Theorem utop3cls 24373

Description: Relation between a topological closure and a symmetric entourage in an uniform space. Second part of proposition 2 of [BourbakiTop1] p. II.4. (Contributed by Thierry Arnoux, 17-Jan-2018.)

Hypothesis

Ref	Expression
utoptop.1	⊢ 𝐽 = (unifTop‘𝑈)

Assertion

Ref	Expression
utop3cls	⊢ (((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑀 ⊆ (𝑋 × 𝑋)) ∧ (𝑉 ∈ 𝑈 ∧ ◡𝑉 = 𝑉)) → ((cls‘(𝐽 ×t 𝐽))‘𝑀) ⊆ (𝑉 ∘ (𝑀 ∘ 𝑉)))

Proof of Theorem utop3cls

Dummy variables 𝑟 𝑧 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		relxp 5677	. . . . 5 ⊢ Rel (𝑋 × 𝑋)
2		utoptop.1	. . . . . . . . . . 11 ⊢ 𝐽 = (unifTop‘𝑈)
3		utoptop 24356	. . . . . . . . . . 11 ⊢ (𝑈 ∈ (UnifOn‘𝑋) → (unifTop‘𝑈) ∈ Top)
4	2, 3	eqeltrid 2873	. . . . . . . . . 10 ⊢ (𝑈 ∈ (UnifOn‘𝑋) → 𝐽 ∈ Top)
5		txtop 23691	. . . . . . . . . 10 ⊢ ((𝐽 ∈ Top ∧ 𝐽 ∈ Top) → (𝐽 ×t 𝐽) ∈ Top)
6	4, 4, 5	syl2anc 595	. . . . . . . . 9 ⊢ (𝑈 ∈ (UnifOn‘𝑋) → (𝐽 ×t 𝐽) ∈ Top)
7	6	ad3antrrr 742	. . . . . . . 8 ⊢ ((((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑀 ⊆ (𝑋 × 𝑋)) ∧ (𝑉 ∈ 𝑈 ∧ ◡𝑉 = 𝑉)) ∧ 𝑧 ∈ ((cls‘(𝐽 ×t 𝐽))‘𝑀)) → (𝐽 ×t 𝐽) ∈ Top)
8		simpllr 787	. . . . . . . . 9 ⊢ ((((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑀 ⊆ (𝑋 × 𝑋)) ∧ (𝑉 ∈ 𝑈 ∧ ◡𝑉 = 𝑉)) ∧ 𝑧 ∈ ((cls‘(𝐽 ×t 𝐽))‘𝑀)) → 𝑀 ⊆ (𝑋 × 𝑋))
9		utoptopon 24358	. . . . . . . . . . . . . 14 ⊢ (𝑈 ∈ (UnifOn‘𝑋) → (unifTop‘𝑈) ∈ (TopOn‘𝑋))
10	2, 9	eqeltrid 2873	. . . . . . . . . . . . 13 ⊢ (𝑈 ∈ (UnifOn‘𝑋) → 𝐽 ∈ (TopOn‘𝑋))
11		toponuni 23036	. . . . . . . . . . . . 13 ⊢ (𝐽 ∈ (TopOn‘𝑋) → 𝑋 = ∪ 𝐽)
12	10, 11	syl 18	. . . . . . . . . . . 12 ⊢ (𝑈 ∈ (UnifOn‘𝑋) → 𝑋 = ∪ 𝐽)
13	12	sqxpeqd 5691	. . . . . . . . . . 11 ⊢ (𝑈 ∈ (UnifOn‘𝑋) → (𝑋 × 𝑋) = (∪ 𝐽 × ∪ 𝐽))
14		eqid 2769	. . . . . . . . . . . . 13 ⊢ ∪ 𝐽 = ∪ 𝐽
15	14, 14	txuni 23714	. . . . . . . . . . . 12 ⊢ ((𝐽 ∈ Top ∧ 𝐽 ∈ Top) → (∪ 𝐽 × ∪ 𝐽) = ∪ (𝐽 ×t 𝐽))
16	4, 4, 15	syl2anc 595	. . . . . . . . . . 11 ⊢ (𝑈 ∈ (UnifOn‘𝑋) → (∪ 𝐽 × ∪ 𝐽) = ∪ (𝐽 ×t 𝐽))
17	13, 16	eqtrd 2804	. . . . . . . . . 10 ⊢ (𝑈 ∈ (UnifOn‘𝑋) → (𝑋 × 𝑋) = ∪ (𝐽 ×t 𝐽))
18	17	ad3antrrr 742	. . . . . . . . 9 ⊢ ((((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑀 ⊆ (𝑋 × 𝑋)) ∧ (𝑉 ∈ 𝑈 ∧ ◡𝑉 = 𝑉)) ∧ 𝑧 ∈ ((cls‘(𝐽 ×t 𝐽))‘𝑀)) → (𝑋 × 𝑋) = ∪ (𝐽 ×t 𝐽))
