Theorem dislly 23487

Description: The discrete space 𝒫 𝑋 is locally 𝐴 if and only if every singleton space has property 𝐴. (Contributed by Mario Carneiro, 20-Mar-2015.)

Assertion

Ref	Expression
dislly	⊢ (𝑋 ∈ 𝑉 → (𝒫 𝑋 ∈ Locally 𝐴 ↔ ∀𝑥 ∈ 𝑋 𝒫 {𝑥} ∈ 𝐴))

Distinct variable groups:   𝑥,𝐴   𝑥,𝑉   𝑥,𝑋

Proof of Theorem dislly

Dummy variables 𝑢 𝑦 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		simplr 774	. . . . 5 ⊢ (((𝑋 ∈ 𝑉 ∧ 𝒫 𝑋 ∈ Locally 𝐴) ∧ 𝑥 ∈ 𝑋) → 𝒫 𝑋 ∈ Locally 𝐴)
2		vex 3436	. . . . . . 7 ⊢ 𝑥 ∈ V
3	2	snelpw 5391	. . . . . 6 ⊢ (𝑥 ∈ 𝑋 ↔ {𝑥} ∈ 𝒫 𝑋)
4	3	bilani 505	. . . . 5 ⊢ (((𝑋 ∈ 𝑉 ∧ 𝒫 𝑋 ∈ Locally 𝐴) ∧ 𝑥 ∈ 𝑋) → {𝑥} ∈ 𝒫 𝑋)
5		vsnid 4602	. . . . . 6 ⊢ 𝑥 ∈ {𝑥}
6	5	a1i 11	. . . . 5 ⊢ (((𝑋 ∈ 𝑉 ∧ 𝒫 𝑋 ∈ Locally 𝐴) ∧ 𝑥 ∈ 𝑋) → 𝑥 ∈ {𝑥})
7		llyi 23464	. . . . 5 ⊢ ((𝒫 𝑋 ∈ Locally 𝐴 ∧ {𝑥} ∈ 𝒫 𝑋 ∧ 𝑥 ∈ {𝑥}) → ∃𝑦 ∈ 𝒫 𝑋(𝑦 ⊆ {𝑥} ∧ 𝑥 ∈ 𝑦 ∧ (𝒫 𝑋 ↾t 𝑦) ∈ 𝐴))
8	1, 4, 6, 7	syl3anc 1379	. . . 4 ⊢ (((𝑋 ∈ 𝑉 ∧ 𝒫 𝑋 ∈ Locally 𝐴) ∧ 𝑥 ∈ 𝑋) → ∃𝑦 ∈ 𝒫 𝑋(𝑦 ⊆ {𝑥} ∧ 𝑥 ∈ 𝑦 ∧ (𝒫 𝑋 ↾t 𝑦) ∈ 𝐴))
9		simpr1 1201	. . . . . . . . . 10 ⊢ ((((𝑋 ∈ 𝑉 ∧ 𝒫 𝑋 ∈ Locally 𝐴) ∧ 𝑥 ∈ 𝑋) ∧ (𝑦 ⊆ {𝑥} ∧ 𝑥 ∈ 𝑦 ∧ (𝒫 𝑋 ↾t 𝑦) ∈ 𝐴)) → 𝑦 ⊆ {𝑥})
10		simpr2 1202	. . . . . . . . . . 11 ⊢ ((((𝑋 ∈ 𝑉 ∧ 𝒫 𝑋 ∈ Locally 𝐴) ∧ 𝑥 ∈ 𝑋) ∧ (𝑦 ⊆ {𝑥} ∧ 𝑥 ∈ 𝑦 ∧ (𝒫 𝑋 ↾t 𝑦) ∈ 𝐴)) → 𝑥 ∈ 𝑦)
