Theorem cnptoprest2 13034

Description: Equivalence of point-continuity in the parent topology and point-continuity in a subspace. (Contributed by Mario Carneiro, 9-Aug-2014.) (Revised by Jim Kingdon, 6-Apr-2023.)

Hypotheses

Ref	Expression
cnprest.1	⊢ 𝑋 = ∪ 𝐽
cnprest.2	⊢ 𝑌 = ∪ 𝐾

Assertion

Ref	Expression
cnptoprest2	⊢ (((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) → (𝐹 ∈ ((𝐽 CnP 𝐾)‘𝑃) ↔ 𝐹 ∈ ((𝐽 CnP (𝐾 ↾t 𝐵))‘𝑃)))

Proof of Theorem cnptoprest2

Dummy variables 𝑥 𝑦 𝑧 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		cnprest.1	. . . . . . . 8 ⊢ 𝑋 = ∪ 𝐽
2	1	toptopon 12810	. . . . . . 7 ⊢ (𝐽 ∈ Top ↔ 𝐽 ∈ (TopOn‘𝑋))
3	2	biimpi 119	. . . . . 6 ⊢ (𝐽 ∈ Top → 𝐽 ∈ (TopOn‘𝑋))
4	3	ad2antrr 485	. . . . 5 ⊢ (((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) → 𝐽 ∈ (TopOn‘𝑋))
5	4	adantr 274	. . . 4 ⊢ ((((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) ∧ 𝐹 ∈ ((𝐽 CnP 𝐾)‘𝑃)) → 𝐽 ∈ (TopOn‘𝑋))
6		simplr 525	. . . . 5 ⊢ (((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) → 𝐾 ∈ Top)
7	6	adantr 274	. . . 4 ⊢ ((((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) ∧ 𝐹 ∈ ((𝐽 CnP 𝐾)‘𝑃)) → 𝐾 ∈ Top)
8		simpr 109	. . . 4 ⊢ ((((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) ∧ 𝐹 ∈ ((𝐽 CnP 𝐾)‘𝑃)) → 𝐹 ∈ ((𝐽 CnP 𝐾)‘𝑃))
9		cnprcl2k 13000	. . . 4 ⊢ ((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐾 ∈ Top ∧ 𝐹 ∈ ((𝐽 CnP 𝐾)‘𝑃)) → 𝑃 ∈ 𝑋)
10	5, 7, 8, 9	syl3anc 1233	. . 3 ⊢ ((((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) ∧ 𝐹 ∈ ((𝐽 CnP 𝐾)‘𝑃)) → 𝑃 ∈ 𝑋)
11	10	ex 114	. 2 ⊢ (((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) → (𝐹 ∈ ((𝐽 CnP 𝐾)‘𝑃) → 𝑃 ∈ 𝑋))
