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Theorem dvreslem 25273

Description: Lemma for dvres 25275. (Contributed by Mario Carneiro, 8-Aug-2014.) (Revised by Mario Carneiro, 28-Dec-2016.) Commute the consequent and shorten proof. (Revised by Peter Mazsa, 2-Oct-2022.)

**Hypotheses**
Ref	Expression
dvres.k	⊢ 𝐾 = (TopOpen‘ℂ_fld)
dvres.t	⊢ 𝑇 = (𝐾 ↾_t 𝑆)
dvres.g	⊢ 𝐺 = (𝑧 ∈ (𝐴 ∖ {𝑥}) ↦ (((𝐹‘𝑧) − (𝐹‘𝑥)) / (𝑧 − 𝑥)))
dvres.s	⊢ (𝜑 → 𝑆 ⊆ ℂ)
dvres.f	⊢ (𝜑 → 𝐹:𝐴⟶ℂ)
dvres.a	⊢ (𝜑 → 𝐴 ⊆ 𝑆)
dvres.b	⊢ (𝜑 → 𝐵 ⊆ 𝑆)
dvres.y	⊢ (𝜑 → 𝑦 ∈ ℂ)

**Assertion**
Ref	Expression
dvreslem	⊢ (𝜑 → (𝑥(𝑆 D (𝐹 ↾ 𝐵))𝑦 ↔ (𝑥 ∈ ((int‘𝑇)‘𝐵) ∧ 𝑥(𝑆 D 𝐹)𝑦)))

Distinct variable groups: 𝑥,𝑦,𝑧,𝐴 𝑥,𝐵,𝑦,𝑧 𝑥,𝐹,𝑦,𝑧 𝑥,𝑆,𝑦,𝑧 𝑥,𝑇,𝑦,𝑧 𝑧,𝐾 𝜑,𝑧 Allowed substitution hints: 𝜑(𝑥,𝑦) 𝐺(𝑥,𝑦,𝑧) 𝐾(𝑥,𝑦)

**Proof of Theorem dvreslem**
Step	Hyp	Ref	Expression
1		difss 4091	. . . . . . . . . . . . . . 15 ⊢ ((𝐴 ∩ 𝐵) ∖ {𝑥}) ⊆ (𝐴 ∩ 𝐵)
2		inss2 4189	. . . . . . . . . . . . . . 15 ⊢ (𝐴 ∩ 𝐵) ⊆ 𝐵
3	1, 2	sstri 3953	. . . . . . . . . . . . . 14 ⊢ ((𝐴 ∩ 𝐵) ∖ {𝑥}) ⊆ 𝐵
4		simpr 485	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) ∧ 𝑧 ∈ ((𝐴 ∩ 𝐵) ∖ {𝑥})) → 𝑧 ∈ ((𝐴 ∩ 𝐵) ∖ {𝑥}))
5	3, 4	sselid 3942	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) ∧ 𝑧 ∈ ((𝐴 ∩ 𝐵) ∖ {𝑥})) → 𝑧 ∈ 𝐵)
6	5	fvresd 6862	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) ∧ 𝑧 ∈ ((𝐴 ∩ 𝐵) ∖ {𝑥})) → ((𝐹 ↾ 𝐵)‘𝑧) = (𝐹‘𝑧))
7		dvres.t	. . . . . . . . . . . . . . . . . 18 ⊢ 𝑇 = (𝐾 ↾_t 𝑆)
8		dvres.k	. . . . . . . . . . . . . . . . . . . 20 ⊢ 𝐾 = (TopOpen‘ℂ_fld)
9	8	cnfldtop 24147	. . . . . . . . . . . . . . . . . . 19 ⊢ 𝐾 ∈ Top
10		dvres.s	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝜑 → 𝑆 ⊆ ℂ)
11		cnex 11132	. . . . . . . . . . . . . . . . . . . 20 ⊢ ℂ ∈ V
12		ssexg 5280	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((𝑆 ⊆ ℂ ∧ ℂ ∈ V) → 𝑆 ∈ V)
13	10, 11, 12	sylancl 586	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝜑 → 𝑆 ∈ V)
14		resttop 22511	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝐾 ∈ Top ∧ 𝑆 ∈ V) → (𝐾 ↾_t 𝑆) ∈ Top)