11	10	snssd 4725	. . . . . . . . . 10 ⊢ ((((𝑋 ∈ 𝑉 ∧ 𝒫 𝑋 ∈ Locally 𝐴) ∧ 𝑥 ∈ 𝑋) ∧ (𝑦 ⊆ {𝑥} ∧ 𝑥 ∈ 𝑦 ∧ (𝒫 𝑋 ↾t 𝑦) ∈ 𝐴)) → {𝑥} ⊆ 𝑦)
12	9, 11	eqssd 3939	. . . . . . . . 9 ⊢ ((((𝑋 ∈ 𝑉 ∧ 𝒫 𝑋 ∈ Locally 𝐴) ∧ 𝑥 ∈ 𝑋) ∧ (𝑦 ⊆ {𝑥} ∧ 𝑥 ∈ 𝑦 ∧ (𝒫 𝑋 ↾t 𝑦) ∈ 𝐴)) → 𝑦 = {𝑥})
13	12	oveq2d 7379	. . . . . . . 8 ⊢ ((((𝑋 ∈ 𝑉 ∧ 𝒫 𝑋 ∈ Locally 𝐴) ∧ 𝑥 ∈ 𝑋) ∧ (𝑦 ⊆ {𝑥} ∧ 𝑥 ∈ 𝑦 ∧ (𝒫 𝑋 ↾t 𝑦) ∈ 𝐴)) → (𝒫 𝑋 ↾t 𝑦) = (𝒫 𝑋 ↾t {𝑥}))
14		simplll 780	. . . . . . . . 9 ⊢ ((((𝑋 ∈ 𝑉 ∧ 𝒫 𝑋 ∈ Locally 𝐴) ∧ 𝑥 ∈ 𝑋) ∧ (𝑦 ⊆ {𝑥} ∧ 𝑥 ∈ 𝑦 ∧ (𝒫 𝑋 ↾t 𝑦) ∈ 𝐴)) → 𝑋 ∈ 𝑉)
15		simplr 774	. . . . . . . . . 10 ⊢ ((((𝑋 ∈ 𝑉 ∧ 𝒫 𝑋 ∈ Locally 𝐴) ∧ 𝑥 ∈ 𝑋) ∧ (𝑦 ⊆ {𝑥} ∧ 𝑥 ∈ 𝑦 ∧ (𝒫 𝑋 ↾t 𝑦) ∈ 𝐴)) → 𝑥 ∈ 𝑋)
16	15	snssd 4725	. . . . . . . . 9 ⊢ ((((𝑋 ∈ 𝑉 ∧ 𝒫 𝑋 ∈ Locally 𝐴) ∧ 𝑥 ∈ 𝑋) ∧ (𝑦 ⊆ {𝑥} ∧ 𝑥 ∈ 𝑦 ∧ (𝒫 𝑋 ↾t 𝑦) ∈ 𝐴)) → {𝑥} ⊆ 𝑋)
17		restdis 23168	. . . . . . . . 9 ⊢ ((𝑋 ∈ 𝑉 ∧ {𝑥} ⊆ 𝑋) → (𝒫 𝑋 ↾t {𝑥}) = 𝒫 {𝑥})
18	14, 16, 17	syl2anc 590	. . . . . . . 8 ⊢ ((((𝑋 ∈ 𝑉 ∧ 𝒫 𝑋 ∈ Locally 𝐴) ∧ 𝑥 ∈ 𝑋) ∧ (𝑦 ⊆ {𝑥} ∧ 𝑥 ∈ 𝑦 ∧ (𝒫 𝑋 ↾t 𝑦) ∈ 𝐴)) → (𝒫 𝑋 ↾t {𝑥}) = 𝒫 {𝑥})
19	13, 18	eqtrd 2775	. . . . . . 7 ⊢ ((((𝑋 ∈ 𝑉 ∧ 𝒫 𝑋 ∈ Locally 𝐴) ∧ 𝑥 ∈ 𝑋) ∧ (𝑦 ⊆ {𝑥} ∧ 𝑥 ∈ 𝑦 ∧ (𝒫 𝑋 ↾t 𝑦) ∈ 𝐴)) → (𝒫 𝑋 ↾t 𝑦) = 𝒫 {𝑥})
20		simpr3 1203	. . . . . . 7 ⊢ ((((𝑋 ∈ 𝑉 ∧ 𝒫 𝑋 ∈ Locally 𝐴) ∧ 𝑥 ∈ 𝑋) ∧ (𝑦 ⊆ {𝑥} ∧ 𝑥 ∈ 𝑦 ∧ (𝒫 𝑋 ↾t 𝑦) ∈ 𝐴)) → (𝒫 𝑋 ↾t 𝑦) ∈ 𝐴)
