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Theorem tgpt0 24127

Description: Hausdorff and T0 are equivalent for topological groups. (Contributed by Mario Carneiro, 18-Sep-2015.)

**Hypothesis**
Ref	Expression
tgpt1.j	⊢ 𝐽 = (TopOpen‘𝐺)

**Assertion**
Ref	Expression
tgpt0	⊢ (𝐺 ∈ TopGrp → (𝐽 ∈ Haus ↔ 𝐽 ∈ Kol2))

Proof of Theorem tgpt0 Dummy variables 𝑤 𝑎 𝑥 𝑦 𝑧 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		tgpt1.j	. . 3 ⊢ 𝐽 = (TopOpen‘𝐺)
2	1	tgpt1 24126	. 2 ⊢ (𝐺 ∈ TopGrp → (𝐽 ∈ Haus ↔ 𝐽 ∈ Fre))
3		t1t0 23356	. . 3 ⊢ (𝐽 ∈ Fre → 𝐽 ∈ Kol2)
4		eleq2 2830	. . . . . . . . . . . 12 ⊢ (𝑤 = 𝑧 → (𝑥 ∈ 𝑤 ↔ 𝑥 ∈ 𝑧))
5		eleq2 2830	. . . . . . . . . . . 12 ⊢ (𝑤 = 𝑧 → (𝑦 ∈ 𝑤 ↔ 𝑦 ∈ 𝑧))
6	4, 5	imbi12d 344	. . . . . . . . . . 11 ⊢ (𝑤 = 𝑧 → ((𝑥 ∈ 𝑤 → 𝑦 ∈ 𝑤) ↔ (𝑥 ∈ 𝑧 → 𝑦 ∈ 𝑧)))
7	6	rspccva 3621	. . . . . . . . . 10 ⊢ ((∀𝑤 ∈ 𝐽 (𝑥 ∈ 𝑤 → 𝑦 ∈ 𝑤) ∧ 𝑧 ∈ 𝐽) → (𝑥 ∈ 𝑧 → 𝑦 ∈ 𝑧))
8	7	adantll 714	. . . . . . . . 9 ⊢ ((((𝐺 ∈ TopGrp ∧ (𝑥 ∈ (Base‘𝐺) ∧ 𝑦 ∈ (Base‘𝐺))) ∧ ∀𝑤 ∈ 𝐽 (𝑥 ∈ 𝑤 → 𝑦 ∈ 𝑤)) ∧ 𝑧 ∈ 𝐽) → (𝑥 ∈ 𝑧 → 𝑦 ∈ 𝑧))
9		tgpgrp 24086	. . . . . . . . . . . . . . 15 ⊢ (𝐺 ∈ TopGrp → 𝐺 ∈ Grp)
10	9	ad3antrrr 730	. . . . . . . . . . . . . 14 ⊢ ((((𝐺 ∈ TopGrp ∧ (𝑥 ∈ (Base‘𝐺) ∧ 𝑦 ∈ (Base‘𝐺))) ∧ ∀𝑤 ∈ 𝐽 (𝑥 ∈ 𝑤 → 𝑦 ∈ 𝑤)) ∧ (𝑧 ∈ 𝐽 ∧ 𝑦 ∈ 𝑧)) → 𝐺 ∈ Grp)
11		simpllr 776	. . . . . . . . . . . . . . 15 ⊢ ((((𝐺 ∈ TopGrp ∧ (𝑥 ∈ (Base‘𝐺) ∧ 𝑦 ∈ (Base‘𝐺))) ∧ ∀𝑤 ∈ 𝐽 (𝑥 ∈ 𝑤 → 𝑦 ∈ 𝑤)) ∧ (𝑧 ∈ 𝐽 ∧ 𝑦 ∈ 𝑧)) → (𝑥 ∈ (Base‘𝐺) ∧ 𝑦 ∈ (Base‘𝐺)))
12	11	simprd 495	. . . . . . . . . . . . . 14 ⊢ ((((𝐺 ∈ TopGrp ∧ (𝑥 ∈ (Base‘𝐺) ∧ 𝑦 ∈ (Base‘𝐺))) ∧ ∀𝑤 ∈ 𝐽 (𝑥 ∈ 𝑤 → 𝑦 ∈ 𝑤)) ∧ (𝑧 ∈ 𝐽 ∧ 𝑦 ∈ 𝑧)) → 𝑦 ∈ (Base‘𝐺))