15	9, 13, 14	sylancr 587	. . . . . . . . . . . . . . . . . 18 ⊢ (𝜑 → (𝐾 ↾_t 𝑆) ∈ Top)
16	7, 15	eqeltrid 2842	. . . . . . . . . . . . . . . . 17 ⊢ (𝜑 → 𝑇 ∈ Top)
17		inss1 4188	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝐴 ∩ 𝐵) ⊆ 𝐴
18		dvres.a	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝜑 → 𝐴 ⊆ 𝑆)
19	17, 18	sstrid 3955	. . . . . . . . . . . . . . . . . 18 ⊢ (𝜑 → (𝐴 ∩ 𝐵) ⊆ 𝑆)
20	8	cnfldtopon 24146	. . . . . . . . . . . . . . . . . . . . 21 ⊢ 𝐾 ∈ (TopOn‘ℂ)
21		resttopon 22512	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((𝐾 ∈ (TopOn‘ℂ) ∧ 𝑆 ⊆ ℂ) → (𝐾 ↾_t 𝑆) ∈ (TopOn‘𝑆))
22	20, 10, 21	sylancr 587	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝜑 → (𝐾 ↾_t 𝑆) ∈ (TopOn‘𝑆))
23	7, 22	eqeltrid 2842	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝜑 → 𝑇 ∈ (TopOn‘𝑆))
24		toponuni 22263	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑇 ∈ (TopOn‘𝑆) → 𝑆 = ∪ 𝑇)
25	23, 24	syl 17	. . . . . . . . . . . . . . . . . 18 ⊢ (𝜑 → 𝑆 = ∪ 𝑇)
26	19, 25	sseqtrd 3984	. . . . . . . . . . . . . . . . 17 ⊢ (𝜑 → (𝐴 ∩ 𝐵) ⊆ ∪ 𝑇)
27		eqid 2736	. . . . . . . . . . . . . . . . . 18 ⊢ ∪ 𝑇 = ∪ 𝑇
28	27	ntrss2 22408	. . . . . . . . . . . . . . . . 17 ⊢ ((𝑇 ∈ Top ∧ (𝐴 ∩ 𝐵) ⊆ ∪ 𝑇) → ((int‘𝑇)‘(𝐴 ∩ 𝐵)) ⊆ (𝐴 ∩ 𝐵))
29	16, 26, 28	syl2anc 584	. . . . . . . . . . . . . . . 16 ⊢ (𝜑 → ((int‘𝑇)‘(𝐴 ∩ 𝐵)) ⊆ (𝐴 ∩ 𝐵))
30	29, 2	sstrdi 3956	. . . . . . . . . . . . . . 15 ⊢ (𝜑 → ((int‘𝑇)‘(𝐴 ∩ 𝐵)) ⊆ 𝐵)
31	30	sselda 3944	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) → 𝑥 ∈ 𝐵)
32	31	fvresd 6862	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) → ((𝐹 ↾ 𝐵)‘𝑥) = (𝐹‘𝑥))
33	32	adantr 481	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) ∧ 𝑧 ∈ ((𝐴 ∩ 𝐵) ∖ {𝑥})) → ((𝐹 ↾ 𝐵)‘𝑥) = (𝐹‘𝑥))
34	6, 33	oveq12d 7375	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) ∧ 𝑧 ∈ ((𝐴 ∩ 𝐵) ∖ {𝑥})) → (((𝐹 ↾ 𝐵)‘𝑧) − ((𝐹 ↾ 𝐵)‘𝑥)) = ((𝐹‘𝑧) − (𝐹‘𝑥)))
35	34	oveq1d 7372	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) ∧ 𝑧 ∈ ((𝐴 ∩ 𝐵) ∖ {𝑥})) → ((((𝐹 ↾ 𝐵)‘𝑧) − ((𝐹 ↾ 𝐵)‘𝑥)) / (𝑧 − 𝑥)) = (((𝐹‘𝑧) − (𝐹‘𝑥)) / (𝑧 − 𝑥)))