21	19, 20	eqeltrrd 2841	. . . . . 6 ⊢ ((((𝑋 ∈ 𝑉 ∧ 𝒫 𝑋 ∈ Locally 𝐴) ∧ 𝑥 ∈ 𝑋) ∧ (𝑦 ⊆ {𝑥} ∧ 𝑥 ∈ 𝑦 ∧ (𝒫 𝑋 ↾t 𝑦) ∈ 𝐴)) → 𝒫 {𝑥} ∈ 𝐴)
22	21	ex 413	. . . . 5 ⊢ (((𝑋 ∈ 𝑉 ∧ 𝒫 𝑋 ∈ Locally 𝐴) ∧ 𝑥 ∈ 𝑋) → ((𝑦 ⊆ {𝑥} ∧ 𝑥 ∈ 𝑦 ∧ (𝒫 𝑋 ↾t 𝑦) ∈ 𝐴) → 𝒫 {𝑥} ∈ 𝐴))
23	22	rexlimdvw 3146	. . . 4 ⊢ (((𝑋 ∈ 𝑉 ∧ 𝒫 𝑋 ∈ Locally 𝐴) ∧ 𝑥 ∈ 𝑋) → (∃𝑦 ∈ 𝒫 𝑋(𝑦 ⊆ {𝑥} ∧ 𝑥 ∈ 𝑦 ∧ (𝒫 𝑋 ↾t 𝑦) ∈ 𝐴) → 𝒫 {𝑥} ∈ 𝐴))
24	8, 23	mpd 15	. . 3 ⊢ (((𝑋 ∈ 𝑉 ∧ 𝒫 𝑋 ∈ Locally 𝐴) ∧ 𝑥 ∈ 𝑋) → 𝒫 {𝑥} ∈ 𝐴)
25	24	ralrimiva 3132	. 2 ⊢ ((𝑋 ∈ 𝑉 ∧ 𝒫 𝑋 ∈ Locally 𝐴) → ∀𝑥 ∈ 𝑋 𝒫 {𝑥} ∈ 𝐴)
26		distop 22985	. . . 4 ⊢ (𝑋 ∈ 𝑉 → 𝒫 𝑋 ∈ Top)
27	26	adantr 481	. . 3 ⊢ ((𝑋 ∈ 𝑉 ∧ ∀𝑥 ∈ 𝑋 𝒫 {𝑥} ∈ 𝐴) → 𝒫 𝑋 ∈ Top)
28		elpwi 4543	. . . . . . . . 9 ⊢ (𝑦 ∈ 𝒫 𝑋 → 𝑦 ⊆ 𝑋)
29	28	adantl 482	. . . . . . . 8 ⊢ ((𝑋 ∈ 𝑉 ∧ 𝑦 ∈ 𝒫 𝑋) → 𝑦 ⊆ 𝑋)
30		ssralv 3990	. . . . . . . 8 ⊢ (𝑦 ⊆ 𝑋 → (∀𝑥 ∈ 𝑋 𝒫 {𝑥} ∈ 𝐴 → ∀𝑥 ∈ 𝑦 𝒫 {𝑥} ∈ 𝐴))
31	29, 30	syl 17	. . . . . . 7 ⊢ ((𝑋 ∈ 𝑉 ∧ 𝑦 ∈ 𝒫 𝑋) → (∀𝑥 ∈ 𝑋 𝒫 {𝑥} ∈ 𝐴 → ∀𝑥 ∈ 𝑦 𝒫 {𝑥} ∈ 𝐴))
32		simprl 776	. . . . . . . . . . . . . 14 ⊢ (((𝑋 ∈ 𝑉 ∧ 𝑦 ∈ 𝒫 𝑋) ∧ (𝑥 ∈ 𝑦 ∧ 𝒫 {𝑥} ∈ 𝐴)) → 𝑥 ∈ 𝑦)
33	32	snssd 4725	. . . . . . . . . . . . 13 ⊢ (((𝑋 ∈ 𝑉 ∧ 𝑦 ∈ 𝒫 𝑋) ∧ (𝑥 ∈ 𝑦 ∧ 𝒫 {𝑥} ∈ 𝐴)) → {𝑥} ⊆ 𝑦)
34	29	adantr 481	. . . . . . . . . . . . 13 ⊢ (((𝑋 ∈ 𝑉 ∧ 𝑦 ∈ 𝒫 𝑋) ∧ (𝑥 ∈ 𝑦 ∧ 𝒫 {𝑥} ∈ 𝐴)) → 𝑦 ⊆ 𝑋)
35	33, 34	sstrd 3932	. . . . . . . . . . . 12 ⊢ (((𝑋 ∈ 𝑉 ∧ 𝑦 ∈ 𝒫 𝑋) ∧ (𝑥 ∈ 𝑦 ∧ 𝒫 {𝑥} ∈ 𝐴)) → {𝑥} ⊆ 𝑋)
