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Theorem dvreslem 25812

Description: Lemma for dvres 25814. (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 4127	. . . . . . . . . . . . . . 15 ⊢ ((𝐴 ∩ 𝐵) ∖ {𝑥}) ⊆ (𝐴 ∩ 𝐵)
2		inss2 4225	. . . . . . . . . . . . . . 15 ⊢ (𝐴 ∩ 𝐵) ⊆ 𝐵
3	1, 2	sstri 3987	. . . . . . . . . . . . . 14 ⊢ ((𝐴 ∩ 𝐵) ∖ {𝑥}) ⊆ 𝐵
4		simpr 484	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) ∧ 𝑧 ∈ ((𝐴 ∩ 𝐵) ∖ {𝑥})) → 𝑧 ∈ ((𝐴 ∩ 𝐵) ∖ {𝑥}))
5	3, 4	sselid 3976	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) ∧ 𝑧 ∈ ((𝐴 ∩ 𝐵) ∖ {𝑥})) → 𝑧 ∈ 𝐵)
6	5	fvresd 6911	. . . . . . . . . . . 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 24674	. . . . . . . . . . . . . . . . . . 19 ⊢ 𝐾 ∈ Top
10		dvres.s	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝜑 → 𝑆 ⊆ ℂ)
11		cnex 11205	. . . . . . . . . . . . . . . . . . . 20 ⊢ ℂ ∈ V
12		ssexg 5317	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((𝑆 ⊆ ℂ ∧ ℂ ∈ V) → 𝑆 ∈ V)
13	10, 11, 12	sylancl 585	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝜑 → 𝑆 ∈ V)
14		resttop 23038	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝐾 ∈ Top ∧ 𝑆 ∈ V) → (𝐾 ↾_t 𝑆) ∈ Top)
15	9, 13, 14	sylancr 586	. . . . . . . . . . . . . . . . . 18 ⊢ (𝜑 → (𝐾 ↾_t 𝑆) ∈ Top)
16	7, 15	eqeltrid 2832	. . . . . . . . . . . . . . . . 17 ⊢ (𝜑 → 𝑇 ∈ Top)
17		inss1 4224	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝐴 ∩ 𝐵) ⊆ 𝐴
18		dvres.a	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝜑 → 𝐴 ⊆ 𝑆)
19	17, 18	sstrid 3989	. . . . . . . . . . . . . . . . . 18 ⊢ (𝜑 → (𝐴 ∩ 𝐵) ⊆ 𝑆)
20	8	cnfldtopon 24673	. . . . . . . . . . . . . . . . . . . . 21 ⊢ 𝐾 ∈ (TopOn‘ℂ)
21		resttopon 23039	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((𝐾 ∈ (TopOn‘ℂ) ∧ 𝑆 ⊆ ℂ) → (𝐾 ↾_t 𝑆) ∈ (TopOn‘𝑆))
22	20, 10, 21	sylancr 586	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝜑 → (𝐾 ↾_t 𝑆) ∈ (TopOn‘𝑆))
23	7, 22	eqeltrid 2832	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝜑 → 𝑇 ∈ (TopOn‘𝑆))
24		toponuni 22790	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑇 ∈ (TopOn‘𝑆) → 𝑆 = ∪ 𝑇)
25	23, 24	syl 17	. . . . . . . . . . . . . . . . . 18 ⊢ (𝜑 → 𝑆 = ∪ 𝑇)
26	19, 25	sseqtrd 4018	. . . . . . . . . . . . . . . . 17 ⊢ (𝜑 → (𝐴 ∩ 𝐵) ⊆ ∪ 𝑇)
27		eqid 2727	. . . . . . . . . . . . . . . . . 18 ⊢ ∪ 𝑇 = ∪ 𝑇
28	27	ntrss2 22935	. . . . . . . . . . . . . . . . 17 ⊢ ((𝑇 ∈ Top ∧ (𝐴 ∩ 𝐵) ⊆ ∪ 𝑇) → ((int‘𝑇)‘(𝐴 ∩ 𝐵)) ⊆ (𝐴 ∩ 𝐵))
29	16, 26, 28	syl2anc 583	. . . . . . . . . . . . . . . 16 ⊢ (𝜑 → ((int‘𝑇)‘(𝐴 ∩ 𝐵)) ⊆ (𝐴 ∩ 𝐵))