36	35	mpteq2dva 5205	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) → (𝑧 ∈ ((𝐴 ∩ 𝐵) ∖ {𝑥}) ↦ ((((𝐹 ↾ 𝐵)‘𝑧) − ((𝐹 ↾ 𝐵)‘𝑥)) / (𝑧 − 𝑥))) = (𝑧 ∈ ((𝐴 ∩ 𝐵) ∖ {𝑥}) ↦ (((𝐹‘𝑧) − (𝐹‘𝑥)) / (𝑧 − 𝑥))))
37		dvres.g	. . . . . . . . . . 11 ⊢ 𝐺 = (𝑧 ∈ (𝐴 ∖ {𝑥}) ↦ (((𝐹‘𝑧) − (𝐹‘𝑥)) / (𝑧 − 𝑥)))
38	37	reseq1i 5933	. . . . . . . . . 10 ⊢ (𝐺 ↾ ((𝐴 ∩ 𝐵) ∖ {𝑥})) = ((𝑧 ∈ (𝐴 ∖ {𝑥}) ↦ (((𝐹‘𝑧) − (𝐹‘𝑥)) / (𝑧 − 𝑥))) ↾ ((𝐴 ∩ 𝐵) ∖ {𝑥}))
39		ssdif 4099	. . . . . . . . . . 11 ⊢ ((𝐴 ∩ 𝐵) ⊆ 𝐴 → ((𝐴 ∩ 𝐵) ∖ {𝑥}) ⊆ (𝐴 ∖ {𝑥}))
40		resmpt 5991	. . . . . . . . . . 11 ⊢ (((𝐴 ∩ 𝐵) ∖ {𝑥}) ⊆ (𝐴 ∖ {𝑥}) → ((𝑧 ∈ (𝐴 ∖ {𝑥}) ↦ (((𝐹‘𝑧) − (𝐹‘𝑥)) / (𝑧 − 𝑥))) ↾ ((𝐴 ∩ 𝐵) ∖ {𝑥})) = (𝑧 ∈ ((𝐴 ∩ 𝐵) ∖ {𝑥}) ↦ (((𝐹‘𝑧) − (𝐹‘𝑥)) / (𝑧 − 𝑥))))
41	17, 39, 40	mp2b 10	. . . . . . . . . 10 ⊢ ((𝑧 ∈ (𝐴 ∖ {𝑥}) ↦ (((𝐹‘𝑧) − (𝐹‘𝑥)) / (𝑧 − 𝑥))) ↾ ((𝐴 ∩ 𝐵) ∖ {𝑥})) = (𝑧 ∈ ((𝐴 ∩ 𝐵) ∖ {𝑥}) ↦ (((𝐹‘𝑧) − (𝐹‘𝑥)) / (𝑧 − 𝑥)))
42	38, 41	eqtri 2764	. . . . . . . . 9 ⊢ (𝐺 ↾ ((𝐴 ∩ 𝐵) ∖ {𝑥})) = (𝑧 ∈ ((𝐴 ∩ 𝐵) ∖ {𝑥}) ↦ (((𝐹‘𝑧) − (𝐹‘𝑥)) / (𝑧 − 𝑥)))
43	36, 42	eqtr4di 2794	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) → (𝑧 ∈ ((𝐴 ∩ 𝐵) ∖ {𝑥}) ↦ ((((𝐹 ↾ 𝐵)‘𝑧) − ((𝐹 ↾ 𝐵)‘𝑥)) / (𝑧 − 𝑥))) = (𝐺 ↾ ((𝐴 ∩ 𝐵) ∖ {𝑥})))
44	43	oveq1d 7372	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) → ((𝑧 ∈ ((𝐴 ∩ 𝐵) ∖ {𝑥}) ↦ ((((𝐹 ↾ 𝐵)‘𝑧) − ((𝐹 ↾ 𝐵)‘𝑥)) / (𝑧 − 𝑥))) lim_ℂ 𝑥) = ((𝐺 ↾ ((𝐴 ∩ 𝐵) ∖ {𝑥})) lim_ℂ 𝑥))
45		dvres.f	. . . . . . . . . . 11 ⊢ (𝜑 → 𝐹:𝐴⟶ℂ)
46	45	adantr 481	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) → 𝐹:𝐴⟶ℂ)
47	18, 10	sstrd 3954	. . . . . . . . . . 11 ⊢ (𝜑 → 𝐴 ⊆ ℂ)
48	47	adantr 481	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) → 𝐴 ⊆ ℂ)
49	29, 17	sstrdi 3956	. . . . . . . . . . 11 ⊢ (𝜑 → ((int‘𝑇)‘(𝐴 ∩ 𝐵)) ⊆ 𝐴)
50	49	sselda 3944	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) → 𝑥 ∈ 𝐴)
51	46, 48, 50	dvlem 25260	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) ∧ 𝑧 ∈ (𝐴 ∖ {𝑥})) → (((𝐹‘𝑧) − (𝐹‘𝑥)) / (𝑧 − 𝑥)) ∈ ℂ)
52	51, 37	fmptd 7062	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) → 𝐺:(𝐴 ∖ {𝑥})⟶ℂ)
53	17, 39	mp1i 13	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) → ((𝐴 ∩ 𝐵) ∖ {𝑥}) ⊆ (𝐴 ∖ {𝑥}))