19	8, 18	sseqtrd 3981	. . . . . . . 8 ⊢ ((((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑀 ⊆ (𝑋 × 𝑋)) ∧ (𝑉 ∈ 𝑈 ∧ ◡𝑉 = 𝑉)) ∧ 𝑧 ∈ ((cls‘(𝐽 ×t 𝐽))‘𝑀)) → 𝑀 ⊆ ∪ (𝐽 ×t 𝐽))
20		eqid 2769	. . . . . . . . 9 ⊢ ∪ (𝐽 ×t 𝐽) = ∪ (𝐽 ×t 𝐽)
21	20	clsss3 23181	. . . . . . . 8 ⊢ (((𝐽 ×t 𝐽) ∈ Top ∧ 𝑀 ⊆ ∪ (𝐽 ×t 𝐽)) → ((cls‘(𝐽 ×t 𝐽))‘𝑀) ⊆ ∪ (𝐽 ×t 𝐽))
22	7, 19, 21	syl2anc 595	. . . . . . 7 ⊢ ((((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑀 ⊆ (𝑋 × 𝑋)) ∧ (𝑉 ∈ 𝑈 ∧ ◡𝑉 = 𝑉)) ∧ 𝑧 ∈ ((cls‘(𝐽 ×t 𝐽))‘𝑀)) → ((cls‘(𝐽 ×t 𝐽))‘𝑀) ⊆ ∪ (𝐽 ×t 𝐽))
23	22, 18	sseqtrrd 3982	. . . . . 6 ⊢ ((((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑀 ⊆ (𝑋 × 𝑋)) ∧ (𝑉 ∈ 𝑈 ∧ ◡𝑉 = 𝑉)) ∧ 𝑧 ∈ ((cls‘(𝐽 ×t 𝐽))‘𝑀)) → ((cls‘(𝐽 ×t 𝐽))‘𝑀) ⊆ (𝑋 × 𝑋))
24		simpr 489	. . . . . 6 ⊢ ((((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑀 ⊆ (𝑋 × 𝑋)) ∧ (𝑉 ∈ 𝑈 ∧ ◡𝑉 = 𝑉)) ∧ 𝑧 ∈ ((cls‘(𝐽 ×t 𝐽))‘𝑀)) → 𝑧 ∈ ((cls‘(𝐽 ×t 𝐽))‘𝑀))
25	23, 24	sseldd 3946	. . . . 5 ⊢ ((((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑀 ⊆ (𝑋 × 𝑋)) ∧ (𝑉 ∈ 𝑈 ∧ ◡𝑉 = 𝑉)) ∧ 𝑧 ∈ ((cls‘(𝐽 ×t 𝐽))‘𝑀)) → 𝑧 ∈ (𝑋 × 𝑋))
26		1st2nd 8032	. . . . 5 ⊢ ((Rel (𝑋 × 𝑋) ∧ 𝑧 ∈ (𝑋 × 𝑋)) → 𝑧 = ⟨(1st ‘𝑧), (2nd ‘𝑧)⟩)
27	1, 25, 26	sylancr 598	. . . 4 ⊢ ((((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑀 ⊆ (𝑋 × 𝑋)) ∧ (𝑉 ∈ 𝑈 ∧ ◡𝑉 = 𝑉)) ∧ 𝑧 ∈ ((cls‘(𝐽 ×t 𝐽))‘𝑀)) → 𝑧 = ⟨(1st ‘𝑧), (2nd ‘𝑧)⟩)
28		simp-4l 794	. . . . . . . . . 10 ⊢ (((((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑀 ⊆ (𝑋 × 𝑋)) ∧ (𝑉 ∈ 𝑈 ∧ ◡𝑉 = 𝑉)) ∧ 𝑧 ∈ ((cls‘(𝐽 ×t 𝐽))‘𝑀)) ∧ 𝑟 ∈ (((𝑉 “ {(1st ‘𝑧)}) × (𝑉 “ {(2nd ‘𝑧)})) ∩ 𝑀)) → 𝑈 ∈ (UnifOn‘𝑋))
29		simpr1l 1247	. . . . . . . . . . 11 ⊢ (((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑀 ⊆ (𝑋 × 𝑋)) ∧ ((𝑉 ∈ 𝑈 ∧ ◡𝑉 = 𝑉) ∧ 𝑧 ∈ ((cls‘(𝐽 ×t 𝐽))‘𝑀) ∧ 𝑟 ∈ (((𝑉 “ {(1st ‘𝑧)}) × (𝑉 “ {(2nd ‘𝑧)})) ∩ 𝑀))) → 𝑉 ∈ 𝑈)
30	29	3anassrs 1379	. . . . . . . . . 10 ⊢ (((((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑀 ⊆ (𝑋 × 𝑋)) ∧ (𝑉 ∈ 𝑈 ∧ ◡𝑉 = 𝑉)) ∧ 𝑧 ∈ ((cls‘(𝐽 ×t 𝐽))‘𝑀)) ∧ 𝑟 ∈ (((𝑉 “ {(1st ‘𝑧)}) × (𝑉 “ {(2nd ‘𝑧)})) ∩ 𝑀)) → 𝑉 ∈ 𝑈)
31		ustrel 24334	. . . . . . . . . 10 ⊢ ((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑉 ∈ 𝑈) → Rel 𝑉)
32	28, 30, 31	syl2anc 595	. . . . . . . . 9 ⊢ (((((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑀 ⊆ (𝑋 × 𝑋)) ∧ (𝑉 ∈ 𝑈 ∧ ◡𝑉 = 𝑉)) ∧ 𝑧 ∈ ((cls‘(𝐽 ×t 𝐽))‘𝑀)) ∧ 𝑟 ∈ (((𝑉 “ {(1st ‘𝑧)}) × (𝑉 “ {(2nd ‘𝑧)})) ∩ 𝑀)) → Rel 𝑉)
