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Theorem basqtop 23897

Description: An injection maps bases to bases. (Contributed by Mario Carneiro, 27-Aug-2015.)

**Hypothesis**
Ref	Expression
qtopcmp.1	⊢ 𝑋 = ∪ 𝐽

**Assertion**
Ref	Expression
basqtop	⊢ ((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) → (𝐽 qTop 𝐹) ∈ TopBases)

Proof of Theorem basqtop Dummy variables 𝑥 𝑤 𝑦 𝑧 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		f1ofo 6832	. . . . 5 ⊢ (𝐹:𝑋–1-1-onto→𝑌 → 𝐹:𝑋–onto→𝑌)
2		qtopcmp.1	. . . . . . 7 ⊢ 𝑋 = ∪ 𝐽
3	2	elqtop2 23887	. . . . . 6 ⊢ ((𝐽 ∈ TopBases ∧ 𝐹:𝑋–onto→𝑌) → (𝑥 ∈ (𝐽 qTop 𝐹) ↔ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽)))
4	2	elqtop2 23887	. . . . . 6 ⊢ ((𝐽 ∈ TopBases ∧ 𝐹:𝑋–onto→𝑌) → (𝑦 ∈ (𝐽 qTop 𝐹) ↔ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)))
5	3, 4	anbi12d 644	. . . . 5 ⊢ ((𝐽 ∈ TopBases ∧ 𝐹:𝑋–onto→𝑌) → ((𝑥 ∈ (𝐽 qTop 𝐹) ∧ 𝑦 ∈ (𝐽 qTop 𝐹)) ↔ ((𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽))))
6	1, 5	sylan2 605	. . . 4 ⊢ ((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) → ((𝑥 ∈ (𝐽 qTop 𝐹) ∧ 𝑦 ∈ (𝐽 qTop 𝐹)) ↔ ((𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽))))
7		simpl1l 1243	. . . . . . . . 9 ⊢ ((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) → 𝐽 ∈ TopBases)
8		simpl2r 1246	. . . . . . . . 9 ⊢ ((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) → (^◡𝐹 “ 𝑥) ∈ 𝐽)
9		simpl3r 1248	. . . . . . . . 9 ⊢ ((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) → (^◡𝐹 “ 𝑦) ∈ 𝐽)
10		simpl1r 1244	. . . . . . . . . . . 12 ⊢ ((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) → 𝐹:𝑋–1-1-onto→𝑌)
11		f1ocnv 6837	. . . . . . . . . . . 12 ⊢ (𝐹:𝑋–1-1-onto→𝑌 → ^◡𝐹:𝑌–1-1-onto→𝑋)
12		f1ofn 6825	. . . . . . . . . . . 12 ⊢ (^◡𝐹:𝑌–1-1-onto→𝑋 → ^◡𝐹 Fn 𝑌)
13	10, 11, 12	3syl 19	. . . . . . . . . . 11 ⊢ ((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) → ^◡𝐹 Fn 𝑌)