30	29, 2	sstrdi 3990	. . . . . . . . . . . . . . 15 ⊢ (𝜑 → ((int‘𝑇)‘(𝐴 ∩ 𝐵)) ⊆ 𝐵)
31	30	sselda 3978	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) → 𝑥 ∈ 𝐵)
32	31	fvresd 6911	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) → ((𝐹 ↾ 𝐵)‘𝑥) = (𝐹‘𝑥))
33	32	adantr 480	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) ∧ 𝑧 ∈ ((𝐴 ∩ 𝐵) ∖ {𝑥})) → ((𝐹 ↾ 𝐵)‘𝑥) = (𝐹‘𝑥))
34	6, 33	oveq12d 7432	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) ∧ 𝑧 ∈ ((𝐴 ∩ 𝐵) ∖ {𝑥})) → (((𝐹 ↾ 𝐵)‘𝑧) − ((𝐹 ↾ 𝐵)‘𝑥)) = ((𝐹‘𝑧) − (𝐹‘𝑥)))
35	34	oveq1d 7429	. . . . . . . . . 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 5242	. . . . . . . . 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 5975	. . . . . . . . . 10 ⊢ (𝐺 ↾ ((𝐴 ∩ 𝐵) ∖ {𝑥})) = ((𝑧 ∈ (𝐴 ∖ {𝑥}) ↦ (((𝐹‘𝑧) − (𝐹‘𝑥)) / (𝑧 − 𝑥))) ↾ ((𝐴 ∩ 𝐵) ∖ {𝑥}))
39		ssdif 4135	. . . . . . . . . . 11 ⊢ ((𝐴 ∩ 𝐵) ⊆ 𝐴 → ((𝐴 ∩ 𝐵) ∖ {𝑥}) ⊆ (𝐴 ∖ {𝑥}))
40		resmpt 6035	. . . . . . . . . . 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 2755	. . . . . . . . 9 ⊢ (𝐺 ↾ ((𝐴 ∩ 𝐵) ∖ {𝑥})) = (𝑧 ∈ ((𝐴 ∩ 𝐵) ∖ {𝑥}) ↦ (((𝐹‘𝑧) − (𝐹‘𝑥)) / (𝑧 − 𝑥)))
43	36, 42	eqtr4di 2785	. . . . . . . 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 7429	. . . . . . 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 480	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) → 𝐹:𝐴⟶ℂ)
47	18, 10	sstrd 3988	. . . . . . . . . . 11 ⊢ (𝜑 → 𝐴 ⊆ ℂ)
48	47	adantr 480	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) → 𝐴 ⊆ ℂ)
49	29, 17	sstrdi 3990	. . . . . . . . . . 11 ⊢ (𝜑 → ((int‘𝑇)‘(𝐴 ∩ 𝐵)) ⊆ 𝐴)
50	49	sselda 3978	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) → 𝑥 ∈ 𝐴)
51	46, 48, 50	dvlem 25799	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) ∧ 𝑧 ∈ (𝐴 ∖ {𝑥})) → (((𝐹‘𝑧) − (𝐹‘𝑥)) / (𝑧 − 𝑥)) ∈ ℂ)
52	51, 37	fmptd 7118	. . . . . . . 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 4127	. . . . . . . . 9 ⊢ (𝐴 ∖ {𝑥}) ⊆ 𝐴
55	54, 48	sstrid 3989	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) → (𝐴 ∖ {𝑥}) ⊆ ℂ)
56		eqid 2727	. . . . . . . 8 ⊢ (𝐾 ↾_t ((𝐴 ∖ {𝑥}) ∪ {𝑥})) = (𝐾 ↾_t ((𝐴 ∖ {𝑥}) ∪ {𝑥}))
57		difssd 4128	. . . . . . . . . . . . . 14 ⊢ (𝜑 → (∪ 𝑇 ∖ 𝐴) ⊆ ∪ 𝑇)
58	26, 57	unssd 4182	. . . . . . . . . . . . 13 ⊢ (𝜑 → ((𝐴 ∩ 𝐵) ∪ (∪ 𝑇 ∖ 𝐴)) ⊆ ∪ 𝑇)
59		ssun1 4168	. . . . . . . . . . . . . 14 ⊢ (𝐴 ∩ 𝐵) ⊆ ((𝐴 ∩ 𝐵) ∪ (∪ 𝑇 ∖ 𝐴))
60	59	a1i 11	. . . . . . . . . . . . 13 ⊢ (𝜑 → (𝐴 ∩ 𝐵) ⊆ ((𝐴 ∩ 𝐵) ∪ (∪ 𝑇 ∖ 𝐴)))
61	27	ntrss 22933	. . . . . . . . . . . . 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 1369	. . . . . . . . . . . 12 ⊢ (𝜑 → ((int‘𝑇)‘(𝐴 ∩ 𝐵)) ⊆ ((int‘𝑇)‘((𝐴 ∩ 𝐵) ∪ (∪ 𝑇 ∖ 𝐴))))