13		eqid 2737	. . . . . . . . . . . . . . 15 ⊢ (Base‘𝐺) = (Base‘𝐺)
14		eqid 2737	. . . . . . . . . . . . . . 15 ⊢ (0_g‘𝐺) = (0_g‘𝐺)
15		eqid 2737	. . . . . . . . . . . . . . 15 ⊢ (-_g‘𝐺) = (-_g‘𝐺)
16	13, 14, 15	grpsubid 19042	. . . . . . . . . . . . . 14 ⊢ ((𝐺 ∈ Grp ∧ 𝑦 ∈ (Base‘𝐺)) → (𝑦(-_g‘𝐺)𝑦) = (0_g‘𝐺))
17	10, 12, 16	syl2anc 584	. . . . . . . . . . . . 13 ⊢ ((((𝐺 ∈ TopGrp ∧ (𝑥 ∈ (Base‘𝐺) ∧ 𝑦 ∈ (Base‘𝐺))) ∧ ∀𝑤 ∈ 𝐽 (𝑥 ∈ 𝑤 → 𝑦 ∈ 𝑤)) ∧ (𝑧 ∈ 𝐽 ∧ 𝑦 ∈ 𝑧)) → (𝑦(-_g‘𝐺)𝑦) = (0_g‘𝐺))
18	17	oveq1d 7446	. . . . . . . . . . . 12 ⊢ ((((𝐺 ∈ TopGrp ∧ (𝑥 ∈ (Base‘𝐺) ∧ 𝑦 ∈ (Base‘𝐺))) ∧ ∀𝑤 ∈ 𝐽 (𝑥 ∈ 𝑤 → 𝑦 ∈ 𝑤)) ∧ (𝑧 ∈ 𝐽 ∧ 𝑦 ∈ 𝑧)) → ((𝑦(-_g‘𝐺)𝑦)(+_g‘𝐺)𝑥) = ((0_g‘𝐺)(+_g‘𝐺)𝑥))
19	11	simpld 494	. . . . . . . . . . . . 13 ⊢ ((((𝐺 ∈ TopGrp ∧ (𝑥 ∈ (Base‘𝐺) ∧ 𝑦 ∈ (Base‘𝐺))) ∧ ∀𝑤 ∈ 𝐽 (𝑥 ∈ 𝑤 → 𝑦 ∈ 𝑤)) ∧ (𝑧 ∈ 𝐽 ∧ 𝑦 ∈ 𝑧)) → 𝑥 ∈ (Base‘𝐺))
20		eqid 2737	. . . . . . . . . . . . . 14 ⊢ (+_g‘𝐺) = (+_g‘𝐺)
21	13, 20, 14	grplid 18985	. . . . . . . . . . . . 13 ⊢ ((𝐺 ∈ Grp ∧ 𝑥 ∈ (Base‘𝐺)) → ((0_g‘𝐺)(+_g‘𝐺)𝑥) = 𝑥)
22	10, 19, 21	syl2anc 584	. . . . . . . . . . . 12 ⊢ ((((𝐺 ∈ TopGrp ∧ (𝑥 ∈ (Base‘𝐺) ∧ 𝑦 ∈ (Base‘𝐺))) ∧ ∀𝑤 ∈ 𝐽 (𝑥 ∈ 𝑤 → 𝑦 ∈ 𝑤)) ∧ (𝑧 ∈ 𝐽 ∧ 𝑦 ∈ 𝑧)) → ((0_g‘𝐺)(+_g‘𝐺)𝑥) = 𝑥)
23	18, 22	eqtrd 2777	. . . . . . . . . . 11 ⊢ ((((𝐺 ∈ TopGrp ∧ (𝑥 ∈ (Base‘𝐺) ∧ 𝑦 ∈ (Base‘𝐺))) ∧ ∀𝑤 ∈ 𝐽 (𝑥 ∈ 𝑤 → 𝑦 ∈ 𝑤)) ∧ (𝑧 ∈ 𝐽 ∧ 𝑦 ∈ 𝑧)) → ((𝑦(-_g‘𝐺)𝑦)(+_g‘𝐺)𝑥) = 𝑥)
24	13, 20, 15	grpnpcan 19050	. . . . . . . . . . . . . . . 16 ⊢ ((𝐺 ∈ Grp ∧ 𝑦 ∈ (Base‘𝐺) ∧ 𝑥 ∈ (Base‘𝐺)) → ((𝑦(-_g‘𝐺)𝑥)(+_g‘𝐺)𝑥) = 𝑦)