14		simpl2l 1245	. . . . . . . . . . 11 ⊢ ((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) → 𝑥 ⊆ 𝑌)
15		simpr 490	. . . . . . . . . . . 12 ⊢ ((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) → 𝑧 ∈ (𝑥 ∩ 𝑦))
16	15	elin1d 4157	. . . . . . . . . . 11 ⊢ ((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) → 𝑧 ∈ 𝑥)
17		fnfvima 7235	. . . . . . . . . . 11 ⊢ ((^◡𝐹 Fn 𝑌 ∧ 𝑥 ⊆ 𝑌 ∧ 𝑧 ∈ 𝑥) → (^◡𝐹‘𝑧) ∈ (^◡𝐹 “ 𝑥))
18	13, 14, 16, 17	syl3anc 1398	. . . . . . . . . 10 ⊢ ((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) → (^◡𝐹‘𝑧) ∈ (^◡𝐹 “ 𝑥))
19		simpl3l 1247	. . . . . . . . . . 11 ⊢ ((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) → 𝑦 ⊆ 𝑌)
20	15	elin2d 4158	. . . . . . . . . . 11 ⊢ ((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) → 𝑧 ∈ 𝑦)
21		fnfvima 7235	. . . . . . . . . . 11 ⊢ ((^◡𝐹 Fn 𝑌 ∧ 𝑦 ⊆ 𝑌 ∧ 𝑧 ∈ 𝑦) → (^◡𝐹‘𝑧) ∈ (^◡𝐹 “ 𝑦))
22	13, 19, 20, 21	syl3anc 1398	. . . . . . . . . 10 ⊢ ((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) → (^◡𝐹‘𝑧) ∈ (^◡𝐹 “ 𝑦))
23	18, 22	elind 4153	. . . . . . . . 9 ⊢ ((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) → (^◡𝐹‘𝑧) ∈ ((^◡𝐹 “ 𝑥) ∩ (^◡𝐹 “ 𝑦)))
24		basis2 23137	. . . . . . . . 9 ⊢ (((𝐽 ∈ TopBases ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ ((^◡𝐹 “ 𝑦) ∈ 𝐽 ∧ (^◡𝐹‘𝑧) ∈ ((^◡𝐹 “ 𝑥) ∩ (^◡𝐹 “ 𝑦)))) → ∃𝑤 ∈ 𝐽 ((^◡𝐹‘𝑧) ∈ 𝑤 ∧ 𝑤 ⊆ ((^◡𝐹 “ 𝑥) ∩ (^◡𝐹 “ 𝑦))))
25	7, 8, 9, 23, 24	syl22anc 852	. . . . . . . 8 ⊢ ((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) → ∃𝑤 ∈ 𝐽 ((^◡𝐹‘𝑧) ∈ 𝑤 ∧ 𝑤 ⊆ ((^◡𝐹 “ 𝑥) ∩ (^◡𝐹 “ 𝑦))))
26	10	adantr 486	. . . . . . . . . . 11 ⊢ (((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) ∧ (𝑤 ∈ 𝐽 ∧ ((^◡𝐹‘𝑧) ∈ 𝑤 ∧ 𝑤 ⊆ ((^◡𝐹 “ 𝑥) ∩ (^◡𝐹 “ 𝑦))))) → 𝐹:𝑋–1-1-onto→𝑌)
27		inss1 4189	. . . . . . . . . . . . . 14 ⊢ (𝑥 ∩ 𝑦) ⊆ 𝑥
28		simp2l 1218	. . . . . . . . . . . . . 14 ⊢ (((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) → 𝑥 ⊆ 𝑌)
29	27, 28	sstrid 3949	. . . . . . . . . . . . 13 ⊢ (((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) → (𝑥 ∩ 𝑦) ⊆ 𝑌)