33		simpr 489	. . . . . . . . . . . 12 ⊢ (((((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑀 ⊆ (𝑋 × 𝑋)) ∧ (𝑉 ∈ 𝑈 ∧ ◡𝑉 = 𝑉)) ∧ 𝑧 ∈ ((cls‘(𝐽 ×t 𝐽))‘𝑀)) ∧ 𝑟 ∈ (((𝑉 “ {(1st ‘𝑧)}) × (𝑉 “ {(2nd ‘𝑧)})) ∩ 𝑀)) → 𝑟 ∈ (((𝑉 “ {(1st ‘𝑧)}) × (𝑉 “ {(2nd ‘𝑧)})) ∩ 𝑀))
34		elin 3929	. . . . . . . . . . . 12 ⊢ (𝑟 ∈ (((𝑉 “ {(1st ‘𝑧)}) × (𝑉 “ {(2nd ‘𝑧)})) ∩ 𝑀) ↔ (𝑟 ∈ ((𝑉 “ {(1st ‘𝑧)}) × (𝑉 “ {(2nd ‘𝑧)})) ∧ 𝑟 ∈ 𝑀))
35	33, 34	sylib 221	. . . . . . . . . . 11 ⊢ (((((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑀 ⊆ (𝑋 × 𝑋)) ∧ (𝑉 ∈ 𝑈 ∧ ◡𝑉 = 𝑉)) ∧ 𝑧 ∈ ((cls‘(𝐽 ×t 𝐽))‘𝑀)) ∧ 𝑟 ∈ (((𝑉 “ {(1st ‘𝑧)}) × (𝑉 “ {(2nd ‘𝑧)})) ∩ 𝑀)) → (𝑟 ∈ ((𝑉 “ {(1st ‘𝑧)}) × (𝑉 “ {(2nd ‘𝑧)})) ∧ 𝑟 ∈ 𝑀))
36	35	simpld 499	. . . . . . . . . 10 ⊢ (((((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑀 ⊆ (𝑋 × 𝑋)) ∧ (𝑉 ∈ 𝑈 ∧ ◡𝑉 = 𝑉)) ∧ 𝑧 ∈ ((cls‘(𝐽 ×t 𝐽))‘𝑀)) ∧ 𝑟 ∈ (((𝑉 “ {(1st ‘𝑧)}) × (𝑉 “ {(2nd ‘𝑧)})) ∩ 𝑀)) → 𝑟 ∈ ((𝑉 “ {(1st ‘𝑧)}) × (𝑉 “ {(2nd ‘𝑧)})))
37		xp1st 8014	. . . . . . . . . 10 ⊢ (𝑟 ∈ ((𝑉 “ {(1st ‘𝑧)}) × (𝑉 “ {(2nd ‘𝑧)})) → (1st ‘𝑟) ∈ (𝑉 “ {(1st ‘𝑧)}))
38	36, 37	syl 18	. . . . . . . . 9 ⊢ (((((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑀 ⊆ (𝑋 × 𝑋)) ∧ (𝑉 ∈ 𝑈 ∧ ◡𝑉 = 𝑉)) ∧ 𝑧 ∈ ((cls‘(𝐽 ×t 𝐽))‘𝑀)) ∧ 𝑟 ∈ (((𝑉 “ {(1st ‘𝑧)}) × (𝑉 “ {(2nd ‘𝑧)})) ∩ 𝑀)) → (1st ‘𝑟) ∈ (𝑉 “ {(1st ‘𝑧)}))
39		elrelimasn 6086	. . . . . . . . . 10 ⊢ (Rel 𝑉 → ((1st ‘𝑟) ∈ (𝑉 “ {(1st ‘𝑧)}) ↔ (1st ‘𝑧)𝑉(1st ‘𝑟)))
40	39	biimpa 481	. . . . . . . . 9 ⊢ ((Rel 𝑉 ∧ (1st ‘𝑟) ∈ (𝑉 “ {(1st ‘𝑧)})) → (1st ‘𝑧)𝑉(1st ‘𝑟))
41	32, 38, 40	syl2anc 595	. . . . . . . 8 ⊢ (((((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑀 ⊆ (𝑋 × 𝑋)) ∧ (𝑉 ∈ 𝑈 ∧ ◡𝑉 = 𝑉)) ∧ 𝑧 ∈ ((cls‘(𝐽 ×t 𝐽))‘𝑀)) ∧ 𝑟 ∈ (((𝑉 “ {(1st ‘𝑧)}) × (𝑉 “ {(2nd ‘𝑧)})) ∩ 𝑀)) → (1st ‘𝑧)𝑉(1st ‘𝑟))
42		simp-4r 795	. . . . . . . . . . 11 ⊢ (((((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑀 ⊆ (𝑋 × 𝑋)) ∧ (𝑉 ∈ 𝑈 ∧ ◡𝑉 = 𝑉)) ∧ 𝑧 ∈ ((cls‘(𝐽 ×t 𝐽))‘𝑀)) ∧ 𝑟 ∈ (((𝑉 “ {(1st ‘𝑧)}) × (𝑉 “ {(2nd ‘𝑧)})) ∩ 𝑀)) → 𝑀 ⊆ (𝑋 × 𝑋))
43		xpss 5675	. . . . . . . . . . 11 ⊢ (𝑋 × 𝑋) ⊆ (V × V)
44	42, 43	sstrdi 3957	. . . . . . . . . 10 ⊢ (((((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑀 ⊆ (𝑋 × 𝑋)) ∧ (𝑉 ∈ 𝑈 ∧ ◡𝑉 = 𝑉)) ∧ 𝑧 ∈ ((cls‘(𝐽 ×t 𝐽))‘𝑀)) ∧ 𝑟 ∈ (((𝑉 “ {(1st ‘𝑧)}) × (𝑉 “ {(2nd ‘𝑧)})) ∩ 𝑀)) → 𝑀 ⊆ (V × V))
