ (𝐵(,)𝐷) ⊆ ℝ
117	13, 116	sstri 3932	. . . . . . . . . . 11 ⊢ (𝐴 ∩ (𝐵(,)𝐷)) ⊆ ℝ
118	117	a1i 11	. . . . . . . . . 10 ⊢ (𝜑 → (𝐴 ∩ (𝐵(,)𝐷)) ⊆ ℝ)
119	19	snssd 4753	. . . . . . . . . 10 ⊢ (𝜑 → {𝐵} ⊆ ℝ)
120	118, 119	unssd 4133	. . . . . . . . 9 ⊢ (𝜑 → ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵}) ⊆ ℝ)
121		reex 11123	. . . . . . . . . 10 ⊢ ℝ ∈ V
122	121	a1i 11	. . . . . . . . 9 ⊢ (𝜑 → ℝ ∈ V)
123		restabs 23143	. . . . . . . . 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 1374	. . . . . . . 8 ⊢ (𝜑 → (((TopOpen‘ℂ_fld) ↾_t ℝ) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})) = ((TopOpen‘ℂ_fld) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})))
125	114, 124	eqtrid 2784	. . . . . . 7 ⊢ (𝜑 → ((topGen‘ran (,)) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})) = ((TopOpen‘ℂ_fld) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})))
126	112, 125	eleqtrd 2839	. . . . . 6 ⊢ (𝜑 → (𝐵[,)𝐶) ∈ ((TopOpen‘ℂ_fld) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})))
127		isopn3i 23060	. . . . . 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 2773	. . . 4 ⊢ (𝜑 → (𝐵[,)𝐶) = ((int‘((TopOpen‘ℂ_fld) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})))‘((𝐵(,)𝐶) ∪ {𝐵})))
130	24, 129	eleqtrd 2839	. . 3 ⊢ (𝜑 → 𝐵 ∈ ((int‘((TopOpen‘ℂ_fld) ↾_t ((𝐴 ∩ (𝐵(,)𝐷)) ∪ {𝐵})))‘((𝐵(,)𝐶) ∪ {𝐵})))
131	10, 12, 16, 17, 18, 130	limcres 25866	. 2 ⊢ (𝜑 → (((𝐹 ↾ (𝐵(,)𝐷)) ↾ (𝐵(,)𝐶)) lim_ℂ 𝐵) = ((𝐹 ↾ (𝐵(,)𝐷)) lim_ℂ 𝐵))
132	7, 131	eqtrd 2772	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 395 = wceq 1542 ∈ wcel 2114 ≠ wne 2933 Vcvv 3430 ∪ cun 3888 ∩ cin 3889 ⊆ wss 3890 {csn 4568 class class class wbr 5086 ran crn 5626 ↾ cres 5627 ⟶wf 6489 ‘cfv 6493 (class class class)co 7361 ℂcc 11030 ℝcr 11031 -∞cmnf 11171 ℝ^*cxr 11172 < clt 11173 ≤ cle 11174 (,)cioo 13292 [,)cico 13294 ↾_t crest 17377 TopOpenctopn 17378 topGenctg 17394 ℂ_fldccnfld 21347 Topctop 22871 intcnt 22995 lim_ℂ climc 25842

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 5213 ax-sep 5232 ax-nul 5242 ax-pow 5303 ax-pr 5371 ax-un 7683 ax-cnex 11088 ax-resscn 11089 ax-1cn 11090 ax-icn 11091 ax-addcl 11092 ax-addrcl 11093 ax-mulcl 11094 ax-mulrcl 11095 ax-mulcom 11096 ax-addass 11097 ax-mulass 11098 ax-distr 11099 ax-i2m1 11100 ax-1ne0 11101 ax-1rid 11102 ax-rnegex 11103 ax-rrecex 11104 ax-cnre 11105 ax-pre-lttri 11106 ax-pre-lttrn 11107 ax-pre-ltadd 11108 ax-pre-mulgt0 11109 ax-pre-sup 11110

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-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-br 5087 df-opab 5149 df-mpt 5168 df-tr 5194 df-id 5520 df-eprel 5525 df-po 5533 df-so 5534 df-fr 5578 df-we 5580 df-xp 5631 df-rel 5632 df-cnv 5633 df-co 5634 df-dm 5635 df-rn 5636 df-res 5637 df-ima 5638 df-pred 6260 df-ord 6321 df-on 6322 df-lim 6323 df-suc 6324 df-iota 6449 df-fun 6495 df-fn 6496 df-f 6497 df-f1 6498 df-fo 6499 df-f1o 6500 df-fv 6501 df-riota 7318 df-ov 7364 df-oprab 7365 df-mpo 7366 df-om 7812 df-1st 7936 df-2nd 7937 df-frecs 8225 df-wrecs 8256 df-recs 8305 df-rdg 8343 df-1o 8399 df-er 8637 df-map 8769 df-pm 8770 df-en 8888 df-dom 8889 df-sdom 8890 df-fin 8891 df-fi 9318 df-sup 9349 df-inf 9350 df-pnf 11175 df-mnf 11176 df-xr 11177 df-ltxr 11178 df-le 11179 df-sub 11373 df-neg 11374 df-div 11802 df-nn 12169 df-2 12238 df-3 12239 df-4 12240 df-5 12241 df-6 12242 df-7 12243 df-8 12244 df-9 12245 df-n0 12432 df-z 12519 df-dec 12639 df-uz 12783 df-q 12893 df-rp 12937 df-xneg 13057 df-xadd 13058 df-xmul 13059 df-ioo 13296 df-ico 13298 df-icc 13299 df-fz 13456 df-seq 13958 df-exp 14018 df-cj 15055 df-re 15056 df-im 15057 df-sqrt 15191 df-abs 15192 df-struct 17111 df-slot 17146 df-ndx 17158 df-base 17174 df-plusg 17227 df-mulr 17228 df-starv 17229 df-tset 17233 df-ple 17234 df-ds 17236 df-unif 17237 df-rest 17379 df-topn 17380 df-topgen 17400 df-psmet 21339 df-xmet 21340 df-met 21341 df-bl 21342 df-mopn 21343 df-cnfld 21348 df-top 22872 df-topon 22889 df-topsp 22911 df-bases 22924 df-ntr 22998 df-cnp 23206 df-xms 24298 df-ms 24299 df-limc 25846

This theorem is referenced by: fouriersw 46680

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