63	62, 49	ssind 4228	. . . . . . . . . . 11 ⊢ (𝜑 → ((int‘𝑇)‘(𝐴 ∩ 𝐵)) ⊆ (((int‘𝑇)‘((𝐴 ∩ 𝐵) ∪ (∪ 𝑇 ∖ 𝐴))) ∩ 𝐴))
64	18, 25	sseqtrd 4018	. . . . . . . . . . . . 13 ⊢ (𝜑 → 𝐴 ⊆ ∪ 𝑇)
65	17	a1i 11	. . . . . . . . . . . . 13 ⊢ (𝜑 → (𝐴 ∩ 𝐵) ⊆ 𝐴)
66		eqid 2727	. . . . . . . . . . . . . 14 ⊢ (𝑇 ↾_t 𝐴) = (𝑇 ↾_t 𝐴)
67	27, 66	restntr 23060	. . . . . . . . . . . . 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 1369	. . . . . . . . . . . 12 ⊢ (𝜑 → ((int‘(𝑇 ↾_t 𝐴))‘(𝐴 ∩ 𝐵)) = (((int‘𝑇)‘((𝐴 ∩ 𝐵) ∪ (∪ 𝑇 ∖ 𝐴))) ∩ 𝐴))
69	7	oveq1i 7424	. . . . . . . . . . . . . . 15 ⊢ (𝑇 ↾_t 𝐴) = ((𝐾 ↾_t 𝑆) ↾_t 𝐴)
70	9	a1i 11	. . . . . . . . . . . . . . . 16 ⊢ (𝜑 → 𝐾 ∈ Top)
71		restabs 23043	. . . . . . . . . . . . . . . 16 ⊢ ((𝐾 ∈ Top ∧ 𝐴 ⊆ 𝑆 ∧ 𝑆 ∈ V) → ((𝐾 ↾_t 𝑆) ↾_t 𝐴) = (𝐾 ↾_t 𝐴))
72	70, 18, 13, 71	syl3anc 1369	. . . . . . . . . . . . . . 15 ⊢ (𝜑 → ((𝐾 ↾_t 𝑆) ↾_t 𝐴) = (𝐾 ↾_t 𝐴))
73	69, 72	eqtrid 2779	. . . . . . . . . . . . . 14 ⊢ (𝜑 → (𝑇 ↾_t 𝐴) = (𝐾 ↾_t 𝐴))
74	73	fveq2d 6895	. . . . . . . . . . . . 13 ⊢ (𝜑 → (int‘(𝑇 ↾_t 𝐴)) = (int‘(𝐾 ↾_t 𝐴)))
75	74	fveq1d 6893	. . . . . . . . . . . 12 ⊢ (𝜑 → ((int‘(𝑇 ↾_t 𝐴))‘(𝐴 ∩ 𝐵)) = ((int‘(𝐾 ↾_t 𝐴))‘(𝐴 ∩ 𝐵)))
76	68, 75	eqtr3d 2769	. . . . . . . . . . 11 ⊢ (𝜑 → (((int‘𝑇)‘((𝐴 ∩ 𝐵) ∪ (∪ 𝑇 ∖ 𝐴))) ∩ 𝐴) = ((int‘(𝐾 ↾_t 𝐴))‘(𝐴 ∩ 𝐵)))
77	63, 76	sseqtrd 4018	. . . . . . . . . 10 ⊢ (𝜑 → ((int‘𝑇)‘(𝐴 ∩ 𝐵)) ⊆ ((int‘(𝐾 ↾_t 𝐴))‘(𝐴 ∩ 𝐵)))
78	77	sselda 3978	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) → 𝑥 ∈ ((int‘(𝐾 ↾_t 𝐴))‘(𝐴 ∩ 𝐵)))
79		undif1 4471	. . . . . . . . . . . . 13 ⊢ ((𝐴 ∖ {𝑥}) ∪ {𝑥}) = (𝐴 ∪ {𝑥})
80	29	sselda 3978	. . . . . . . . . . . . . . . 16 ⊢ ((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) → 𝑥 ∈ (𝐴 ∩ 𝐵))
81	80	snssd 4808	. . . . . . . . . . . . . . 15 ⊢ ((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) → {𝑥} ⊆ (𝐴 ∩ 𝐵))
82	81, 17	sstrdi 3990	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) → {𝑥} ⊆ 𝐴)
83		ssequn2 4179	. . . . . . . . . . . . . 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 2779	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) → ((𝐴 ∖ {𝑥}) ∪ {𝑥}) = 𝐴)
86	85	oveq2d 7430	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) → (𝐾 ↾_t ((𝐴 ∖ {𝑥}) ∪ {𝑥})) = (𝐾 ↾_t 𝐴))
87	86	fveq2d 6895	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) → (int‘(𝐾 ↾_t ((𝐴 ∖ {𝑥}) ∪ {𝑥}))) = (int‘(𝐾 ↾_t 𝐴)))
88		undif1 4471	. . . . . . . . . . 11 ⊢ (((𝐴 ∩ 𝐵) ∖ {𝑥}) ∪ {𝑥}) = ((𝐴 ∩ 𝐵) ∪ {𝑥})