45		df-rel 5666	. . . . . . . . . 10 ⊢ (Rel 𝑀 ↔ 𝑀 ⊆ (V × V))
46	44, 45	sylibr 237	. . . . . . . . 9 ⊢ (((((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑀 ⊆ (𝑋 × 𝑋)) ∧ (𝑉 ∈ 𝑈 ∧ ◡𝑉 = 𝑉)) ∧ 𝑧 ∈ ((cls‘(𝐽 ×t 𝐽))‘𝑀)) ∧ 𝑟 ∈ (((𝑉 “ {(1st ‘𝑧)}) × (𝑉 “ {(2nd ‘𝑧)})) ∩ 𝑀)) → Rel 𝑀)
47	35	simprd 500	. . . . . . . . 9 ⊢ (((((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑀 ⊆ (𝑋 × 𝑋)) ∧ (𝑉 ∈ 𝑈 ∧ ◡𝑉 = 𝑉)) ∧ 𝑧 ∈ ((cls‘(𝐽 ×t 𝐽))‘𝑀)) ∧ 𝑟 ∈ (((𝑉 “ {(1st ‘𝑧)}) × (𝑉 “ {(2nd ‘𝑧)})) ∩ 𝑀)) → 𝑟 ∈ 𝑀)
48		1st2ndbr 8035	. . . . . . . . 9 ⊢ ((Rel 𝑀 ∧ 𝑟 ∈ 𝑀) → (1st ‘𝑟)𝑀(2nd ‘𝑟))
49	46, 47, 48	syl2anc 595	. . . . . . . 8 ⊢ (((((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑀 ⊆ (𝑋 × 𝑋)) ∧ (𝑉 ∈ 𝑈 ∧ ◡𝑉 = 𝑉)) ∧ 𝑧 ∈ ((cls‘(𝐽 ×t 𝐽))‘𝑀)) ∧ 𝑟 ∈ (((𝑉 “ {(1st ‘𝑧)}) × (𝑉 “ {(2nd ‘𝑧)})) ∩ 𝑀)) → (1st ‘𝑟)𝑀(2nd ‘𝑟))
50		xp2nd 8015	. . . . . . . . . . 11 ⊢ (𝑟 ∈ ((𝑉 “ {(1st ‘𝑧)}) × (𝑉 “ {(2nd ‘𝑧)})) → (2nd ‘𝑟) ∈ (𝑉 “ {(2nd ‘𝑧)}))
51	36, 50	syl 18	. . . . . . . . . 10 ⊢ (((((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑀 ⊆ (𝑋 × 𝑋)) ∧ (𝑉 ∈ 𝑈 ∧ ◡𝑉 = 𝑉)) ∧ 𝑧 ∈ ((cls‘(𝐽 ×t 𝐽))‘𝑀)) ∧ 𝑟 ∈ (((𝑉 “ {(1st ‘𝑧)}) × (𝑉 “ {(2nd ‘𝑧)})) ∩ 𝑀)) → (2nd ‘𝑟) ∈ (𝑉 “ {(2nd ‘𝑧)}))
52		elrelimasn 6086	. . . . . . . . . . 11 ⊢ (Rel 𝑉 → ((2nd ‘𝑟) ∈ (𝑉 “ {(2nd ‘𝑧)}) ↔ (2nd ‘𝑧)𝑉(2nd ‘𝑟)))
53	52	biimpa 481	. . . . . . . . . 10 ⊢ ((Rel 𝑉 ∧ (2nd ‘𝑟) ∈ (𝑉 “ {(2nd ‘𝑧)})) → (2nd ‘𝑧)𝑉(2nd ‘𝑟))
54	32, 51, 53	syl2anc 595	. . . . . . . . 9 ⊢ (((((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑀 ⊆ (𝑋 × 𝑋)) ∧ (𝑉 ∈ 𝑈 ∧ ◡𝑉 = 𝑉)) ∧ 𝑧 ∈ ((cls‘(𝐽 ×t 𝐽))‘𝑀)) ∧ 𝑟 ∈ (((𝑉 “ {(1st ‘𝑧)}) × (𝑉 “ {(2nd ‘𝑧)})) ∩ 𝑀)) → (2nd ‘𝑧)𝑉(2nd ‘𝑟))
55		simpr1r 1248	. . . . . . . . . . 11 ⊢ (((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑀 ⊆ (𝑋 × 𝑋)) ∧ ((𝑉 ∈ 𝑈 ∧ ◡𝑉 = 𝑉) ∧ 𝑧 ∈ ((cls‘(𝐽 ×t 𝐽))‘𝑀) ∧ 𝑟 ∈ (((𝑉 “ {(1st ‘𝑧)}) × (𝑉 “ {(2nd ‘𝑧)})) ∩ 𝑀))) → ◡𝑉 = 𝑉)
56	55	3anassrs 1379	. . . . . . . . . 10 ⊢ (((((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑀 ⊆ (𝑋 × 𝑋)) ∧ (𝑉 ∈ 𝑈 ∧ ◡𝑉 = 𝑉)) ∧ 𝑧 ∈ ((cls‘(𝐽 ×t 𝐽))‘𝑀)) ∧ 𝑟 ∈ (((𝑉 “ {(1st ‘𝑧)}) × (𝑉 “ {(2nd ‘𝑧)})) ∩ 𝑀)) → ◡𝑉 = 𝑉)
57		breq 5112	. . . . . . . . . . 11 ⊢ (◡𝑉 = 𝑉 → ((2nd ‘𝑟)◡𝑉(2nd ‘𝑧) ↔ (2nd ‘𝑟)𝑉(2nd ‘𝑧)))
58		fvex 6892	. . . . . . . . . . . 12 ⊢ (2nd ‘𝑟) ∈ V