54		difss 4091	. . . . . . . . 9 ⊢ (𝐴 ∖ {𝑥}) ⊆ 𝐴
55	54, 48	sstrid 3955	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) → (𝐴 ∖ {𝑥}) ⊆ ℂ)
56		eqid 2736	. . . . . . . 8 ⊢ (𝐾 ↾_t ((𝐴 ∖ {𝑥}) ∪ {𝑥})) = (𝐾 ↾_t ((𝐴 ∖ {𝑥}) ∪ {𝑥}))
57		difssd 4092	. . . . . . . . . . . . . 14 ⊢ (𝜑 → (∪ 𝑇 ∖ 𝐴) ⊆ ∪ 𝑇)
58	26, 57	unssd 4146	. . . . . . . . . . . . 13 ⊢ (𝜑 → ((𝐴 ∩ 𝐵) ∪ (∪ 𝑇 ∖ 𝐴)) ⊆ ∪ 𝑇)
59		ssun1 4132	. . . . . . . . . . . . . 14 ⊢ (𝐴 ∩ 𝐵) ⊆ ((𝐴 ∩ 𝐵) ∪ (∪ 𝑇 ∖ 𝐴))
60	59	a1i 11	. . . . . . . . . . . . 13 ⊢ (𝜑 → (𝐴 ∩ 𝐵) ⊆ ((𝐴 ∩ 𝐵) ∪ (∪ 𝑇 ∖ 𝐴)))
61	27	ntrss 22406	. . . . . . . . . . . . 13 ⊢ ((𝑇 ∈ Top ∧ ((𝐴 ∩ 𝐵) ∪ (∪ 𝑇 ∖ 𝐴)) ⊆ ∪ 𝑇 ∧ (𝐴 ∩ 𝐵) ⊆ ((𝐴 ∩ 𝐵) ∪ (∪ 𝑇 ∖ 𝐴))) → ((int‘𝑇)‘(𝐴 ∩ 𝐵)) ⊆ ((int‘𝑇)‘((𝐴 ∩ 𝐵) ∪ (∪ 𝑇 ∖ 𝐴))))
62	16, 58, 60, 61	syl3anc 1371	. . . . . . . . . . . 12 ⊢ (𝜑 → ((int‘𝑇)‘(𝐴 ∩ 𝐵)) ⊆ ((int‘𝑇)‘((𝐴 ∩ 𝐵) ∪ (∪ 𝑇 ∖ 𝐴))))
63	62, 49	ssind 4192	. . . . . . . . . . 11 ⊢ (𝜑 → ((int‘𝑇)‘(𝐴 ∩ 𝐵)) ⊆ (((int‘𝑇)‘((𝐴 ∩ 𝐵) ∪ (∪ 𝑇 ∖ 𝐴))) ∩ 𝐴))
64	18, 25	sseqtrd 3984	. . . . . . . . . . . . 13 ⊢ (𝜑 → 𝐴 ⊆ ∪ 𝑇)
65	17	a1i 11	. . . . . . . . . . . . 13 ⊢ (𝜑 → (𝐴 ∩ 𝐵) ⊆ 𝐴)
66		eqid 2736	. . . . . . . . . . . . . 14 ⊢ (𝑇 ↾_t 𝐴) = (𝑇 ↾_t 𝐴)
67	27, 66	restntr 22533	. . . . . . . . . . . . 13 ⊢ ((𝑇 ∈ Top ∧ 𝐴 ⊆ ∪ 𝑇 ∧ (𝐴 ∩ 𝐵) ⊆ 𝐴) → ((int‘(𝑇 ↾_t 𝐴))‘(𝐴 ∩ 𝐵)) = (((int‘𝑇)‘((𝐴 ∩ 𝐵) ∪ (∪ 𝑇 ∖ 𝐴))) ∩ 𝐴))
68	16, 64, 65, 67	syl3anc 1371	. . . . . . . . . . . 12 ⊢ (𝜑 → ((int‘(𝑇 ↾_t 𝐴))‘(𝐴 ∩ 𝐵)) = (((int‘𝑇)‘((𝐴 ∩ 𝐵) ∪ (∪ 𝑇 ∖ 𝐴))) ∩ 𝐴))
69	7	oveq1i 7367	. . . . . . . . . . . . . . 15 ⊢ (𝑇 ↾_t 𝐴) = ((𝐾 ↾_t 𝑆) ↾_t 𝐴)
70	9	a1i 11	. . . . . . . . . . . . . . . 16 ⊢ (𝜑 → 𝐾 ∈ Top)
71		restabs 22516	. . . . . . . . . . . . . . . 16 ⊢ ((𝐾 ∈ Top ∧ 𝐴 ⊆ 𝑆 ∧ 𝑆 ∈ V) → ((𝐾 ↾_t 𝑆) ↾_t 𝐴) = (𝐾 ↾_t 𝐴))
72	70, 18, 13, 71	syl3anc 1371	. . . . . . . . . . . . . . 15 ⊢ (𝜑 → ((𝐾 ↾_t 𝑆) ↾_t 𝐴) = (𝐾 ↾_t 𝐴))
73	69, 72	eqtrid 2788	. . . . . . . . . . . . . 14 ⊢ (𝜑 → (𝑇 ↾_t 𝐴) = (𝐾 ↾_t 𝐴))
74	73	fveq2d 6846	. . . . . . . . . . . . 13 ⊢ (𝜑 → (int‘(𝑇 ↾_t 𝐴)) = (int‘(𝐾 ↾_t 𝐴)))