89		ssequn2 4179	. . . . . . . . . . . 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 2779	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) → (((𝐴 ∩ 𝐵) ∖ {𝑥}) ∪ {𝑥}) = (𝐴 ∩ 𝐵))
92	87, 91	fveq12d 6898	. . . . . . . . 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 2831	. . . . . . . 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 25789	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵))) → ((𝐺 ↾ ((𝐴 ∩ 𝐵) ∖ {𝑥})) lim_ℂ 𝑥) = (𝐺 lim_ℂ 𝑥))
95	44, 94	eqtrd 2767	. . . . . 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 2814	. . . . 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 578	. . . 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 4018	. . . . . . . 8 ⊢ (𝜑 → 𝐵 ⊆ ∪ 𝑇)
100	27	ntrin 22939	. . . . . . . 8 ⊢ ((𝑇 ∈ Top ∧ 𝐴 ⊆ ∪ 𝑇 ∧ 𝐵 ⊆ ∪ 𝑇) → ((int‘𝑇)‘(𝐴 ∩ 𝐵)) = (((int‘𝑇)‘𝐴) ∩ ((int‘𝑇)‘𝐵)))
101	16, 64, 99, 100	syl3anc 1369	. . . . . . 7 ⊢ (𝜑 → ((int‘𝑇)‘(𝐴 ∩ 𝐵)) = (((int‘𝑇)‘𝐴) ∩ ((int‘𝑇)‘𝐵)))
102	101	eleq2d 2814	. . . . . 6 ⊢ (𝜑 → (𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵)) ↔ 𝑥 ∈ (((int‘𝑇)‘𝐴) ∩ ((int‘𝑇)‘𝐵))))
103		elin 3960	. . . . . 6 ⊢ (𝑥 ∈ (((int‘𝑇)‘𝐴) ∩ ((int‘𝑇)‘𝐵)) ↔ (𝑥 ∈ ((int‘𝑇)‘𝐴) ∧ 𝑥 ∈ ((int‘𝑇)‘𝐵)))
104	102, 103	bitrdi 287	. . . . 5 ⊢ (𝜑 → (𝑥 ∈ ((int‘𝑇)‘(𝐴 ∩ 𝐵)) ↔ (𝑥 ∈ ((int‘𝑇)‘𝐴) ∧ 𝑥 ∈ ((int‘𝑇)‘𝐵))))
105	104	anbi1d 629	. . . 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 279	. . 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 645	. . 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 287	. 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 2727	. . 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 6760	. . . 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 25801	. 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 25801	. . 3 ⊢ (𝜑 → (𝑥(𝑆 D 𝐹)𝑦 ↔ (𝑥 ∈ ((int‘𝑇)‘𝐴) ∧ 𝑦 ∈ (𝐺 lim_ℂ 𝑥))))
114	113	anbi1cd 633	. 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 311	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 395 = wceq 1534 ∈ wcel 2099 Vcvv 3469 ∖ cdif 3941 ∪ cun 3942 ∩ cin 3943 ⊆ wss 3944 {csn 4624 ∪ cuni 4903 class class class wbr 5142 ↦ cmpt 5225 ↾ cres 5674 ⟶wf 6538 ‘cfv 6542 (class class class)co 7414 ℂcc 11122 − cmin 11460 / cdiv 11887 ↾_t crest 17387 TopOpenctopn 17388 ℂ_fldccnfld 21259 Topctop 22769 TopOnctopon 22786 intcnt 22895 lim_ℂ climc 25765 D cdv 25766