59		fvex 6892	. . . . . . . . . . . 12 ⊢ (2nd ‘𝑧) ∈ V
60	58, 59	brcnv 5866	. . . . . . . . . . 11 ⊢ ((2nd ‘𝑟)◡𝑉(2nd ‘𝑧) ↔ (2nd ‘𝑧)𝑉(2nd ‘𝑟))
61	57, 60	bitr3di 289	. . . . . . . . . 10 ⊢ (◡𝑉 = 𝑉 → ((2nd ‘𝑟)𝑉(2nd ‘𝑧) ↔ (2nd ‘𝑧)𝑉(2nd ‘𝑟)))
62	56, 61	syl 18	. . . . . . . . 9 ⊢ (((((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑀 ⊆ (𝑋 × 𝑋)) ∧ (𝑉 ∈ 𝑈 ∧ ◡𝑉 = 𝑉)) ∧ 𝑧 ∈ ((cls‘(𝐽 ×t 𝐽))‘𝑀)) ∧ 𝑟 ∈ (((𝑉 “ {(1st ‘𝑧)}) × (𝑉 “ {(2nd ‘𝑧)})) ∩ 𝑀)) → ((2nd ‘𝑟)𝑉(2nd ‘𝑧) ↔ (2nd ‘𝑧)𝑉(2nd ‘𝑟)))
63	54, 62	mpbird 260	. . . . . . . 8 ⊢ (((((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑀 ⊆ (𝑋 × 𝑋)) ∧ (𝑉 ∈ 𝑈 ∧ ◡𝑉 = 𝑉)) ∧ 𝑧 ∈ ((cls‘(𝐽 ×t 𝐽))‘𝑀)) ∧ 𝑟 ∈ (((𝑉 “ {(1st ‘𝑧)}) × (𝑉 “ {(2nd ‘𝑧)})) ∩ 𝑀)) → (2nd ‘𝑟)𝑉(2nd ‘𝑧))
64		fvex 6892	. . . . . . . . . 10 ⊢ (1st ‘𝑧) ∈ V
65		fvex 6892	. . . . . . . . . 10 ⊢ (1st ‘𝑟) ∈ V
66		brcogw 5852	. . . . . . . . . . 11 ⊢ ((((1st ‘𝑧) ∈ V ∧ (2nd ‘𝑟) ∈ V ∧ (1st ‘𝑟) ∈ V) ∧ ((1st ‘𝑧)𝑉(1st ‘𝑟) ∧ (1st ‘𝑟)𝑀(2nd ‘𝑟))) → (1st ‘𝑧)(𝑀 ∘ 𝑉)(2nd ‘𝑟))
67	66	ex 417	. . . . . . . . . 10 ⊢ (((1st ‘𝑧) ∈ V ∧ (2nd ‘𝑟) ∈ V ∧ (1st ‘𝑟) ∈ V) → (((1st ‘𝑧)𝑉(1st ‘𝑟) ∧ (1st ‘𝑟)𝑀(2nd ‘𝑟)) → (1st ‘𝑧)(𝑀 ∘ 𝑉)(2nd ‘𝑟)))
68	64, 58, 65, 67	mp3an 1487	. . . . . . . . 9 ⊢ (((1st ‘𝑧)𝑉(1st ‘𝑟) ∧ (1st ‘𝑟)𝑀(2nd ‘𝑟)) → (1st ‘𝑧)(𝑀 ∘ 𝑉)(2nd ‘𝑟))
69		brcogw 5852	. . . . . . . . . . 11 ⊢ ((((1st ‘𝑧) ∈ V ∧ (2nd ‘𝑧) ∈ V ∧ (2nd ‘𝑟) ∈ V) ∧ ((1st ‘𝑧)(𝑀 ∘ 𝑉)(2nd ‘𝑟) ∧ (2nd ‘𝑟)𝑉(2nd ‘𝑧))) → (1st ‘𝑧)(𝑉 ∘ (𝑀 ∘ 𝑉))(2nd ‘𝑧))
70	69	ex 417	. . . . . . . . . 10 ⊢ (((1st ‘𝑧) ∈ V ∧ (2nd ‘𝑧) ∈ V ∧ (2nd ‘𝑟) ∈ V) → (((1st ‘𝑧)(𝑀 ∘ 𝑉)(2nd ‘𝑟) ∧ (2nd ‘𝑟)𝑉(2nd ‘𝑧)) → (1st ‘𝑧)(𝑉 ∘ (𝑀 ∘ 𝑉))(2nd ‘𝑧)))
71	64, 59, 58, 70	mp3an 1487	. . . . . . . . 9 ⊢ (((1st ‘𝑧)(𝑀 ∘ 𝑉)(2nd ‘𝑟) ∧ (2nd ‘𝑟)𝑉(2nd ‘𝑧)) → (1st ‘𝑧)(𝑉 ∘ (𝑀 ∘ 𝑉))(2nd ‘𝑧))
72	68, 71	sylan 591	. . . . . . . 8 ⊢ ((((1st ‘𝑧)𝑉(1st ‘𝑟) ∧ (1st ‘𝑟)𝑀(2nd ‘𝑟)) ∧ (2nd ‘𝑟)𝑉(2nd ‘𝑧)) → (1st ‘𝑧)(𝑉 ∘ (𝑀 ∘ 𝑉))(2nd ‘𝑧))
73	41, 49, 63, 72	syl21anc 850	. . . . . . 7 ⊢ (((((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑀 ⊆ (𝑋 × 𝑋)) ∧ (𝑉 ∈ 𝑈 ∧ ◡𝑉 = 𝑉)) ∧ 𝑧 ∈ ((cls‘(𝐽 ×t 𝐽))‘𝑀)) ∧ 𝑟 ∈ (((𝑉 “ {(1st ‘𝑧)}) × (𝑉 “ {(2nd ‘𝑧)})) ∩ 𝑀)) → (1st ‘𝑧)(𝑉 ∘ (𝑀 ∘ 𝑉))(2nd ‘𝑧))
74	73	ralrimiva 3163	. . . . . 6 ⊢ ((((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑀 ⊆ (𝑋 × 𝑋)) ∧ (𝑉 ∈ 𝑈 ∧ ◡𝑉 = 𝑉)) ∧ 𝑧 ∈ ((cls‘(𝐽 ×t 𝐽))‘𝑀)) → ∀𝑟 ∈ (((𝑉 “ {(1st ‘𝑧)}) × (𝑉 “ {(2nd ‘𝑧)})) ∩ 𝑀)(1st ‘𝑧)(𝑉 ∘ (𝑀 ∘ 𝑉))(2nd ‘𝑧))