12	4	adantr 274	. . . 4 ⊢ ((((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) ∧ 𝐹 ∈ ((𝐽 CnP (𝐾 ↾t 𝐵))‘𝑃)) → 𝐽 ∈ (TopOn‘𝑋))
13		cnprest.2	. . . . . . . . 9 ⊢ 𝑌 = ∪ 𝐾
14		uniexg 4424	. . . . . . . . 9 ⊢ (𝐾 ∈ Top → ∪ 𝐾 ∈ V)
15	13, 14	eqeltrid 2257	. . . . . . . 8 ⊢ (𝐾 ∈ Top → 𝑌 ∈ V)
16	6, 15	syl 14	. . . . . . 7 ⊢ (((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) → 𝑌 ∈ V)
17		simprr 527	. . . . . . 7 ⊢ (((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) → 𝐵 ⊆ 𝑌)
18	16, 17	ssexd 4129	. . . . . 6 ⊢ (((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) → 𝐵 ∈ V)
19		resttop 12964	. . . . . 6 ⊢ ((𝐾 ∈ Top ∧ 𝐵 ∈ V) → (𝐾 ↾t 𝐵) ∈ Top)
20	6, 18, 19	syl2anc 409	. . . . 5 ⊢ (((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) → (𝐾 ↾t 𝐵) ∈ Top)
21	20	adantr 274	. . . 4 ⊢ ((((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) ∧ 𝐹 ∈ ((𝐽 CnP (𝐾 ↾t 𝐵))‘𝑃)) → (𝐾 ↾t 𝐵) ∈ Top)
22		simpr 109	. . . 4 ⊢ ((((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) ∧ 𝐹 ∈ ((𝐽 CnP (𝐾 ↾t 𝐵))‘𝑃)) → 𝐹 ∈ ((𝐽 CnP (𝐾 ↾t 𝐵))‘𝑃))
23		cnprcl2k 13000	. . . 4 ⊢ ((𝐽 ∈ (TopOn‘𝑋) ∧ (𝐾 ↾t 𝐵) ∈ Top ∧ 𝐹 ∈ ((𝐽 CnP (𝐾 ↾t 𝐵))‘𝑃)) → 𝑃 ∈ 𝑋)
24	12, 21, 22, 23	syl3anc 1233	. . 3 ⊢ ((((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) ∧ 𝐹 ∈ ((𝐽 CnP (𝐾 ↾t 𝐵))‘𝑃)) → 𝑃 ∈ 𝑋)
25	24	ex 114	. 2 ⊢ (((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) → (𝐹 ∈ ((𝐽 CnP (𝐾 ↾t 𝐵))‘𝑃) → 𝑃 ∈ 𝑋))
26		simprl 526	. . . . . . . . . 10 ⊢ (((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) → 𝐹:𝑋⟶𝐵)
27	26	ffvelrnda 5631	. . . . . . . . 9 ⊢ ((((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) ∧ 𝑃 ∈ 𝑋) → (𝐹‘𝑃) ∈ 𝐵)
28	27	biantrud 302	. . . . . . . 8 ⊢ ((((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) ∧ 𝑃 ∈ 𝑋) → ((𝐹‘𝑃) ∈ 𝑥 ↔ ((𝐹‘𝑃) ∈ 𝑥 ∧ (𝐹‘𝑃) ∈ 𝐵)))