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1790 ax-4 1804 ax-5 1906 ax-6 1964 ax-7 2004 ax-8 2101 ax-9 2109 ax-10 2130 ax-11 2147 ax-12 2164 ax-ext 2698 ax-rep 5279 ax-sep 5293 ax-nul 5300 ax-pow 5359 ax-pr 5423 ax-un 7732 ax-cnex 11180 ax-resscn 11181 ax-1cn 11182 ax-icn 11183 ax-addcl 11184 ax-addrcl 11185 ax-mulcl 11186 ax-mulrcl 11187 ax-mulcom 11188 ax-addass 11189 ax-mulass 11190 ax-distr 11191 ax-i2m1 11192 ax-1ne0 11193 ax-1rid 11194 ax-rnegex 11195 ax-rrecex 11196 ax-cnre 11197 ax-pre-lttri 11198 ax-pre-lttrn 11199 ax-pre-ltadd 11200 ax-pre-mulgt0 11201 ax-pre-sup 11202

This theorem depends on definitions: df-bi 206 df-an 396 df-or 847 df-3or 1086 df-3an 1087 df-tru 1537 df-fal 1547 df-ex 1775 df-nf 1779 df-sb 2061 df-mo 2529 df-eu 2558 df-clab 2705 df-cleq 2719 df-clel 2805 df-nfc 2880 df-ne 2936 df-nel 3042 df-ral 3057 df-rex 3066 df-rmo 3371 df-reu 3372 df-rab 3428 df-v 3471 df-sbc 3775 df-csb 3890 df-dif 3947 df-un 3949 df-in 3951 df-ss 3961 df-pss 3963 df-nul 4319 df-if 4525 df-pw 4600 df-sn 4625 df-pr 4627 df-tp 4629 df-op 4631 df-uni 4904 df-int 4945 df-iun 4993 df-iin 4994 df-br 5143 df-opab 5205 df-mpt 5226 df-tr 5260 df-id 5570 df-eprel 5576 df-po 5584 df-so 5585 df-fr 5627 df-we 5629 df-xp 5678 df-rel 5679 df-cnv 5680 df-co 5681 df-dm 5682 df-rn 5683 df-res 5684 df-ima 5685 df-pred 6299 df-ord 6366 df-on 6367 df-lim 6368 df-suc 6369 df-iota 6494 df-fun 6544 df-fn 6545 df-f 6546 df-f1 6547 df-fo 6548 df-f1o 6549 df-fv 6550 df-riota 7370 df-ov 7417 df-oprab 7418 df-mpo 7419 df-om 7863 df-1st 7985 df-2nd 7986 df-frecs 8278 df-wrecs 8309 df-recs 8383 df-rdg 8422 df-1o 8478 df-er 8716 df-map 8836 df-pm 8837 df-en 8954 df-dom 8955 df-sdom 8956 df-fin 8957 df-fi 9420 df-sup 9451 df-inf 9452 df-pnf 11266 df-mnf 11267 df-xr 11268 df-ltxr 11269 df-le 11270 df-sub 11462 df-neg 11463 df-div 11888 df-nn 12229 df-2 12291 df-3 12292 df-4 12293 df-5 12294 df-6 12295 df-7 12296 df-8 12297 df-9 12298 df-n0 12489 df-z 12575 df-dec 12694 df-uz 12839 df-q 12949 df-rp 12993 df-xneg 13110 df-xadd 13111 df-xmul 13112 df-fz 13503 df-seq 13985 df-exp 14045 df-cj 15064 df-re 15065 df-im 15066 df-sqrt 15200 df-abs 15201 df-struct 17101 df-slot 17136 df-ndx 17148 df-base 17166 df-plusg 17231 df-mulr 17232 df-starv 17233 df-tset 17237 df-ple 17238 df-ds 17240 df-unif 17241 df-rest 17389 df-topn 17390 df-topgen 17410 df-psmet 21251 df-xmet 21252 df-met 21253 df-bl 21254 df-mopn 21255 df-cnfld 21260 df-top 22770 df-topon 22787 df-topsp 22809 df-bases 22823 df-cld 22897 df-ntr 22898 df-cls 22899 df-cnp 23106 df-xms 24200 df-ms 24201 df-limc 25769 df-dv 25770

This theorem is referenced by: dvres 25814

W3C validator