75		simplll 786	. . . . . . . . 9 ⊢ ((((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑀 ⊆ (𝑋 × 𝑋)) ∧ (𝑉 ∈ 𝑈 ∧ ◡𝑉 = 𝑉)) ∧ 𝑧 ∈ ((cls‘(𝐽 ×t 𝐽))‘𝑀)) → 𝑈 ∈ (UnifOn‘𝑋))
76		simplrl 788	. . . . . . . . 9 ⊢ ((((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑀 ⊆ (𝑋 × 𝑋)) ∧ (𝑉 ∈ 𝑈 ∧ ◡𝑉 = 𝑉)) ∧ 𝑧 ∈ ((cls‘(𝐽 ×t 𝐽))‘𝑀)) → 𝑉 ∈ 𝑈)
77	4	3ad2ant1 1149	. . . . . . . . . . 11 ⊢ ((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑉 ∈ 𝑈 ∧ 𝑧 ∈ (𝑋 × 𝑋)) → 𝐽 ∈ Top)
78		xp1st 8014	. . . . . . . . . . . 12 ⊢ (𝑧 ∈ (𝑋 × 𝑋) → (1st ‘𝑧) ∈ 𝑋)
79	2	utopsnnei 24371	. . . . . . . . . . . 12 ⊢ ((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑉 ∈ 𝑈 ∧ (1st ‘𝑧) ∈ 𝑋) → (𝑉 “ {(1st ‘𝑧)}) ∈ ((nei‘𝐽)‘{(1st ‘𝑧)}))
80	78, 79	syl3an3 1181	. . . . . . . . . . 11 ⊢ ((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑉 ∈ 𝑈 ∧ 𝑧 ∈ (𝑋 × 𝑋)) → (𝑉 “ {(1st ‘𝑧)}) ∈ ((nei‘𝐽)‘{(1st ‘𝑧)}))
81		xp2nd 8015	. . . . . . . . . . . 12 ⊢ (𝑧 ∈ (𝑋 × 𝑋) → (2nd ‘𝑧) ∈ 𝑋)
82	2	utopsnnei 24371	. . . . . . . . . . . 12 ⊢ ((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑉 ∈ 𝑈 ∧ (2nd ‘𝑧) ∈ 𝑋) → (𝑉 “ {(2nd ‘𝑧)}) ∈ ((nei‘𝐽)‘{(2nd ‘𝑧)}))
83	81, 82	syl3an3 1181	. . . . . . . . . . 11 ⊢ ((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑉 ∈ 𝑈 ∧ 𝑧 ∈ (𝑋 × 𝑋)) → (𝑉 “ {(2nd ‘𝑧)}) ∈ ((nei‘𝐽)‘{(2nd ‘𝑧)}))
84	14, 14	neitx 23729	. . . . . . . . . . 11 ⊢ (((𝐽 ∈ Top ∧ 𝐽 ∈ Top) ∧ ((𝑉 “ {(1st ‘𝑧)}) ∈ ((nei‘𝐽)‘{(1st ‘𝑧)}) ∧ (𝑉 “ {(2nd ‘𝑧)}) ∈ ((nei‘𝐽)‘{(2nd ‘𝑧)}))) → ((𝑉 “ {(1st ‘𝑧)}) × (𝑉 “ {(2nd ‘𝑧)})) ∈ ((nei‘(𝐽 ×t 𝐽))‘({(1st ‘𝑧)} × {(2nd ‘𝑧)})))
85	77, 77, 80, 83, 84	syl22anc 851	. . . . . . . . . 10 ⊢ ((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑉 ∈ 𝑈 ∧ 𝑧 ∈ (𝑋 × 𝑋)) → ((𝑉 “ {(1st ‘𝑧)}) × (𝑉 “ {(2nd ‘𝑧)})) ∈ ((nei‘(𝐽 ×t 𝐽))‘({(1st ‘𝑧)} × {(2nd ‘𝑧)})))
86		1st2nd2 8021	. . . . . . . . . . . . . 14 ⊢ (𝑧 ∈ (𝑋 × 𝑋) → 𝑧 = ⟨(1st ‘𝑧), (2nd ‘𝑧)⟩)
87	86	sneqd 4603	. . . . . . . . . . . . 13 ⊢ (𝑧 ∈ (𝑋 × 𝑋) → {𝑧} = {⟨(1st ‘𝑧), (2nd ‘𝑧)⟩})
88	64, 59	xpsn 7135	. . . . . . . . . . . . 13 ⊢ ({(1st ‘𝑧)} × {(2nd ‘𝑧)}) = {⟨(1st ‘𝑧), (2nd ‘𝑧)⟩}
89	87, 88	eqtr4di 2822	. . . . . . . . . . . 12 ⊢ (𝑧 ∈ (𝑋 × 𝑋) → {𝑧} = ({(1st ‘𝑧)} × {(2nd ‘𝑧)}))