30	29	sselda 3938	. . . . . . . . . . . 12 ⊢ ((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) → 𝑧 ∈ 𝑌)
31	30	adantr 486	. . . . . . . . . . 11 ⊢ (((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) ∧ (𝑤 ∈ 𝐽 ∧ ((^◡𝐹‘𝑧) ∈ 𝑤 ∧ 𝑤 ⊆ ((^◡𝐹 “ 𝑥) ∩ (^◡𝐹 “ 𝑦))))) → 𝑧 ∈ 𝑌)
32		f1ocnvfv2 7281	. . . . . . . . . . 11 ⊢ ((𝐹:𝑋–1-1-onto→𝑌 ∧ 𝑧 ∈ 𝑌) → (𝐹‘(^◡𝐹‘𝑧)) = 𝑧)
33	26, 31, 32	syl2anc 596	. . . . . . . . . 10 ⊢ (((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) ∧ (𝑤 ∈ 𝐽 ∧ ((^◡𝐹‘𝑧) ∈ 𝑤 ∧ 𝑤 ⊆ ((^◡𝐹 “ 𝑥) ∩ (^◡𝐹 “ 𝑦))))) → (𝐹‘(^◡𝐹‘𝑧)) = 𝑧)
34		f1ofn 6825	. . . . . . . . . . . 12 ⊢ (𝐹:𝑋–1-1-onto→𝑌 → 𝐹 Fn 𝑋)
35	26, 34	syl 18	. . . . . . . . . . 11 ⊢ (((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) ∧ (𝑤 ∈ 𝐽 ∧ ((^◡𝐹‘𝑧) ∈ 𝑤 ∧ 𝑤 ⊆ ((^◡𝐹 “ 𝑥) ∩ (^◡𝐹 “ 𝑦))))) → 𝐹 Fn 𝑋)
36		simprrr 794	. . . . . . . . . . . . 13 ⊢ (((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) ∧ (𝑤 ∈ 𝐽 ∧ ((^◡𝐹‘𝑧) ∈ 𝑤 ∧ 𝑤 ⊆ ((^◡𝐹 “ 𝑥) ∩ (^◡𝐹 “ 𝑦))))) → 𝑤 ⊆ ((^◡𝐹 “ 𝑥) ∩ (^◡𝐹 “ 𝑦)))
37		inss1 4189	. . . . . . . . . . . . 13 ⊢ ((^◡𝐹 “ 𝑥) ∩ (^◡𝐹 “ 𝑦)) ⊆ (^◡𝐹 “ 𝑥)
38	36, 37	sstrdi 3950	. . . . . . . . . . . 12 ⊢ (((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) ∧ (𝑤 ∈ 𝐽 ∧ ((^◡𝐹‘𝑧) ∈ 𝑤 ∧ 𝑤 ⊆ ((^◡𝐹 “ 𝑥) ∩ (^◡𝐹 “ 𝑦))))) → 𝑤 ⊆ (^◡𝐹 “ 𝑥))
39		cnvimass 6086	. . . . . . . . . . . . 13 ⊢ (^◡𝐹 “ 𝑥) ⊆ dom 𝐹
40		f1odm 6828	. . . . . . . . . . . . . 14 ⊢ (𝐹:𝑋–1-1-onto→𝑌 → dom 𝐹 = 𝑋)
41	26, 40	syl 18	. . . . . . . . . . . . 13 ⊢ (((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) ∧ (𝑤 ∈ 𝐽 ∧ ((^◡𝐹‘𝑧) ∈ 𝑤 ∧ 𝑤 ⊆ ((^◡𝐹 “ 𝑥) ∩ (^◡𝐹 “ 𝑦))))) → dom 𝐹 = 𝑋)
42	39, 41	sseqtrid 3980	. . . . . . . . . . . 12 ⊢ (((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) ∧ (𝑤 ∈ 𝐽 ∧ ((^◡𝐹‘𝑧) ∈ 𝑤 ∧ 𝑤 ⊆ ((^◡𝐹 “ 𝑥) ∩ (^◡𝐹 “ 𝑦))))) → (^◡𝐹 “ 𝑥) ⊆ 𝑋)
43	38, 42	sstrd 3948	. . . . . . . . . . 11 ⊢ (((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) ∧ (𝑤 ∈ 𝐽 ∧ ((^◡𝐹‘𝑧) ∈ 𝑤 ∧ 𝑤 ⊆ ((^◡𝐹 “ 𝑥) ∩ (^◡𝐹 “ 𝑦))))) → 𝑤 ⊆ 𝑋)