75	74	fveq1d 6844	. . . . . . . . . . . 12 ⊢ (𝜑 → ((int‘(𝑇 ↾_t 𝐴))‘(𝐴 ∩ 𝐵)) = ((int‘(𝐾 ↾_t 𝐴))‘(𝐴 ∩ 𝐵)))
76	68, 75	eqtr3d 2778	. . . . . . . . . . 11 ⊢ (𝜑 → (((int‘𝑇)‘((𝐴 ∩ 𝐵) ∪ (∪ 𝑇 ∖ 𝐴))) ∩ 𝐴) = ((int‘(𝐾 ↾_t 𝐴))‘(𝐴 ∩ 𝐵)))
77	63, 76	sseqtrd 3984	. . . . . . . . . 10 ⊢ (𝜑 → ((int‘𝑇)‘(𝐴 ∩ 𝐵)) ⊆ ((int‘(𝐾 ↾_t 𝐴))‘(𝐴 ∩ 𝐵)))
78	77	sselda 3944	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) → 𝑥 ∈ ((int‘(𝐾 ↾_t 𝐴))‘(𝐴 ∩ 𝐵)))
79		undif1 4435	. . . . . . . . . . . . 13 ⊢ ((𝐴 ∖ {𝑥}) ∪ {𝑥}) = (𝐴 ∪ {𝑥})
80	29	sselda 3944	. . . . . . . . . . . . . . . 16 ⊢ ((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) → 𝑥 ∈ (𝐴 ∩ 𝐵))
81	80	snssd 4769	. . . . . . . . . . . . . . 15 ⊢ ((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) → {𝑥} ⊆ (𝐴 ∩ 𝐵))
82	81, 17	sstrdi 3956	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) → {𝑥} ⊆ 𝐴)
83		ssequn2 4143	. . . . . . . . . . . . . 14 ⊢ ({𝑥} ⊆ 𝐴 ↔ (𝐴 ∪ {𝑥}) = 𝐴)
84	82, 83	sylib 217	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) → (𝐴 ∪ {𝑥}) = 𝐴)
85	79, 84	eqtrid 2788	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) → ((𝐴 ∖ {𝑥}) ∪ {𝑥}) = 𝐴)
86	85	oveq2d 7373	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) → (𝐾 ↾_t ((𝐴 ∖ {𝑥}) ∪ {𝑥})) = (𝐾 ↾_t 𝐴))
87	86	fveq2d 6846	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) → (int‘(𝐾 ↾_t ((𝐴 ∖ {𝑥}) ∪ {𝑥}))) = (int‘(𝐾 ↾_t 𝐴)))
88		undif1 4435	. . . . . . . . . . 11 ⊢ (((𝐴 ∩ 𝐵) ∖ {𝑥}) ∪ {𝑥}) = ((𝐴 ∩ 𝐵) ∪ {𝑥})
89		ssequn2 4143	. . . . . . . . . . . 12 ⊢ ({𝑥} ⊆ (𝐴 ∩ 𝐵) ↔ ((𝐴 ∩ 𝐵) ∪ {𝑥}) = (𝐴 ∩ 𝐵))
90	81, 89	sylib 217	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) → ((𝐴 ∩ 𝐵) ∪ {𝑥}) = (𝐴 ∩ 𝐵))
91	88, 90	eqtrid 2788	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) → (((𝐴 ∩ 𝐵) ∖ {𝑥}) ∪ {𝑥}) = (𝐴 ∩ 𝐵))
92	87, 91	fveq12d 6849	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) → ((int‘(𝐾 ↾_t ((𝐴 ∖ {𝑥}) ∪ {𝑥})))‘(((𝐴 ∩ 𝐵) ∖ {𝑥}) ∪ {𝑥})) = ((int‘(𝐾 ↾_t 𝐴))‘(𝐴 ∩ 𝐵)))
93	78, 92	eleqtrrd 2841	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) → 𝑥 ∈ ((int‘(𝐾 ↾_t ((𝐴 ∖ {𝑥}) ∪ {𝑥})))‘(((𝐴 ∩ 𝐵) ∖ {𝑥}) ∪ {𝑥})))