25	10, 12, 19, 24	syl3anc 1373	. . . . . . . . . . . . . . 15 ⊢ ((((𝐺 ∈ TopGrp ∧ (𝑥 ∈ (Base‘𝐺) ∧ 𝑦 ∈ (Base‘𝐺))) ∧ ∀𝑤 ∈ 𝐽 (𝑥 ∈ 𝑤 → 𝑦 ∈ 𝑤)) ∧ (𝑧 ∈ 𝐽 ∧ 𝑦 ∈ 𝑧)) → ((𝑦(-_g‘𝐺)𝑥)(+_g‘𝐺)𝑥) = 𝑦)
26		simprr 773	. . . . . . . . . . . . . . 15 ⊢ ((((𝐺 ∈ TopGrp ∧ (𝑥 ∈ (Base‘𝐺) ∧ 𝑦 ∈ (Base‘𝐺))) ∧ ∀𝑤 ∈ 𝐽 (𝑥 ∈ 𝑤 → 𝑦 ∈ 𝑤)) ∧ (𝑧 ∈ 𝐽 ∧ 𝑦 ∈ 𝑧)) → 𝑦 ∈ 𝑧)
27	25, 26	eqeltrd 2841	. . . . . . . . . . . . . 14 ⊢ ((((𝐺 ∈ TopGrp ∧ (𝑥 ∈ (Base‘𝐺) ∧ 𝑦 ∈ (Base‘𝐺))) ∧ ∀𝑤 ∈ 𝐽 (𝑥 ∈ 𝑤 → 𝑦 ∈ 𝑤)) ∧ (𝑧 ∈ 𝐽 ∧ 𝑦 ∈ 𝑧)) → ((𝑦(-_g‘𝐺)𝑥)(+_g‘𝐺)𝑥) ∈ 𝑧)
28		oveq2 7439	. . . . . . . . . . . . . . . . 17 ⊢ (𝑎 = 𝑥 → (𝑦(-_g‘𝐺)𝑎) = (𝑦(-_g‘𝐺)𝑥))
29	28	oveq1d 7446	. . . . . . . . . . . . . . . 16 ⊢ (𝑎 = 𝑥 → ((𝑦(-_g‘𝐺)𝑎)(+_g‘𝐺)𝑥) = ((𝑦(-_g‘𝐺)𝑥)(+_g‘𝐺)𝑥))
30	29	eleq1d 2826	. . . . . . . . . . . . . . 15 ⊢ (𝑎 = 𝑥 → (((𝑦(-_g‘𝐺)𝑎)(+_g‘𝐺)𝑥) ∈ 𝑧 ↔ ((𝑦(-_g‘𝐺)𝑥)(+_g‘𝐺)𝑥) ∈ 𝑧))
31		eqid 2737	. . . . . . . . . . . . . . . 16 ⊢ (𝑎 ∈ (Base‘𝐺) ↦ ((𝑦(-_g‘𝐺)𝑎)(+_g‘𝐺)𝑥)) = (𝑎 ∈ (Base‘𝐺) ↦ ((𝑦(-_g‘𝐺)𝑎)(+_g‘𝐺)𝑥))
32	31	mptpreima 6258	. . . . . . . . . . . . . . 15 ⊢ (^◡(𝑎 ∈ (Base‘𝐺) ↦ ((𝑦(-_g‘𝐺)𝑎)(+_g‘𝐺)𝑥)) “ 𝑧) = {𝑎 ∈ (Base‘𝐺) ∣ ((𝑦(-_g‘𝐺)𝑎)(+_g‘𝐺)𝑥) ∈ 𝑧}
33	30, 32	elrab2 3695	. . . . . . . . . . . . . 14 ⊢ (𝑥 ∈ (^◡(𝑎 ∈ (Base‘𝐺) ↦ ((𝑦(-_g‘𝐺)𝑎)(+_g‘𝐺)𝑥)) “ 𝑧) ↔ (𝑥 ∈ (Base‘𝐺) ∧ ((𝑦(-_g‘𝐺)𝑥)(+_g‘𝐺)𝑥) ∈ 𝑧))
34	19, 27, 33	sylanbrc 583	. . . . . . . . . . . . 13 ⊢ ((((𝐺 ∈ TopGrp ∧ (𝑥 ∈ (Base‘𝐺) ∧ 𝑦 ∈ (Base‘𝐺))) ∧ ∀𝑤 ∈ 𝐽 (𝑥 ∈ 𝑤 → 𝑦 ∈ 𝑤)) ∧ (𝑧 ∈ 𝐽 ∧ 𝑦 ∈ 𝑧)) → 𝑥 ∈ (^◡(𝑎 ∈ (Base‘𝐺) ↦ ((𝑦(-_g‘𝐺)𝑎)(+_g‘𝐺)𝑥)) “ 𝑧))