29		elin 3310	. . . . . . . 8 ⊢ ((𝐹‘𝑃) ∈ (𝑥 ∩ 𝐵) ↔ ((𝐹‘𝑃) ∈ 𝑥 ∧ (𝐹‘𝑃) ∈ 𝐵))
30	28, 29	bitr4di 197	. . . . . . 7 ⊢ ((((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) ∧ 𝑃 ∈ 𝑋) → ((𝐹‘𝑃) ∈ 𝑥 ↔ (𝐹‘𝑃) ∈ (𝑥 ∩ 𝐵)))
31		imassrn 4964	. . . . . . . . . . . 12 ⊢ (𝐹 “ 𝑦) ⊆ ran 𝐹
32		simplrl 530	. . . . . . . . . . . . 13 ⊢ ((((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) ∧ 𝑃 ∈ 𝑋) → 𝐹:𝑋⟶𝐵)
33	32	frnd 5357	. . . . . . . . . . . 12 ⊢ ((((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) ∧ 𝑃 ∈ 𝑋) → ran 𝐹 ⊆ 𝐵)
34	31, 33	sstrid 3158	. . . . . . . . . . 11 ⊢ ((((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) ∧ 𝑃 ∈ 𝑋) → (𝐹 “ 𝑦) ⊆ 𝐵)
35	34	biantrud 302	. . . . . . . . . 10 ⊢ ((((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) ∧ 𝑃 ∈ 𝑋) → ((𝐹 “ 𝑦) ⊆ 𝑥 ↔ ((𝐹 “ 𝑦) ⊆ 𝑥 ∧ (𝐹 “ 𝑦) ⊆ 𝐵)))
36		ssin 3349	. . . . . . . . . 10 ⊢ (((𝐹 “ 𝑦) ⊆ 𝑥 ∧ (𝐹 “ 𝑦) ⊆ 𝐵) ↔ (𝐹 “ 𝑦) ⊆ (𝑥 ∩ 𝐵))
37	35, 36	bitrdi 195	. . . . . . . . 9 ⊢ ((((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) ∧ 𝑃 ∈ 𝑋) → ((𝐹 “ 𝑦) ⊆ 𝑥 ↔ (𝐹 “ 𝑦) ⊆ (𝑥 ∩ 𝐵)))
38	37	anbi2d 461	. . . . . . . 8 ⊢ ((((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) ∧ 𝑃 ∈ 𝑋) → ((𝑃 ∈ 𝑦 ∧ (𝐹 “ 𝑦) ⊆ 𝑥) ↔ (𝑃 ∈ 𝑦 ∧ (𝐹 “ 𝑦) ⊆ (𝑥 ∩ 𝐵))))
39	38	rexbidv 2471	. . . . . . 7 ⊢ ((((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) ∧ 𝑃 ∈ 𝑋) → (∃𝑦 ∈ 𝐽 (𝑃 ∈ 𝑦 ∧ (𝐹 “ 𝑦) ⊆ 𝑥) ↔ ∃𝑦 ∈ 𝐽 (𝑃 ∈ 𝑦 ∧ (𝐹 “ 𝑦) ⊆ (𝑥 ∩ 𝐵))))
40	30, 39	imbi12d 233	. . . . . 6 ⊢ ((((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) ∧ 𝑃 ∈ 𝑋) → (((𝐹‘𝑃) ∈ 𝑥 → ∃𝑦 ∈ 𝐽 (𝑃 ∈ 𝑦 ∧ (𝐹 “ 𝑦) ⊆ 𝑥)) ↔ ((𝐹‘𝑃) ∈ (𝑥 ∩ 𝐵) → ∃𝑦 ∈ 𝐽 (𝑃 ∈ 𝑦 ∧ (𝐹 “ 𝑦) ⊆ (𝑥 ∩ 𝐵)))))