94	52, 53, 55, 8, 56, 93	limcres 25250	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) → ((𝐺 ↾ ((𝐴 ∩ 𝐵) ∖ {𝑥})) lim_ℂ 𝑥) = (𝐺 lim_ℂ 𝑥))
95	44, 94	eqtrd 2776	. . . . . 6 ⊢ ((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) → ((𝑧 ∈ ((𝐴 ∩ 𝐵) ∖ {𝑥}) ↦ ((((𝐹 ↾ 𝐵)‘𝑧) − ((𝐹 ↾ 𝐵)‘𝑥)) / (𝑧 − 𝑥))) lim_ℂ 𝑥) = (𝐺 lim_ℂ 𝑥))
96	95	eleq2d 2823	. . . . 5 ⊢ ((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) → (𝑦 ∈ ((𝑧 ∈ ((𝐴 ∩ 𝐵) ∖ {𝑥}) ↦ ((((𝐹 ↾ 𝐵)‘𝑧) − ((𝐹 ↾ 𝐵)‘𝑥)) / (𝑧 − 𝑥))) lim_ℂ 𝑥) ↔ 𝑦 ∈ (𝐺 lim_ℂ 𝑥)))
97	96	pm5.32da 579	. . . 4 ⊢ (𝜑 → ((𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵)) ∧ 𝑦 ∈ ((𝑧 ∈ ((𝐴 ∩ 𝐵) ∖ {𝑥}) ↦ ((((𝐹 ↾ 𝐵)‘𝑧) − ((𝐹 ↾ 𝐵)‘𝑥)) / (𝑧 − 𝑥))) lim_ℂ 𝑥)) ↔ (𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵)) ∧ 𝑦 ∈ (𝐺 lim_ℂ 𝑥))))
98		dvres.b	. . . . . . . . 9 ⊢ (𝜑 → 𝐵 ⊆ 𝑆)
99	98, 25	sseqtrd 3984	. . . . . . . 8 ⊢ (𝜑 → 𝐵 ⊆ ∪ 𝑇)
100	27	ntrin 22412	. . . . . . . 8 ⊢ ((𝑇 ∈ Top ∧ 𝐴 ⊆ ∪ 𝑇 ∧ 𝐵 ⊆ ∪ 𝑇) → ((int‘𝑇)‘(𝐴 ∩ 𝐵)) = (((int‘𝑇)‘𝐴) ∩ ((int‘𝑇)‘𝐵)))
101	16, 64, 99, 100	syl3anc 1371	. . . . . . 7 ⊢ (𝜑 → ((int‘𝑇)‘(𝐴 ∩ 𝐵)) = (((int‘𝑇)‘𝐴) ∩ ((int‘𝑇)‘𝐵)))
102	101	eleq2d 2823	. . . . . 6 ⊢ (𝜑 → (𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵)) ↔ 𝑥 ∈ (((int‘𝑇)‘𝐴) ∩ ((int‘𝑇)‘𝐵))))
103		elin 3926	. . . . . 6 ⊢ (𝑥 ∈ (((int‘𝑇)‘𝐴) ∩ ((int‘𝑇)‘𝐵)) ↔ (𝑥 ∈ ((int‘𝑇)‘𝐴) ∧ 𝑥 ∈ ((int‘𝑇)‘𝐵)))
104	102, 103	bitrdi 286	. . . . 5 ⊢ (𝜑 → (𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵)) ↔ (𝑥 ∈ ((int‘𝑇)‘𝐴) ∧ 𝑥 ∈ ((int‘𝑇)‘𝐵))))
105	104	anbi1d 630	. . . 4 ⊢ (𝜑 → ((𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵)) ∧ 𝑦 ∈ (𝐺 lim_ℂ 𝑥)) ↔ ((𝑥 ∈ ((int‘𝑇)‘𝐴) ∧ 𝑥 ∈ ((int‘𝑇)‘𝐵)) ∧ 𝑦 ∈ (𝐺 lim_ℂ 𝑥))))
106	97, 105	bitrd 278	. . 3 ⊢ (𝜑 → ((𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵)) ∧ 𝑦 ∈ ((𝑧 ∈ ((𝐴 ∩ 𝐵) ∖ {𝑥}) ↦ ((((𝐹 ↾ 𝐵)‘𝑧) − ((𝐹 ↾ 𝐵)‘𝑥)) / (𝑧 − 𝑥))) lim_ℂ 𝑥)) ↔ ((𝑥 ∈ ((int‘𝑇)‘𝐴) ∧ 𝑥 ∈ ((int‘𝑇)‘𝐵)) ∧ 𝑦 ∈ (𝐺 lim_ℂ 𝑥))))
107		an32 644	. . 3 ⊢ (((𝑥 ∈ ((int‘𝑇)‘𝐴) ∧ 𝑥 ∈ ((int‘𝑇)‘𝐵)) ∧ 𝑦 ∈ (𝐺 lim_ℂ 𝑥)) ↔ ((𝑥 ∈ ((int‘𝑇)‘𝐴) ∧ 𝑦 ∈ (𝐺 lim_ℂ 𝑥)) ∧ 𝑥 ∈ ((int‘𝑇)‘𝐵)))