35		eleq2 2830	. . . . . . . . . . . . . . 15 ⊢ (𝑤 = (^◡(𝑎 ∈ (Base‘𝐺) ↦ ((𝑦(-_g‘𝐺)𝑎)(+_g‘𝐺)𝑥)) “ 𝑧) → (𝑥 ∈ 𝑤 ↔ 𝑥 ∈ (^◡(𝑎 ∈ (Base‘𝐺) ↦ ((𝑦(-_g‘𝐺)𝑎)(+_g‘𝐺)𝑥)) “ 𝑧)))
36		eleq2 2830	. . . . . . . . . . . . . . 15 ⊢ (𝑤 = (^◡(𝑎 ∈ (Base‘𝐺) ↦ ((𝑦(-_g‘𝐺)𝑎)(+_g‘𝐺)𝑥)) “ 𝑧) → (𝑦 ∈ 𝑤 ↔ 𝑦 ∈ (^◡(𝑎 ∈ (Base‘𝐺) ↦ ((𝑦(-_g‘𝐺)𝑎)(+_g‘𝐺)𝑥)) “ 𝑧)))
37	35, 36	imbi12d 344	. . . . . . . . . . . . . 14 ⊢ (𝑤 = (^◡(𝑎 ∈ (Base‘𝐺) ↦ ((𝑦(-_g‘𝐺)𝑎)(+_g‘𝐺)𝑥)) “ 𝑧) → ((𝑥 ∈ 𝑤 → 𝑦 ∈ 𝑤) ↔ (𝑥 ∈ (^◡(𝑎 ∈ (Base‘𝐺) ↦ ((𝑦(-_g‘𝐺)𝑎)(+_g‘𝐺)𝑥)) “ 𝑧) → 𝑦 ∈ (^◡(𝑎 ∈ (Base‘𝐺) ↦ ((𝑦(-_g‘𝐺)𝑎)(+_g‘𝐺)𝑥)) “ 𝑧))))
38		simplr 769	. . . . . . . . . . . . . 14 ⊢ ((((𝐺 ∈ TopGrp ∧ (𝑥 ∈ (Base‘𝐺) ∧ 𝑦 ∈ (Base‘𝐺))) ∧ ∀𝑤 ∈ 𝐽 (𝑥 ∈ 𝑤 → 𝑦 ∈ 𝑤)) ∧ (𝑧 ∈ 𝐽 ∧ 𝑦 ∈ 𝑧)) → ∀𝑤 ∈ 𝐽 (𝑥 ∈ 𝑤 → 𝑦 ∈ 𝑤))
39		tgptmd 24087	. . . . . . . . . . . . . . . . 17 ⊢ (𝐺 ∈ TopGrp → 𝐺 ∈ TopMnd)
40	39	ad3antrrr 730	. . . . . . . . . . . . . . . 16 ⊢ ((((𝐺 ∈ TopGrp ∧ (𝑥 ∈ (Base‘𝐺) ∧ 𝑦 ∈ (Base‘𝐺))) ∧ ∀𝑤 ∈ 𝐽 (𝑥 ∈ 𝑤 → 𝑦 ∈ 𝑤)) ∧ (𝑧 ∈ 𝐽 ∧ 𝑦 ∈ 𝑧)) → 𝐺 ∈ TopMnd)
41	1, 13	tgptopon 24090	. . . . . . . . . . . . . . . . 17 ⊢ (𝐺 ∈ TopGrp → 𝐽 ∈ (TopOn‘(Base‘𝐺)))
42	41	ad3antrrr 730	. . . . . . . . . . . . . . . 16 ⊢ ((((𝐺 ∈ TopGrp ∧ (𝑥 ∈ (Base‘𝐺) ∧ 𝑦 ∈ (Base‘𝐺))) ∧ ∀𝑤 ∈ 𝐽 (𝑥 ∈ 𝑤 → 𝑦 ∈ 𝑤)) ∧ (𝑧 ∈ 𝐽 ∧ 𝑦 ∈ 𝑧)) → 𝐽 ∈ (TopOn‘(Base‘𝐺)))
43	42, 42, 12	cnmptc 23670	. . . . . . . . . . . . . . . . 17 ⊢ ((((𝐺 ∈ TopGrp ∧ (𝑥 ∈ (Base‘𝐺) ∧ 𝑦 ∈ (Base‘𝐺))) ∧ ∀𝑤 ∈ 𝐽 (𝑥 ∈ 𝑤 → 𝑦 ∈ 𝑤)) ∧ (𝑧 ∈ 𝐽 ∧ 𝑦 ∈ 𝑧)) → (𝑎 ∈ (Base‘𝐺) ↦ 𝑦) ∈ (𝐽 Cn 𝐽))
44	42	cnmptid 23669	. . . . . . . . . . . . . . . . 17 ⊢ ((((𝐺 ∈ TopGrp ∧ (𝑥 ∈ (Base‘𝐺) ∧ 𝑦 ∈ (Base‘𝐺))) ∧ ∀𝑤 ∈ 𝐽 (𝑥 ∈ 𝑤 → 𝑦 ∈ 𝑤)) ∧ (𝑧 ∈ 𝐽 ∧ 𝑦 ∈ 𝑧)) → (𝑎 ∈ (Base‘𝐺) ↦ 𝑎) ∈ (𝐽 Cn 𝐽))