44		simprrl 793	. . . . . . . . . . 11 ⊢ (((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) ∧ (𝑤 ∈ 𝐽 ∧ ((^◡𝐹‘𝑧) ∈ 𝑤 ∧ 𝑤 ⊆ ((^◡𝐹 “ 𝑥) ∩ (^◡𝐹 “ 𝑦))))) → (^◡𝐹‘𝑧) ∈ 𝑤)
45		fnfvima 7235	. . . . . . . . . . 11 ⊢ ((𝐹 Fn 𝑋 ∧ 𝑤 ⊆ 𝑋 ∧ (^◡𝐹‘𝑧) ∈ 𝑤) → (𝐹‘(^◡𝐹‘𝑧)) ∈ (𝐹 “ 𝑤))
46	35, 43, 44, 45	syl3anc 1398	. . . . . . . . . 10 ⊢ (((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) ∧ (𝑤 ∈ 𝐽 ∧ ((^◡𝐹‘𝑧) ∈ 𝑤 ∧ 𝑤 ⊆ ((^◡𝐹 “ 𝑥) ∩ (^◡𝐹 “ 𝑦))))) → (𝐹‘(^◡𝐹‘𝑧)) ∈ (𝐹 “ 𝑤))
47	33, 46	eqeltrrd 2866	. . . . . . . . 9 ⊢ (((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) ∧ (𝑤 ∈ 𝐽 ∧ ((^◡𝐹‘𝑧) ∈ 𝑤 ∧ 𝑤 ⊆ ((^◡𝐹 “ 𝑥) ∩ (^◡𝐹 “ 𝑦))))) → 𝑧 ∈ (𝐹 “ 𝑤))
48		imassrn 6075	. . . . . . . . . . . 12 ⊢ (𝐹 “ 𝑤) ⊆ ran 𝐹
49	26, 1	syl 18	. . . . . . . . . . . . 13 ⊢ (((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) ∧ (𝑤 ∈ 𝐽 ∧ ((^◡𝐹‘𝑧) ∈ 𝑤 ∧ 𝑤 ⊆ ((^◡𝐹 “ 𝑥) ∩ (^◡𝐹 “ 𝑦))))) → 𝐹:𝑋–onto→𝑌)
50		forn 6799	. . . . . . . . . . . . 13 ⊢ (𝐹:𝑋–onto→𝑌 → ran 𝐹 = 𝑌)
51	49, 50	syl 18	. . . . . . . . . . . 12 ⊢ (((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) ∧ (𝑤 ∈ 𝐽 ∧ ((^◡𝐹‘𝑧) ∈ 𝑤 ∧ 𝑤 ⊆ ((^◡𝐹 “ 𝑥) ∩ (^◡𝐹 “ 𝑦))))) → ran 𝐹 = 𝑌)
52	48, 51	sseqtrid 3980	. . . . . . . . . . 11 ⊢ (((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) ∧ (𝑤 ∈ 𝐽 ∧ ((^◡𝐹‘𝑧) ∈ 𝑤 ∧ 𝑤 ⊆ ((^◡𝐹 “ 𝑥) ∩ (^◡𝐹 “ 𝑦))))) → (𝐹 “ 𝑤) ⊆ 𝑌)
53		f1of1 6823	. . . . . . . . . . . . . 14 ⊢ (𝐹:𝑋–1-1-onto→𝑌 → 𝐹:𝑋–1-1→𝑌)
54	26, 53	syl 18	. . . . . . . . . . . . 13 ⊢ (((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) ∧ (𝑤 ∈ 𝐽 ∧ ((^◡𝐹‘𝑧) ∈ 𝑤 ∧ 𝑤 ⊆ ((^◡𝐹 “ 𝑥) ∩ (^◡𝐹 “ 𝑦))))) → 𝐹:𝑋–1-1→𝑌)
55		f1imacnv 6841	. . . . . . . . . . . . 13 ⊢ ((𝐹:𝑋–1-1→𝑌 ∧ 𝑤 ⊆ 𝑋) → (^◡𝐹 “ (𝐹 “ 𝑤)) = 𝑤)
56	54, 43, 55	syl2anc 596	. . . . . . . . . . . 12 ⊢ (((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) ∧ (𝑤 ∈ 𝐽 ∧ ((^◡𝐹‘𝑧) ∈ 𝑤 ∧ 𝑤 ⊆ ((^◡𝐹 “ 𝑥) ∩ (^◡𝐹 “ 𝑦))))) → (^◡𝐹 “ (𝐹 “ 𝑤)) = 𝑤)
57		simprl 783	. . . . . . . . . . . 12 ⊢ (((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) ∧ (𝑤 ∈ 𝐽 ∧ ((^◡𝐹‘𝑧) ∈ 𝑤 ∧ 𝑤 ⊆ ((^◡𝐹 “ 𝑥) ∩ (^◡𝐹 “ 𝑦))))) → 𝑤 ∈ 𝐽)