108	106, 107	bitrdi 286	. 2 ⊢ (𝜑 → ((𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵)) ∧ 𝑦 ∈ ((𝑧 ∈ ((𝐴 ∩ 𝐵) ∖ {𝑥}) ↦ ((((𝐹 ↾ 𝐵)‘𝑧) − ((𝐹 ↾ 𝐵)‘𝑥)) / (𝑧 − 𝑥))) lim_ℂ 𝑥)) ↔ ((𝑥 ∈ ((int‘𝑇)‘𝐴) ∧ 𝑦 ∈ (𝐺 lim_ℂ 𝑥)) ∧ 𝑥 ∈ ((int‘𝑇)‘𝐵))))
109		eqid 2736	. . 3 ⊢ (𝑧 ∈ ((𝐴 ∩ 𝐵) ∖ {𝑥}) ↦ ((((𝐹 ↾ 𝐵)‘𝑧) − ((𝐹 ↾ 𝐵)‘𝑥)) / (𝑧 − 𝑥))) = (𝑧 ∈ ((𝐴 ∩ 𝐵) ∖ {𝑥}) ↦ ((((𝐹 ↾ 𝐵)‘𝑧) − ((𝐹 ↾ 𝐵)‘𝑥)) / (𝑧 − 𝑥)))
110		fresin 6711	. . . 4 ⊢ (𝐹:𝐴⟶ℂ → (𝐹 ↾ 𝐵):(𝐴 ∩ 𝐵)⟶ℂ)
111	45, 110	syl 17	. . 3 ⊢ (𝜑 → (𝐹 ↾ 𝐵):(𝐴 ∩ 𝐵)⟶ℂ)
112	7, 8, 109, 10, 111, 19	eldv 25262	. 2 ⊢ (𝜑 → (𝑥(𝑆 D (𝐹 ↾ 𝐵))𝑦 ↔ (𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵)) ∧ 𝑦 ∈ ((𝑧 ∈ ((𝐴 ∩ 𝐵) ∖ {𝑥}) ↦ ((((𝐹 ↾ 𝐵)‘𝑧) − ((𝐹 ↾ 𝐵)‘𝑥)) / (𝑧 − 𝑥))) lim_ℂ 𝑥))))
113	7, 8, 37, 10, 45, 18	eldv 25262	. . 3 ⊢ (𝜑 → (𝑥(𝑆 D 𝐹)𝑦 ↔ (𝑥 ∈ ((int‘𝑇)‘𝐴) ∧ 𝑦 ∈ (𝐺 lim_ℂ 𝑥))))
114	113	anbi1cd 634	. 2 ⊢ (𝜑 → ((𝑥 ∈ ((int‘𝑇)‘𝐵) ∧ 𝑥(𝑆 D 𝐹)𝑦) ↔ ((𝑥 ∈ ((int‘𝑇)‘𝐴) ∧ 𝑦 ∈ (𝐺 lim_ℂ 𝑥)) ∧ 𝑥 ∈ ((int‘𝑇)‘𝐵))))
115	108, 112, 114	3bitr4d 310	1 ⊢ (𝜑 → (𝑥(𝑆 D (𝐹 ↾ 𝐵))𝑦 ↔ (𝑥 ∈ ((int‘𝑇)‘𝐵) ∧ 𝑥(𝑆 D 𝐹)𝑦)))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 205 ∧ wa 396 = wceq 1541 ∈ wcel 2106 Vcvv 3445 ∖ cdif 3907 ∪ cun 3908 ∩ cin 3909 ⊆ wss 3910 {csn 4586 ∪ cuni 4865 class class class wbr 5105 ↦ cmpt 5188 ↾ cres 5635 ⟶wf 6492 ‘cfv 6496 (class class class)co 7357 ℂcc 11049 − cmin 11385 / cdiv 11812 ↾_t crest 17302 TopOpenctopn 17303 ℂ_fldccnfld 20796 Topctop 22242 TopOnctopon 22259 intcnt 22368 lim_ℂ climc 25226 D cdv 25227

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 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2707 ax-rep 5242 ax-sep 5256 ax-nul 5263 ax-pow 5320 ax-pr 5384 ax-un 7672 ax-cnex 11107 ax-resscn 11108 ax-1cn 11109 ax-icn 11110 ax-addcl 11111 ax-addrcl 11112 ax-mulcl 11113 ax-mulrcl 11114 ax-mulcom 11115 ax-addass 11116 ax-mulass 11117 ax-distr 11118 ax-i2m1 11119 ax-1ne0 11120 ax-1rid 11121 ax-rnegex 11122 ax-rrecex 11123 ax-cnre 11124 ax-pre-lttri 11125 ax-pre-lttrn 11126 ax-pre-ltadd 11127 ax-pre-mulgt0 11128 ax-pre-sup 11129