45	1, 15	tgpsubcn 24098	. . . . . . . . . . . . . . . . . 18 ⊢ (𝐺 ∈ TopGrp → (-_g‘𝐺) ∈ ((𝐽 ×_t 𝐽) Cn 𝐽))
46	45	ad3antrrr 730	. . . . . . . . . . . . . . . . 17 ⊢ ((((𝐺 ∈ TopGrp ∧ (𝑥 ∈ (Base‘𝐺) ∧ 𝑦 ∈ (Base‘𝐺))) ∧ ∀𝑤 ∈ 𝐽 (𝑥 ∈ 𝑤 → 𝑦 ∈ 𝑤)) ∧ (𝑧 ∈ 𝐽 ∧ 𝑦 ∈ 𝑧)) → (-_g‘𝐺) ∈ ((𝐽 ×_t 𝐽) Cn 𝐽))
47	42, 43, 44, 46	cnmpt12f 23674	. . . . . . . . . . . . . . . 16 ⊢ ((((𝐺 ∈ TopGrp ∧ (𝑥 ∈ (Base‘𝐺) ∧ 𝑦 ∈ (Base‘𝐺))) ∧ ∀𝑤 ∈ 𝐽 (𝑥 ∈ 𝑤 → 𝑦 ∈ 𝑤)) ∧ (𝑧 ∈ 𝐽 ∧ 𝑦 ∈ 𝑧)) → (𝑎 ∈ (Base‘𝐺) ↦ (𝑦(-_g‘𝐺)𝑎)) ∈ (𝐽 Cn 𝐽))
48	42, 42, 19	cnmptc 23670	. . . . . . . . . . . . . . . 16 ⊢ ((((𝐺 ∈ TopGrp ∧ (𝑥 ∈ (Base‘𝐺) ∧ 𝑦 ∈ (Base‘𝐺))) ∧ ∀𝑤 ∈ 𝐽 (𝑥 ∈ 𝑤 → 𝑦 ∈ 𝑤)) ∧ (𝑧 ∈ 𝐽 ∧ 𝑦 ∈ 𝑧)) → (𝑎 ∈ (Base‘𝐺) ↦ 𝑥) ∈ (𝐽 Cn 𝐽))
49	1, 20, 40, 42, 47, 48	cnmpt1plusg 24095	. . . . . . . . . . . . . . 15 ⊢ ((((𝐺 ∈ TopGrp ∧ (𝑥 ∈ (Base‘𝐺) ∧ 𝑦 ∈ (Base‘𝐺))) ∧ ∀𝑤 ∈ 𝐽 (𝑥 ∈ 𝑤 → 𝑦 ∈ 𝑤)) ∧ (𝑧 ∈ 𝐽 ∧ 𝑦 ∈ 𝑧)) → (𝑎 ∈ (Base‘𝐺) ↦ ((𝑦(-_g‘𝐺)𝑎)(+_g‘𝐺)𝑥)) ∈ (𝐽 Cn 𝐽))
50		simprl 771	. . . . . . . . . . . . . . 15 ⊢ ((((𝐺 ∈ TopGrp ∧ (𝑥 ∈ (Base‘𝐺) ∧ 𝑦 ∈ (Base‘𝐺))) ∧ ∀𝑤 ∈ 𝐽 (𝑥 ∈ 𝑤 → 𝑦 ∈ 𝑤)) ∧ (𝑧 ∈ 𝐽 ∧ 𝑦 ∈ 𝑧)) → 𝑧 ∈ 𝐽)
51		cnima 23273	. . . . . . . . . . . . . . 15 ⊢ (((𝑎 ∈ (Base‘𝐺) ↦ ((𝑦(-_g‘𝐺)𝑎)(+_g‘𝐺)𝑥)) ∈ (𝐽 Cn 𝐽) ∧ 𝑧 ∈ 𝐽) → (^◡(𝑎 ∈ (Base‘𝐺) ↦ ((𝑦(-_g‘𝐺)𝑎)(+_g‘𝐺)𝑥)) “ 𝑧) ∈ 𝐽)
52	49, 50, 51	syl2anc 584	. . . . . . . . . . . . . 14 ⊢ ((((𝐺 ∈ TopGrp ∧ (𝑥 ∈ (Base‘𝐺) ∧ 𝑦 ∈ (Base‘𝐺))) ∧ ∀𝑤 ∈ 𝐽 (𝑥 ∈ 𝑤 → 𝑦 ∈ 𝑤)) ∧ (𝑧 ∈ 𝐽 ∧ 𝑦 ∈ 𝑧)) → (^◡(𝑎 ∈ (Base‘𝐺) ↦ ((𝑦(-_g‘𝐺)𝑎)(+_g‘𝐺)𝑥)) “ 𝑧) ∈ 𝐽)