90	89	fveq2d 6883	. . . . . . . . . . 11 ⊢ (𝑧 ∈ (𝑋 × 𝑋) → ((nei‘(𝐽 ×t 𝐽))‘{𝑧}) = ((nei‘(𝐽 ×t 𝐽))‘({(1st ‘𝑧)} × {(2nd ‘𝑧)})))
91	90	3ad2ant3 1151	. . . . . . . . . 10 ⊢ ((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑉 ∈ 𝑈 ∧ 𝑧 ∈ (𝑋 × 𝑋)) → ((nei‘(𝐽 ×t 𝐽))‘{𝑧}) = ((nei‘(𝐽 ×t 𝐽))‘({(1st ‘𝑧)} × {(2nd ‘𝑧)})))
92	85, 91	eleqtrrd 2872	. . . . . . . . 9 ⊢ ((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑉 ∈ 𝑈 ∧ 𝑧 ∈ (𝑋 × 𝑋)) → ((𝑉 “ {(1st ‘𝑧)}) × (𝑉 “ {(2nd ‘𝑧)})) ∈ ((nei‘(𝐽 ×t 𝐽))‘{𝑧}))
93	75, 76, 25, 92	syl3anc 1396	. . . . . . . 8 ⊢ ((((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑀 ⊆ (𝑋 × 𝑋)) ∧ (𝑉 ∈ 𝑈 ∧ ◡𝑉 = 𝑉)) ∧ 𝑧 ∈ ((cls‘(𝐽 ×t 𝐽))‘𝑀)) → ((𝑉 “ {(1st ‘𝑧)}) × (𝑉 “ {(2nd ‘𝑧)})) ∈ ((nei‘(𝐽 ×t 𝐽))‘{𝑧}))
94	20	neindisj 23239	. . . . . . . 8 ⊢ ((((𝐽 ×t 𝐽) ∈ Top ∧ 𝑀 ⊆ ∪ (𝐽 ×t 𝐽)) ∧ (𝑧 ∈ ((cls‘(𝐽 ×t 𝐽))‘𝑀) ∧ ((𝑉 “ {(1st ‘𝑧)}) × (𝑉 “ {(2nd ‘𝑧)})) ∈ ((nei‘(𝐽 ×t 𝐽))‘{𝑧}))) → (((𝑉 “ {(1st ‘𝑧)}) × (𝑉 “ {(2nd ‘𝑧)})) ∩ 𝑀) ≠ ∅)
95	7, 19, 24, 93, 94	syl22anc 851	. . . . . . 7 ⊢ ((((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑀 ⊆ (𝑋 × 𝑋)) ∧ (𝑉 ∈ 𝑈 ∧ ◡𝑉 = 𝑉)) ∧ 𝑧 ∈ ((cls‘(𝐽 ×t 𝐽))‘𝑀)) → (((𝑉 “ {(1st ‘𝑧)}) × (𝑉 “ {(2nd ‘𝑧)})) ∩ 𝑀) ≠ ∅)
96		r19.3rzv 4466	. . . . . . 7 ⊢ ((((𝑉 “ {(1st ‘𝑧)}) × (𝑉 “ {(2nd ‘𝑧)})) ∩ 𝑀) ≠ ∅ → ((1st ‘𝑧)(𝑉 ∘ (𝑀 ∘ 𝑉))(2nd ‘𝑧) ↔ ∀𝑟 ∈ (((𝑉 “ {(1st ‘𝑧)}) × (𝑉 “ {(2nd ‘𝑧)})) ∩ 𝑀)(1st ‘𝑧)(𝑉 ∘ (𝑀 ∘ 𝑉))(2nd ‘𝑧)))
97	95, 96	syl 18	. . . . . 6 ⊢ ((((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑀 ⊆ (𝑋 × 𝑋)) ∧ (𝑉 ∈ 𝑈 ∧ ◡𝑉 = 𝑉)) ∧ 𝑧 ∈ ((cls‘(𝐽 ×t 𝐽))‘𝑀)) → ((1st ‘𝑧)(𝑉 ∘ (𝑀 ∘ 𝑉))(2nd ‘𝑧) ↔ ∀𝑟 ∈ (((𝑉 “ {(1st ‘𝑧)}) × (𝑉 “ {(2nd ‘𝑧)})) ∩ 𝑀)(1st ‘𝑧)(𝑉 ∘ (𝑀 ∘ 𝑉))(2nd ‘𝑧)))
98	74, 97	mpbird 260	. . . . 5 ⊢ ((((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑀 ⊆ (𝑋 × 𝑋)) ∧ (𝑉 ∈ 𝑈 ∧ ◡𝑉 = 𝑉)) ∧ 𝑧 ∈ ((cls‘(𝐽 ×t 𝐽))‘𝑀)) → (1st ‘𝑧)(𝑉 ∘ (𝑀 ∘ 𝑉))(2nd ‘𝑧))
99		df-br 5111	. . . . 5 ⊢ ((1st ‘𝑧)(𝑉 ∘ (𝑀 ∘ 𝑉))(2nd ‘𝑧) ↔ ⟨(1st ‘𝑧), (2nd ‘𝑧)⟩ ∈ (𝑉 ∘ (𝑀 ∘ 𝑉)))
100	98, 99	sylib 221	. . . 4 ⊢ ((((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑀 ⊆ (𝑋 × 𝑋)) ∧ (𝑉 ∈ 𝑈 ∧ ◡𝑉 = 𝑉)) ∧ 𝑧 ∈ ((cls‘(𝐽 ×t 𝐽))‘𝑀)) → ⟨(1st ‘𝑧), (2nd ‘𝑧)⟩ ∈ (𝑉 ∘ (𝑀 ∘ 𝑉)))
101	27, 100	eqeltrd 2869	. . 3 ⊢ ((((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑀 ⊆ (𝑋 × 𝑋)) ∧ (𝑉 ∈ 𝑈 ∧ ◡𝑉 = 𝑉)) ∧ 𝑧 ∈ ((cls‘(𝐽 ×t 𝐽))‘𝑀)) → 𝑧 ∈ (𝑉 ∘ (𝑀 ∘ 𝑉)))