58	56, 57	eqeltrd 2865	. . . . . . . . . . 11 ⊢ (((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) ∧ (𝑤 ∈ 𝐽 ∧ ((^◡𝐹‘𝑧) ∈ 𝑤 ∧ 𝑤 ⊆ ((^◡𝐹 “ 𝑥) ∩ (^◡𝐹 “ 𝑦))))) → (^◡𝐹 “ (𝐹 “ 𝑤)) ∈ 𝐽)
59	7	adantr 486	. . . . . . . . . . . 12 ⊢ (((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) ∧ (𝑤 ∈ 𝐽 ∧ ((^◡𝐹‘𝑧) ∈ 𝑤 ∧ 𝑤 ⊆ ((^◡𝐹 “ 𝑥) ∩ (^◡𝐹 “ 𝑦))))) → 𝐽 ∈ TopBases)
60	2	elqtop2 23887	. . . . . . . . . . . 12 ⊢ ((𝐽 ∈ TopBases ∧ 𝐹:𝑋–onto→𝑌) → ((𝐹 “ 𝑤) ∈ (𝐽 qTop 𝐹) ↔ ((𝐹 “ 𝑤) ⊆ 𝑌 ∧ (^◡𝐹 “ (𝐹 “ 𝑤)) ∈ 𝐽)))
61	59, 49, 60	syl2anc 596	. . . . . . . . . . 11 ⊢ (((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) ∧ (𝑤 ∈ 𝐽 ∧ ((^◡𝐹‘𝑧) ∈ 𝑤 ∧ 𝑤 ⊆ ((^◡𝐹 “ 𝑥) ∩ (^◡𝐹 “ 𝑦))))) → ((𝐹 “ 𝑤) ∈ (𝐽 qTop 𝐹) ↔ ((𝐹 “ 𝑤) ⊆ 𝑌 ∧ (^◡𝐹 “ (𝐹 “ 𝑤)) ∈ 𝐽)))
62	52, 58, 61	mpbir2and 726	. . . . . . . . . 10 ⊢ (((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) ∧ (𝑤 ∈ 𝐽 ∧ ((^◡𝐹‘𝑧) ∈ 𝑤 ∧ 𝑤 ⊆ ((^◡𝐹 “ 𝑥) ∩ (^◡𝐹 “ 𝑦))))) → (𝐹 “ 𝑤) ∈ (𝐽 qTop 𝐹))
63		fnfun 6639	. . . . . . . . . . . . . 14 ⊢ (𝐹 Fn 𝑋 → Fun 𝐹)
64		inpreima 7063	. . . . . . . . . . . . . 14 ⊢ (Fun 𝐹 → (^◡𝐹 “ (𝑥 ∩ 𝑦)) = ((^◡𝐹 “ 𝑥) ∩ (^◡𝐹 “ 𝑦)))
65	35, 63, 64	3syl 19	. . . . . . . . . . . . 13 ⊢ (((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) ∧ (𝑤 ∈ 𝐽 ∧ ((^◡𝐹‘𝑧) ∈ 𝑤 ∧ 𝑤 ⊆ ((^◡𝐹 “ 𝑥) ∩ (^◡𝐹 “ 𝑦))))) → (^◡𝐹 “ (𝑥 ∩ 𝑦)) = ((^◡𝐹 “ 𝑥) ∩ (^◡𝐹 “ 𝑦)))
66	36, 65	sseqtrrd 3975	. . . . . . . . . . . 12 ⊢ (((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) ∧ (𝑤 ∈ 𝐽 ∧ ((^◡𝐹‘𝑧) ∈ 𝑤 ∧ 𝑤 ⊆ ((^◡𝐹 “ 𝑥) ∩ (^◡𝐹 “ 𝑦))))) → 𝑤 ⊆ (^◡𝐹 “ (𝑥 ∩ 𝑦)))
67	35, 63	syl 18	. . . . . . . . . . . . 13 ⊢ (((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) ∧ (𝑤 ∈ 𝐽 ∧ ((^◡𝐹‘𝑧) ∈ 𝑤 ∧ 𝑤 ⊆ ((^◡𝐹 “ 𝑥) ∩ (^◡𝐹 “ 𝑦))))) → Fun 𝐹)
68	38, 39	sstrdi 3950	. . . . . . . . . . . . 13 ⊢ (((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) ∧ (𝑤 ∈ 𝐽 ∧ ((^◡𝐹‘𝑧) ∈ 𝑤 ∧ 𝑤 ⊆ ((^◡𝐹 “ 𝑥) ∩ (^◡𝐹 “ 𝑦))))) → 𝑤 ⊆ dom 𝐹)
69		funimass3 7053	. . . . . . . . . . . . 13 ⊢ ((Fun 𝐹 ∧ 𝑤 ⊆ dom 𝐹) → ((𝐹 “ 𝑤) ⊆ (𝑥 ∩ 𝑦) ↔ 𝑤 ⊆ (^◡𝐹 “ (𝑥 ∩ 𝑦))))