53	37, 38, 52	rspcdva 3623	. . . . . . . . . . . . 13 ⊢ ((((𝐺 ∈ TopGrp ∧ (𝑥 ∈ (Base‘𝐺) ∧ 𝑦 ∈ (Base‘𝐺))) ∧ ∀𝑤 ∈ 𝐽 (𝑥 ∈ 𝑤 → 𝑦 ∈ 𝑤)) ∧ (𝑧 ∈ 𝐽 ∧ 𝑦 ∈ 𝑧)) → (𝑥 ∈ (^◡(𝑎 ∈ (Base‘𝐺) ↦ ((𝑦(-_g‘𝐺)𝑎)(+_g‘𝐺)𝑥)) “ 𝑧) → 𝑦 ∈ (^◡(𝑎 ∈ (Base‘𝐺) ↦ ((𝑦(-_g‘𝐺)𝑎)(+_g‘𝐺)𝑥)) “ 𝑧)))
54	34, 53	mpd 15	. . . . . . . . . . . 12 ⊢ ((((𝐺 ∈ TopGrp ∧ (𝑥 ∈ (Base‘𝐺) ∧ 𝑦 ∈ (Base‘𝐺))) ∧ ∀𝑤 ∈ 𝐽 (𝑥 ∈ 𝑤 → 𝑦 ∈ 𝑤)) ∧ (𝑧 ∈ 𝐽 ∧ 𝑦 ∈ 𝑧)) → 𝑦 ∈ (^◡(𝑎 ∈ (Base‘𝐺) ↦ ((𝑦(-_g‘𝐺)𝑎)(+_g‘𝐺)𝑥)) “ 𝑧))
55		oveq2 7439	. . . . . . . . . . . . . . . 16 ⊢ (𝑎 = 𝑦 → (𝑦(-_g‘𝐺)𝑎) = (𝑦(-_g‘𝐺)𝑦))
56	55	oveq1d 7446	. . . . . . . . . . . . . . 15 ⊢ (𝑎 = 𝑦 → ((𝑦(-_g‘𝐺)𝑎)(+_g‘𝐺)𝑥) = ((𝑦(-_g‘𝐺)𝑦)(+_g‘𝐺)𝑥))
57	56	eleq1d 2826	. . . . . . . . . . . . . 14 ⊢ (𝑎 = 𝑦 → (((𝑦(-_g‘𝐺)𝑎)(+_g‘𝐺)𝑥) ∈ 𝑧 ↔ ((𝑦(-_g‘𝐺)𝑦)(+_g‘𝐺)𝑥) ∈ 𝑧))
58	57, 32	elrab2 3695	. . . . . . . . . . . . 13 ⊢ (𝑦 ∈ (^◡(𝑎 ∈ (Base‘𝐺) ↦ ((𝑦(-_g‘𝐺)𝑎)(+_g‘𝐺)𝑥)) “ 𝑧) ↔ (𝑦 ∈ (Base‘𝐺) ∧ ((𝑦(-_g‘𝐺)𝑦)(+_g‘𝐺)𝑥) ∈ 𝑧))
59	58	simprbi 496	. . . . . . . . . . . 12 ⊢ (𝑦 ∈ (^◡(𝑎 ∈ (Base‘𝐺) ↦ ((𝑦(-_g‘𝐺)𝑎)(+_g‘𝐺)𝑥)) “ 𝑧) → ((𝑦(-_g‘𝐺)𝑦)(+_g‘𝐺)𝑥) ∈ 𝑧)
60	54, 59	syl 17	. . . . . . . . . . 11 ⊢ ((((𝐺 ∈ TopGrp ∧ (𝑥 ∈ (Base‘𝐺) ∧ 𝑦 ∈ (Base‘𝐺))) ∧ ∀𝑤 ∈ 𝐽 (𝑥 ∈ 𝑤 → 𝑦 ∈ 𝑤)) ∧ (𝑧 ∈ 𝐽 ∧ 𝑦 ∈ 𝑧)) → ((𝑦(-_g‘𝐺)𝑦)(+_g‘𝐺)𝑥) ∈ 𝑧)
61	23, 60	eqeltrrd 2842	. . . . . . . . . 10 ⊢ ((((𝐺 ∈ TopGrp ∧ (𝑥 ∈ (Base‘𝐺) ∧ 𝑦 ∈ (Base‘𝐺))) ∧ ∀𝑤 ∈ 𝐽 (𝑥 ∈ 𝑤 → 𝑦 ∈ 𝑤)) ∧ (𝑧 ∈ 𝐽 ∧ 𝑦 ∈ 𝑧)) → 𝑥 ∈ 𝑧)
62	61	expr 456	. . . . . . . . 9 ⊢ ((((𝐺 ∈ TopGrp ∧ (𝑥 ∈ (Base‘𝐺) ∧ 𝑦 ∈ (Base‘𝐺))) ∧ ∀𝑤 ∈ 𝐽 (𝑥 ∈ 𝑤 → 𝑦 ∈ 𝑤)) ∧ 𝑧 ∈ 𝐽) → (𝑦 ∈ 𝑧 → 𝑥 ∈ 𝑧))