41	40	ralbidv 2470	. . . . 5 ⊢ ((((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) ∧ 𝑃 ∈ 𝑋) → (∀𝑥 ∈ 𝐾 ((𝐹‘𝑃) ∈ 𝑥 → ∃𝑦 ∈ 𝐽 (𝑃 ∈ 𝑦 ∧ (𝐹 “ 𝑦) ⊆ 𝑥)) ↔ ∀𝑥 ∈ 𝐾 ((𝐹‘𝑃) ∈ (𝑥 ∩ 𝐵) → ∃𝑦 ∈ 𝐽 (𝑃 ∈ 𝑦 ∧ (𝐹 “ 𝑦) ⊆ (𝑥 ∩ 𝐵)))))
42		vex 2733	. . . . . . . 8 ⊢ 𝑥 ∈ V
43	42	inex1 4123	. . . . . . 7 ⊢ (𝑥 ∩ 𝐵) ∈ V
44	43	a1i 9	. . . . . 6 ⊢ (((((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) ∧ 𝑃 ∈ 𝑋) ∧ 𝑥 ∈ 𝐾) → (𝑥 ∩ 𝐵) ∈ V)
45	6	adantr 274	. . . . . . 7 ⊢ ((((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) ∧ 𝑃 ∈ 𝑋) → 𝐾 ∈ Top)
46	18	adantr 274	. . . . . . 7 ⊢ ((((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) ∧ 𝑃 ∈ 𝑋) → 𝐵 ∈ V)
47		elrest 12586	. . . . . . 7 ⊢ ((𝐾 ∈ Top ∧ 𝐵 ∈ V) → (𝑧 ∈ (𝐾 ↾t 𝐵) ↔ ∃𝑥 ∈ 𝐾 𝑧 = (𝑥 ∩ 𝐵)))
48	45, 46, 47	syl2anc 409	. . . . . 6 ⊢ ((((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) ∧ 𝑃 ∈ 𝑋) → (𝑧 ∈ (𝐾 ↾t 𝐵) ↔ ∃𝑥 ∈ 𝐾 𝑧 = (𝑥 ∩ 𝐵)))
49		eleq2 2234	. . . . . . . 8 ⊢ (𝑧 = (𝑥 ∩ 𝐵) → ((𝐹‘𝑃) ∈ 𝑧 ↔ (𝐹‘𝑃) ∈ (𝑥 ∩ 𝐵)))
50		sseq2 3171	. . . . . . . . . 10 ⊢ (𝑧 = (𝑥 ∩ 𝐵) → ((𝐹 “ 𝑦) ⊆ 𝑧 ↔ (𝐹 “ 𝑦) ⊆ (𝑥 ∩ 𝐵)))
51	50	anbi2d 461	. . . . . . . . 9 ⊢ (𝑧 = (𝑥 ∩ 𝐵) → ((𝑃 ∈ 𝑦 ∧ (𝐹 “ 𝑦) ⊆ 𝑧) ↔ (𝑃 ∈ 𝑦 ∧ (𝐹 “ 𝑦) ⊆ (𝑥 ∩ 𝐵))))
52	51	rexbidv 2471	. . . . . . . 8 ⊢ (𝑧 = (𝑥 ∩ 𝐵) → (∃𝑦 ∈ 𝐽 (𝑃 ∈ 𝑦 ∧ (𝐹 “ 𝑦) ⊆ 𝑧) ↔ ∃𝑦 ∈ 𝐽 (𝑃 ∈ 𝑦 ∧ (𝐹 “ 𝑦) ⊆ (𝑥 ∩ 𝐵))))
53	49, 52	imbi12d 233	. . . . . . 7 ⊢ (𝑧 = (𝑥 ∩ 𝐵) → (((𝐹‘𝑃) ∈ 𝑧 → ∃𝑦 ∈ 𝐽 (𝑃 ∈ 𝑦 ∧ (𝐹 “ 𝑦) ⊆ 𝑧)) ↔ ((𝐹‘𝑃) ∈ (𝑥 ∩ 𝐵) → ∃𝑦 ∈ 𝐽 (𝑃 ∈ 𝑦 ∧ (𝐹 “ 𝑦) ⊆ (𝑥 ∩ 𝐵)))))
54	53	adantl 275	. . . . . 6 ⊢ (((((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) ∧ 𝑃 ∈ 𝑋) ∧ 𝑧 = (𝑥 ∩ 𝐵)) → (((𝐹‘𝑃) ∈ 𝑧 → ∃𝑦 ∈ 𝐽 (𝑃 ∈ 𝑦 ∧ (𝐹 “ 𝑦) ⊆ 𝑧)) ↔ ((𝐹‘𝑃) ∈ (𝑥 ∩ 𝐵) → ∃𝑦 ∈ 𝐽 (𝑃 ∈ 𝑦 ∧ (𝐹 “ 𝑦) ⊆ (𝑥 ∩ 𝐵)))))