70	67, 68, 69	syl2anc 596	. . . . . . . . . . . 12 ⊢ (((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) ∧ (𝑤 ∈ 𝐽 ∧ ((^◡𝐹‘𝑧) ∈ 𝑤 ∧ 𝑤 ⊆ ((^◡𝐹 “ 𝑥) ∩ (^◡𝐹 “ 𝑦))))) → ((𝐹 “ 𝑤) ⊆ (𝑥 ∩ 𝑦) ↔ 𝑤 ⊆ (^◡𝐹 “ (𝑥 ∩ 𝑦))))
71	66, 70	mpbird 260	. . . . . . . . . . 11 ⊢ (((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) ∧ (𝑤 ∈ 𝐽 ∧ ((^◡𝐹‘𝑧) ∈ 𝑤 ∧ 𝑤 ⊆ ((^◡𝐹 “ 𝑥) ∩ (^◡𝐹 “ 𝑦))))) → (𝐹 “ 𝑤) ⊆ (𝑥 ∩ 𝑦))
72		vex 3461	. . . . . . . . . . . . 13 ⊢ 𝑥 ∈ V
73	72	inex1 5288	. . . . . . . . . . . 12 ⊢ (𝑥 ∩ 𝑦) ∈ V
74	73	elpw2 5307	. . . . . . . . . . 11 ⊢ ((𝐹 “ 𝑤) ∈ 𝒫 (𝑥 ∩ 𝑦) ↔ (𝐹 “ 𝑤) ⊆ (𝑥 ∩ 𝑦))
75	71, 74	sylibr 237	. . . . . . . . . 10 ⊢ (((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) ∧ (𝑤 ∈ 𝐽 ∧ ((^◡𝐹‘𝑧) ∈ 𝑤 ∧ 𝑤 ⊆ ((^◡𝐹 “ 𝑥) ∩ (^◡𝐹 “ 𝑦))))) → (𝐹 “ 𝑤) ∈ 𝒫 (𝑥 ∩ 𝑦))
76	62, 75	elind 4153	. . . . . . . . 9 ⊢ (((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) ∧ (𝑤 ∈ 𝐽 ∧ ((^◡𝐹‘𝑧) ∈ 𝑤 ∧ 𝑤 ⊆ ((^◡𝐹 “ 𝑥) ∩ (^◡𝐹 “ 𝑦))))) → (𝐹 “ 𝑤) ∈ ((𝐽 qTop 𝐹) ∩ 𝒫 (𝑥 ∩ 𝑦)))
77		elunii 4879	. . . . . . . . 9 ⊢ ((𝑧 ∈ (𝐹 “ 𝑤) ∧ (𝐹 “ 𝑤) ∈ ((𝐽 qTop 𝐹) ∩ 𝒫 (𝑥 ∩ 𝑦))) → 𝑧 ∈ ∪ ((𝐽 qTop 𝐹) ∩ 𝒫 (𝑥 ∩ 𝑦)))
78	47, 76, 77	syl2anc 596	. . . . . . . 8 ⊢ (((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) ∧ (𝑤 ∈ 𝐽 ∧ ((^◡𝐹‘𝑧) ∈ 𝑤 ∧ 𝑤 ⊆ ((^◡𝐹 “ 𝑥) ∩ (^◡𝐹 “ 𝑦))))) → 𝑧 ∈ ∪ ((𝐽 qTop 𝐹) ∩ 𝒫 (𝑥 ∩ 𝑦)))
79	25, 78	rexlimddv 3174	. . . . . . 7 ⊢ ((((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) ∧ 𝑧 ∈ (𝑥 ∩ 𝑦)) → 𝑧 ∈ ∪ ((𝐽 qTop 𝐹) ∩ 𝒫 (𝑥 ∩ 𝑦)))
80	79	ex 418	. . . . . 6 ⊢ (((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) → (𝑧 ∈ (𝑥 ∩ 𝑦) → 𝑧 ∈ ∪ ((𝐽 qTop 𝐹) ∩ 𝒫 (𝑥 ∩ 𝑦))))
81	80	ssrdv 3944	. . . . 5 ⊢ (((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) ∧ (𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) → (𝑥 ∩ 𝑦) ⊆ ∪ ((𝐽 qTop 𝐹) ∩ 𝒫 (𝑥 ∩ 𝑦)))
82	81	3expib 1140	. . . 4 ⊢ ((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) → (((𝑥 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑥) ∈ 𝐽) ∧ (𝑦 ⊆ 𝑌 ∧ (^◡𝐹 “ 𝑦) ∈ 𝐽)) → (𝑥 ∩ 𝑦) ⊆ ∪ ((𝐽 qTop 𝐹) ∩ 𝒫 (𝑥 ∩ 𝑦))))