This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3or 1088 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-mo 2538 df-eu 2567 df-clab 2714 df-cleq 2728 df-clel 2814 df-nfc 2889 df-ne 2944 df-nel 3050 df-ral 3065 df-rex 3074 df-rmo 3353 df-reu 3354 df-rab 3408 df-v 3447 df-sbc 3740 df-csb 3856 df-dif 3913 df-un 3915 df-in 3917 df-ss 3927 df-pss 3929 df-nul 4283 df-if 4487 df-pw 4562 df-sn 4587 df-pr 4589 df-tp 4591 df-op 4593 df-uni 4866 df-int 4908 df-iun 4956 df-iin 4957 df-br 5106 df-opab 5168 df-mpt 5189 df-tr 5223 df-id 5531 df-eprel 5537 df-po 5545 df-so 5546 df-fr 5588 df-we 5590 df-xp 5639 df-rel 5640 df-cnv 5641 df-co 5642 df-dm 5643 df-rn 5644 df-res 5645 df-ima 5646 df-pred 6253 df-ord 6320 df-on 6321 df-lim 6322 df-suc 6323 df-iota 6448 df-fun 6498 df-fn 6499 df-f 6500 df-f1 6501 df-fo 6502 df-f1o 6503 df-fv 6504 df-riota 7313 df-ov 7360 df-oprab 7361 df-mpo 7362 df-om 7803 df-1st 7921 df-2nd 7922 df-frecs 8212 df-wrecs 8243 df-recs 8317 df-rdg 8356 df-1o 8412 df-er 8648 df-map 8767 df-pm 8768 df-en 8884 df-dom 8885 df-sdom 8886 df-fin 8887 df-fi 9347 df-sup 9378 df-inf 9379 df-pnf 11191 df-mnf 11192 df-xr 11193 df-ltxr 11194 df-le 11195 df-sub 11387 df-neg 11388 df-div 11813 df-nn 12154 df-2 12216 df-3 12217 df-4 12218 df-5 12219 df-6 12220 df-7 12221 df-8 12222 df-9 12223 df-n0 12414 df-z 12500 df-dec 12619 df-uz 12764 df-q 12874 df-rp 12916 df-xneg 13033 df-xadd 13034 df-xmul 13035 df-fz 13425 df-seq 13907 df-exp 13968 df-cj 14984 df-re 14985 df-im 14986 df-sqrt 15120 df-abs 15121 df-struct 17019 df-slot 17054 df-ndx 17066 df-base 17084 df-plusg 17146 df-mulr 17147 df-starv 17148 df-tset 17152 df-ple 17153 df-ds 17155 df-unif 17156 df-rest 17304 df-topn 17305 df-topgen 17325 df-psmet 20788 df-xmet 20789 df-met 20790 df-bl 20791 df-mopn 20792 df-cnfld 20797 df-top 22243 df-topon 22260 df-topsp 22282 df-bases 22296 df-cld 22370 df-ntr 22371 df-cls 22372 df-cnp 22579 df-xms 23673 df-ms 23674 df-limc 25230 df-dv 25231

This theorem is referenced by: dvres 25275

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