55	44, 48, 54	ralxfr2d 4449	. . . . 5 ⊢ ((((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) ∧ 𝑃 ∈ 𝑋) → (∀𝑧 ∈ (𝐾 ↾t 𝐵)((𝐹‘𝑃) ∈ 𝑧 → ∃𝑦 ∈ 𝐽 (𝑃 ∈ 𝑦 ∧ (𝐹 “ 𝑦) ⊆ 𝑧)) ↔ ∀𝑥 ∈ 𝐾 ((𝐹‘𝑃) ∈ (𝑥 ∩ 𝐵) → ∃𝑦 ∈ 𝐽 (𝑃 ∈ 𝑦 ∧ (𝐹 “ 𝑦) ⊆ (𝑥 ∩ 𝐵)))))
56	41, 55	bitr4d 190	. . . 4 ⊢ ((((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) ∧ 𝑃 ∈ 𝑋) → (∀𝑥 ∈ 𝐾 ((𝐹‘𝑃) ∈ 𝑥 → ∃𝑦 ∈ 𝐽 (𝑃 ∈ 𝑦 ∧ (𝐹 “ 𝑦) ⊆ 𝑥)) ↔ ∀𝑧 ∈ (𝐾 ↾t 𝐵)((𝐹‘𝑃) ∈ 𝑧 → ∃𝑦 ∈ 𝐽 (𝑃 ∈ 𝑦 ∧ (𝐹 “ 𝑦) ⊆ 𝑧))))
57	4	adantr 274	. . . . . 6 ⊢ ((((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) ∧ 𝑃 ∈ 𝑋) → 𝐽 ∈ (TopOn‘𝑋))
58	13	toptopon 12810	. . . . . . 7 ⊢ (𝐾 ∈ Top ↔ 𝐾 ∈ (TopOn‘𝑌))
59	45, 58	sylib 121	. . . . . 6 ⊢ ((((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) ∧ 𝑃 ∈ 𝑋) → 𝐾 ∈ (TopOn‘𝑌))
60		simpr 109	. . . . . 6 ⊢ ((((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) ∧ 𝑃 ∈ 𝑋) → 𝑃 ∈ 𝑋)
61		iscnp 12993	. . . . . 6 ⊢ ((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐾 ∈ (TopOn‘𝑌) ∧ 𝑃 ∈ 𝑋) → (𝐹 ∈ ((𝐽 CnP 𝐾)‘𝑃) ↔ (𝐹:𝑋⟶𝑌 ∧ ∀𝑥 ∈ 𝐾 ((𝐹‘𝑃) ∈ 𝑥 → ∃𝑦 ∈ 𝐽 (𝑃 ∈ 𝑦 ∧ (𝐹 “ 𝑦) ⊆ 𝑥)))))
62	57, 59, 60, 61	syl3anc 1233	. . . . 5 ⊢ ((((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) ∧ 𝑃 ∈ 𝑋) → (𝐹 ∈ ((𝐽 CnP 𝐾)‘𝑃) ↔ (𝐹:𝑋⟶𝑌 ∧ ∀𝑥 ∈ 𝐾 ((𝐹‘𝑃) ∈ 𝑥 → ∃𝑦 ∈ 𝐽 (𝑃 ∈ 𝑦 ∧ (𝐹 “ 𝑦) ⊆ 𝑥)))))
63	17	adantr 274	. . . . . . 7 ⊢ ((((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) ∧ 𝑃 ∈ 𝑋) → 𝐵 ⊆ 𝑌)
64	32, 63	fssd 5360	. . . . . 6 ⊢ ((((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) ∧ 𝑃 ∈ 𝑋) → 𝐹:𝑋⟶𝑌)
65	64	biantrurd 303	. . . . 5 ⊢ ((((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) ∧ 𝑃 ∈ 𝑋) → (∀𝑥 ∈ 𝐾 ((𝐹‘𝑃) ∈ 𝑥 → ∃𝑦 ∈ 𝐽 (𝑃 ∈ 𝑦 ∧ (𝐹 “ 𝑦) ⊆ 𝑥)) ↔ (𝐹:𝑋⟶𝑌 ∧ ∀𝑥 ∈ 𝐾 ((𝐹‘𝑃) ∈ 𝑥 → ∃𝑦 ∈ 𝐽 (𝑃 ∈ 𝑦 ∧ (𝐹 “ 𝑦) ⊆ 𝑥)))))