83	6, 82	sylbid 243	. . 3 ⊢ ((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) → ((𝑥 ∈ (𝐽 qTop 𝐹) ∧ 𝑦 ∈ (𝐽 qTop 𝐹)) → (𝑥 ∩ 𝑦) ⊆ ∪ ((𝐽 qTop 𝐹) ∩ 𝒫 (𝑥 ∩ 𝑦))))
84	83	ralrimivv 3208	. 2 ⊢ ((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) → ∀𝑥 ∈ (𝐽 qTop 𝐹)∀𝑦 ∈ (𝐽 qTop 𝐹)(𝑥 ∩ 𝑦) ⊆ ∪ ((𝐽 qTop 𝐹) ∩ 𝒫 (𝑥 ∩ 𝑦)))
85		ovex 7449	. . 3 ⊢ (𝐽 qTop 𝐹) ∈ V
86		isbasisg 23133	. . 3 ⊢ ((𝐽 qTop 𝐹) ∈ V → ((𝐽 qTop 𝐹) ∈ TopBases ↔ ∀𝑥 ∈ (𝐽 qTop 𝐹)∀𝑦 ∈ (𝐽 qTop 𝐹)(𝑥 ∩ 𝑦) ⊆ ∪ ((𝐽 qTop 𝐹) ∩ 𝒫 (𝑥 ∩ 𝑦))))
87	85, 86	ax-mp 5	. 2 ⊢ ((𝐽 qTop 𝐹) ∈ TopBases ↔ ∀𝑥 ∈ (𝐽 qTop 𝐹)∀𝑦 ∈ (𝐽 qTop 𝐹)(𝑥 ∩ 𝑦) ⊆ ∪ ((𝐽 qTop 𝐹) ∩ 𝒫 (𝑥 ∩ 𝑦)))
88	84, 87	sylibr 237	1 ⊢ ((𝐽 ∈ TopBases ∧ 𝐹:𝑋–1-1-onto→𝑌) → (𝐽 qTop 𝐹) ∈ TopBases)

Colors of variables: wff setvar class

This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 401 ∧ w3a 1103 = wceq 1570 ∈ wcel 2146 ∀wral 3081 ∃wrex 3091 Vcvv 3457 ∩ cin 3905 ⊆ wss 3906 𝒫 cpw 4564 ∪ cuni 4874 ^◡ccnv 5662 dom cdm 5663 ran crn 5664 “ cima 5666 Fun wfun 6534 Fn wfn 6535 –1-1→wf1 6537 –onto→wfo 6538 –1-1-onto→wf1o 6539 ‘cfv 6540 (class class class)co 7416 qTop cqtop 17574 TopBasesctb 23131

This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2737 ax-rep 5240 ax-sep 5259 ax-nul 5271 ax-pow 5338 ax-pr 5406 ax-un 7738

This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-ral 3082 df-rex 3092 df-reu 3372 df-rab 3419 df-v 3459 df-sbc 3747 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-nul 4287 df-if 4490 df-pw 4566 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4875 df-iun 4960 df-br 5112 df-opab 5176 df-mpt 5195 df-id 5558 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 df-iota 6496 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-ov 7419 df-oprab 7420 df-mpo 7421 df-qtop 17578 df-bases 23132

This theorem is used by: (None)

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