63	8, 62	impbid 212	. . . . . . . 8 ⊢ ((((𝐺 ∈ TopGrp ∧ (𝑥 ∈ (Base‘𝐺) ∧ 𝑦 ∈ (Base‘𝐺))) ∧ ∀𝑤 ∈ 𝐽 (𝑥 ∈ 𝑤 → 𝑦 ∈ 𝑤)) ∧ 𝑧 ∈ 𝐽) → (𝑥 ∈ 𝑧 ↔ 𝑦 ∈ 𝑧))
64	63	ralrimiva 3146	. . . . . . 7 ⊢ (((𝐺 ∈ TopGrp ∧ (𝑥 ∈ (Base‘𝐺) ∧ 𝑦 ∈ (Base‘𝐺))) ∧ ∀𝑤 ∈ 𝐽 (𝑥 ∈ 𝑤 → 𝑦 ∈ 𝑤)) → ∀𝑧 ∈ 𝐽 (𝑥 ∈ 𝑧 ↔ 𝑦 ∈ 𝑧))
65	64	ex 412	. . . . . 6 ⊢ ((𝐺 ∈ TopGrp ∧ (𝑥 ∈ (Base‘𝐺) ∧ 𝑦 ∈ (Base‘𝐺))) → (∀𝑤 ∈ 𝐽 (𝑥 ∈ 𝑤 → 𝑦 ∈ 𝑤) → ∀𝑧 ∈ 𝐽 (𝑥 ∈ 𝑧 ↔ 𝑦 ∈ 𝑧)))
66	65	imim1d 82	. . . . 5 ⊢ ((𝐺 ∈ TopGrp ∧ (𝑥 ∈ (Base‘𝐺) ∧ 𝑦 ∈ (Base‘𝐺))) → ((∀𝑧 ∈ 𝐽 (𝑥 ∈ 𝑧 ↔ 𝑦 ∈ 𝑧) → 𝑥 = 𝑦) → (∀𝑤 ∈ 𝐽 (𝑥 ∈ 𝑤 → 𝑦 ∈ 𝑤) → 𝑥 = 𝑦)))
67	66	ralimdvva 3206	. . . 4 ⊢ (𝐺 ∈ TopGrp → (∀𝑥 ∈ (Base‘𝐺)∀𝑦 ∈ (Base‘𝐺)(∀𝑧 ∈ 𝐽 (𝑥 ∈ 𝑧 ↔ 𝑦 ∈ 𝑧) → 𝑥 = 𝑦) → ∀𝑥 ∈ (Base‘𝐺)∀𝑦 ∈ (Base‘𝐺)(∀𝑤 ∈ 𝐽 (𝑥 ∈ 𝑤 → 𝑦 ∈ 𝑤) → 𝑥 = 𝑦)))
68		ist0-2 23352	. . . . 5 ⊢ (𝐽 ∈ (TopOn‘(Base‘𝐺)) → (𝐽 ∈ Kol2 ↔ ∀𝑥 ∈ (Base‘𝐺)∀𝑦 ∈ (Base‘𝐺)(∀𝑧 ∈ 𝐽 (𝑥 ∈ 𝑧 ↔ 𝑦 ∈ 𝑧) → 𝑥 = 𝑦)))
69	41, 68	syl 17	. . . 4 ⊢ (𝐺 ∈ TopGrp → (𝐽 ∈ Kol2 ↔ ∀𝑥 ∈ (Base‘𝐺)∀𝑦 ∈ (Base‘𝐺)(∀𝑧 ∈ 𝐽 (𝑥 ∈ 𝑧 ↔ 𝑦 ∈ 𝑧) → 𝑥 = 𝑦)))
70		ist1-2 23355	. . . . 5 ⊢ (𝐽 ∈ (TopOn‘(Base‘𝐺)) → (𝐽 ∈ Fre ↔ ∀𝑥 ∈ (Base‘𝐺)∀𝑦 ∈ (Base‘𝐺)(∀𝑤 ∈ 𝐽 (𝑥 ∈ 𝑤 → 𝑦 ∈ 𝑤) → 𝑥 = 𝑦)))
71	41, 70	syl 17	. . . 4 ⊢ (𝐺 ∈ TopGrp → (𝐽 ∈ Fre ↔ ∀𝑥 ∈ (Base‘𝐺)∀𝑦 ∈ (Base‘𝐺)(∀𝑤 ∈ 𝐽 (𝑥 ∈ 𝑤 → 𝑦 ∈ 𝑤) → 𝑥 = 𝑦)))
72	67, 69, 71	3imtr4d 294	. . 3 ⊢ (𝐺 ∈ TopGrp → (𝐽 ∈ Kol2 → 𝐽 ∈ Fre))
73	3, 72	impbid2 226	. 2 ⊢ (𝐺 ∈ TopGrp → (𝐽 ∈ Fre ↔ 𝐽 ∈ Kol2))