66	62, 65	bitr4d 190	. . . 4 ⊢ ((((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) ∧ 𝑃 ∈ 𝑋) → (𝐹 ∈ ((𝐽 CnP 𝐾)‘𝑃) ↔ ∀𝑥 ∈ 𝐾 ((𝐹‘𝑃) ∈ 𝑥 → ∃𝑦 ∈ 𝐽 (𝑃 ∈ 𝑦 ∧ (𝐹 “ 𝑦) ⊆ 𝑥))))
67		resttopon 12965	. . . . . . 7 ⊢ ((𝐾 ∈ (TopOn‘𝑌) ∧ 𝐵 ⊆ 𝑌) → (𝐾 ↾t 𝐵) ∈ (TopOn‘𝐵))
68	59, 63, 67	syl2anc 409	. . . . . 6 ⊢ ((((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) ∧ 𝑃 ∈ 𝑋) → (𝐾 ↾t 𝐵) ∈ (TopOn‘𝐵))
69		iscnp 12993	. . . . . 6 ⊢ ((𝐽 ∈ (TopOn‘𝑋) ∧ (𝐾 ↾t 𝐵) ∈ (TopOn‘𝐵) ∧ 𝑃 ∈ 𝑋) → (𝐹 ∈ ((𝐽 CnP (𝐾 ↾t 𝐵))‘𝑃) ↔ (𝐹:𝑋⟶𝐵 ∧ ∀𝑧 ∈ (𝐾 ↾t 𝐵)((𝐹‘𝑃) ∈ 𝑧 → ∃𝑦 ∈ 𝐽 (𝑃 ∈ 𝑦 ∧ (𝐹 “ 𝑦) ⊆ 𝑧)))))
70	57, 68, 60, 69	syl3anc 1233	. . . . 5 ⊢ ((((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) ∧ 𝑃 ∈ 𝑋) → (𝐹 ∈ ((𝐽 CnP (𝐾 ↾t 𝐵))‘𝑃) ↔ (𝐹:𝑋⟶𝐵 ∧ ∀𝑧 ∈ (𝐾 ↾t 𝐵)((𝐹‘𝑃) ∈ 𝑧 → ∃𝑦 ∈ 𝐽 (𝑃 ∈ 𝑦 ∧ (𝐹 “ 𝑦) ⊆ 𝑧)))))
71	26	biantrurd 303	. . . . . 6 ⊢ (((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) → (∀𝑧 ∈ (𝐾 ↾t 𝐵)((𝐹‘𝑃) ∈ 𝑧 → ∃𝑦 ∈ 𝐽 (𝑃 ∈ 𝑦 ∧ (𝐹 “ 𝑦) ⊆ 𝑧)) ↔ (𝐹:𝑋⟶𝐵 ∧ ∀𝑧 ∈ (𝐾 ↾t 𝐵)((𝐹‘𝑃) ∈ 𝑧 → ∃𝑦 ∈ 𝐽 (𝑃 ∈ 𝑦 ∧ (𝐹 “ 𝑦) ⊆ 𝑧)))))
72	71	adantr 274	. . . . 5 ⊢ ((((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) ∧ 𝑃 ∈ 𝑋) → (∀𝑧 ∈ (𝐾 ↾t 𝐵)((𝐹‘𝑃) ∈ 𝑧 → ∃𝑦 ∈ 𝐽 (𝑃 ∈ 𝑦 ∧ (𝐹 “ 𝑦) ⊆ 𝑧)) ↔ (𝐹:𝑋⟶𝐵 ∧ ∀𝑧 ∈ (𝐾 ↾t 𝐵)((𝐹‘𝑃) ∈ 𝑧 → ∃𝑦 ∈ 𝐽 (𝑃 ∈ 𝑦 ∧ (𝐹 “ 𝑦) ⊆ 𝑧)))))
73	70, 72	bitr4d 190	. . . 4 ⊢ ((((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) ∧ 𝑃 ∈ 𝑋) → (𝐹 ∈ ((𝐽 CnP (𝐾 ↾t 𝐵))‘𝑃) ↔ ∀𝑧 ∈ (𝐾 ↾t 𝐵)((𝐹‘𝑃) ∈ 𝑧 → ∃𝑦 ∈ 𝐽 (𝑃 ∈ 𝑦 ∧ (𝐹 “ 𝑦) ⊆ 𝑧))))
74	56, 66, 73	3bitr4d 219	. . 3 ⊢ ((((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) ∧ 𝑃 ∈ 𝑋) → (𝐹 ∈ ((𝐽 CnP 𝐾)‘𝑃) ↔ 𝐹 ∈ ((𝐽 CnP (𝐾 ↾t 𝐵))‘𝑃)))
75	74	ex 114	. 2 ⊢ (((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) → (𝑃 ∈ 𝑋 → (𝐹 ∈ ((𝐽 CnP 𝐾)‘𝑃) ↔ 𝐹 ∈ ((𝐽 CnP (𝐾 ↾t 𝐵))‘𝑃))))