102	101	ex 417	. 2 ⊢ (((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑀 ⊆ (𝑋 × 𝑋)) ∧ (𝑉 ∈ 𝑈 ∧ ◡𝑉 = 𝑉)) → (𝑧 ∈ ((cls‘(𝐽 ×t 𝐽))‘𝑀) → 𝑧 ∈ (𝑉 ∘ (𝑀 ∘ 𝑉))))
103	102	ssrdv 3951	1 ⊢ (((𝑈 ∈ (UnifOn‘𝑋) ∧ 𝑀 ⊆ (𝑋 × 𝑋)) ∧ (𝑉 ∈ 𝑈 ∧ ◡𝑉 = 𝑉)) → ((cls‘(𝐽 ×t 𝐽))‘𝑀) ⊆ (𝑉 ∘ (𝑀 ∘ 𝑉)))

Syntax hints:   → wi 4   ↔ wb 209   ∧ wa 400   ∧ w3a 1101   = wceq 1567   ∈ wcel 2149   ≠ wne 2964  ∀wral 3085  Vcvv 3463   ∩ cin 3912   ⊆ wss 3913  ∅c0 4294  {csn 4591  ⟨cop 4597  ∪ cuni 4873   class class class wbr 5110   × cxp 5657  ^◡ccnv 5658   “ cima 5662   ∘ ccom 5663  Rel wrel 5664  ‘cfv 6533  (class class class)co 7408  1^st c1st 7980  2^nd c2nd 7981  Topctop 23015  TopOnctopon 23032  clsccl 23140  neicnei 23219   ×_t ctx 23682  UnifOncust 24322  unifTopcutop 24352

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1822  ax-4 1836  ax-5 1937  ax-6 1994  ax-7 2035  ax-8 2151  ax-9 2159  ax-10 2182  ax-11 2198  ax-12 2219  ax-ext 2741  ax-rep 5239  ax-sep 5258  ax-nul 5268  ax-pow 5334  ax-pr 5402  ax-un 7730

This theorem depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3or 1102  df-3an 1103  df-tru 1570  df-fal 1580  df-ex 1807  df-nf 1811  df-sb 2098  df-mo 2573  df-eu 2603  df-clab 2748  df-cleq 2761  df-clel 2844  df-nfc 2918  df-ne 2965  df-ral 3086  df-rex 3096  df-reu 3377  df-rab 3424  df-v 3465  df-sbc 3754  df-csb 3862  df-dif 3916  df-un 3918  df-in 3920  df-ss 3930  df-pss 3933  df-nul 4295  df-if 4490  df-pw 4566  df-sn 4592  df-pr 4594  df-op 4598  df-uni 4874  df-int 4914  df-iun 4959  df-iin 4960  df-br 5111  df-opab 5175  df-mpt 5194  df-tr 5220  df-id 5554  df-eprel 5559  df-po 5567  df-so 5568  df-fr 5612  df-we 5614  df-xp 5665  df-rel 5666  df-cnv 5667  df-co 5668  df-dm 5669  df-rn 5670  df-res 5671  df-ima 5672  df-ord 6360  df-on 6361  df-lim 6362  df-suc 6363  df-iota 6489  df-fun 6535  df-fn 6536  df-f 6537  df-f1 6538  df-fo 6539  df-f1o 6540  df-fv 6541  df-ov 7411  df-oprab 7412  df-mpo 7413  df-om 7859  df-1st 7982  df-2nd 7983  df-1o 8449  df-2o 8450  df-en 8940  df-fin 8943  df-fi 9367  df-topgen 17492  df-top 23016  df-topon 23033  df-bases 23068  df-cld 23141  df-ntr 23142  df-cls 23143  df-nei 23220  df-tx 23684  df-ust 24323  df-utop 24353

This theorem is referenced by:  utopreg  24374