74	2, 73	bitrd 279	1 ⊢ (𝐺 ∈ TopGrp → (𝐽 ∈ Haus ↔ 𝐽 ∈ Kol2))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 = wceq 1540 ∈ wcel 2108 ∀wral 3061 ↦ cmpt 5225 ^◡ccnv 5684 “ cima 5688 ‘cfv 6561 (class class class)co 7431 Basecbs 17247 +_gcplusg 17297 TopOpenctopn 17466 0_gc0g 17484 Grpcgrp 18951 -_gcsg 18953 TopOnctopon 22916 Cn ccn 23232 Kol2ct0 23314 Frect1 23315 Hauscha 23316 ×_t ctx 23568 TopMndctmd 24078 TopGrpctgp 24079

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2007 ax-8 2110 ax-9 2118 ax-10 2141 ax-11 2157 ax-12 2177 ax-ext 2708 ax-sep 5296 ax-nul 5306 ax-pow 5365 ax-pr 5432 ax-un 7755

This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2065 df-mo 2540 df-eu 2569 df-clab 2715 df-cleq 2729 df-clel 2816 df-nfc 2892 df-ne 2941 df-ral 3062 df-rex 3071 df-rmo 3380 df-reu 3381 df-rab 3437 df-v 3482 df-sbc 3789 df-csb 3900 df-dif 3954 df-un 3956 df-in 3958 df-ss 3968 df-nul 4334 df-if 4526 df-pw 4602 df-sn 4627 df-pr 4629 df-op 4633 df-uni 4908 df-iun 4993 df-br 5144 df-opab 5206 df-mpt 5226 df-id 5578 df-xp 5691 df-rel 5692 df-cnv 5693 df-co 5694 df-dm 5695 df-rn 5696 df-res 5697 df-ima 5698 df-iota 6514 df-fun 6563 df-fn 6564 df-f 6565 df-f1 6566 df-fo 6567 df-f1o 6568 df-fv 6569 df-riota 7388 df-ov 7434 df-oprab 7435 df-mpo 7436 df-1st 8014 df-2nd 8015 df-map 8868 df-0g 17486 df-topgen 17488 df-plusf 18652 df-mgm 18653 df-sgrp 18732 df-mnd 18748 df-grp 18954 df-minusg 18955 df-sbg 18956 df-top 22900 df-topon 22917 df-topsp 22939 df-bases 22953 df-cld 23027 df-cn 23235 df-cnp 23236 df-t0 23321 df-t1 23322 df-haus 23323 df-tx 23570 df-tmd 24080 df-tgp 24081

This theorem is referenced by: (None)

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