76	11, 25, 75	pm5.21ndd 700	1 ⊢ (((𝐽 ∈ Top ∧ 𝐾 ∈ Top) ∧ (𝐹:𝑋⟶𝐵 ∧ 𝐵 ⊆ 𝑌)) → (𝐹 ∈ ((𝐽 CnP 𝐾)‘𝑃) ↔ 𝐹 ∈ ((𝐽 CnP (𝐾 ↾t 𝐵))‘𝑃)))

Syntax hints:   → wi 4   ∧ wa 103   ↔ wb 104   = wceq 1348   ∈ wcel 2141  ∀wral 2448  ∃wrex 2449  Vcvv 2730   ∩ cin 3120   ⊆ wss 3121  ∪ cuni 3796  ran crn 4612   “ cima 4614  ⟶wf 5194  ‘cfv 5198  (class class class)co 5853   ↾_t crest 12579  Topctop 12789  TopOnctopon 12802   CnP ccnp 12980

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-in1 609  ax-in2 610  ax-io 704  ax-5 1440  ax-7 1441  ax-gen 1442  ax-ie1 1486  ax-ie2 1487  ax-8 1497  ax-10 1498  ax-11 1499  ax-i12 1500  ax-bndl 1502  ax-4 1503  ax-17 1519  ax-i9 1523  ax-ial 1527  ax-i5r 1528  ax-13 2143  ax-14 2144  ax-ext 2152  ax-coll 4104  ax-sep 4107  ax-pow 4160  ax-pr 4194  ax-un 4418  ax-setind 4521

This theorem depends on definitions:  df-bi 116  df-3an 975  df-tru 1351  df-fal 1354  df-nf 1454  df-sb 1756  df-eu 2022  df-mo 2023  df-clab 2157  df-cleq 2163  df-clel 2166  df-nfc 2301  df-ne 2341  df-ral 2453  df-rex 2454  df-reu 2455  df-rab 2457  df-v 2732  df-sbc 2956  df-csb 3050  df-dif 3123  df-un 3125  df-in 3127  df-ss 3134  df-pw 3568  df-sn 3589  df-pr 3590  df-op 3592  df-uni 3797  df-iun 3875  df-br 3990  df-opab 4051  df-mpt 4052  df-id 4278  df-xp 4617  df-rel 4618  df-cnv 4619  df-co 4620  df-dm 4621  df-rn 4622  df-res 4623  df-ima 4624  df-iota 5160  df-fun 5200  df-fn 5201  df-f 5202  df-f1 5203  df-fo 5204  df-f1o 5205  df-fv 5206  df-ov 5856  df-oprab 5857  df-mpo 5858  df-1st 6119  df-2nd 6120  df-map 6628  df-rest 12581  df-topgen 12600  df-top 12790  df-topon 12803  df-bases 12835  df-cnp 12983

This theorem is referenced by: (None)