36		vsnex 5371	. . . . . . . . . . . . 13 ⊢ {𝑥} ∈ V
37	36	elpw 4540	. . . . . . . . . . . 12 ⊢ ({𝑥} ∈ 𝒫 𝑋 ↔ {𝑥} ⊆ 𝑋)
38	35, 37	sylibr 235	. . . . . . . . . . 11 ⊢ (((𝑋 ∈ 𝑉 ∧ 𝑦 ∈ 𝒫 𝑋) ∧ (𝑥 ∈ 𝑦 ∧ 𝒫 {𝑥} ∈ 𝐴)) → {𝑥} ∈ 𝒫 𝑋)
39	36	elpw 4540	. . . . . . . . . . . 12 ⊢ ({𝑥} ∈ 𝒫 𝑦 ↔ {𝑥} ⊆ 𝑦)
40	33, 39	sylibr 235	. . . . . . . . . . 11 ⊢ (((𝑋 ∈ 𝑉 ∧ 𝑦 ∈ 𝒫 𝑋) ∧ (𝑥 ∈ 𝑦 ∧ 𝒫 {𝑥} ∈ 𝐴)) → {𝑥} ∈ 𝒫 𝑦)
41	38, 40	elind 4136	. . . . . . . . . 10 ⊢ (((𝑋 ∈ 𝑉 ∧ 𝑦 ∈ 𝒫 𝑋) ∧ (𝑥 ∈ 𝑦 ∧ 𝒫 {𝑥} ∈ 𝐴)) → {𝑥} ∈ (𝒫 𝑋 ∩ 𝒫 𝑦))
42		snidg 4599	. . . . . . . . . . 11 ⊢ (𝑥 ∈ 𝑦 → 𝑥 ∈ {𝑥})
43	42	ad2antrl 734	. . . . . . . . . 10 ⊢ (((𝑋 ∈ 𝑉 ∧ 𝑦 ∈ 𝒫 𝑋) ∧ (𝑥 ∈ 𝑦 ∧ 𝒫 {𝑥} ∈ 𝐴)) → 𝑥 ∈ {𝑥})
44		simpll 772	. . . . . . . . . . . 12 ⊢ (((𝑋 ∈ 𝑉 ∧ 𝑦 ∈ 𝒫 𝑋) ∧ (𝑥 ∈ 𝑦 ∧ 𝒫 {𝑥} ∈ 𝐴)) → 𝑋 ∈ 𝑉)
45	44, 35, 17	syl2anc 590	. . . . . . . . . . 11 ⊢ (((𝑋 ∈ 𝑉 ∧ 𝑦 ∈ 𝒫 𝑋) ∧ (𝑥 ∈ 𝑦 ∧ 𝒫 {𝑥} ∈ 𝐴)) → (𝒫 𝑋 ↾t {𝑥}) = 𝒫 {𝑥})
46		simprr 778	. . . . . . . . . . 11 ⊢ (((𝑋 ∈ 𝑉 ∧ 𝑦 ∈ 𝒫 𝑋) ∧ (𝑥 ∈ 𝑦 ∧ 𝒫 {𝑥} ∈ 𝐴)) → 𝒫 {𝑥} ∈ 𝐴)
47	45, 46	eqeltrd 2840	. . . . . . . . . 10 ⊢ (((𝑋 ∈ 𝑉 ∧ 𝑦 ∈ 𝒫 𝑋) ∧ (𝑥 ∈ 𝑦 ∧ 𝒫 {𝑥} ∈ 𝐴)) → (𝒫 𝑋 ↾t {𝑥}) ∈ 𝐴)
48		eleq2 2829	. . . . . . . . . . . 12 ⊢ (𝑢 = {𝑥} → (𝑥 ∈ 𝑢 ↔ 𝑥 ∈ {𝑥}))
49		oveq2 7371	. . . . . . . . . . . . 13 ⊢ (𝑢 = {𝑥} → (𝒫 𝑋 ↾t 𝑢) = (𝒫 𝑋 ↾t {𝑥}))
50	49	eleq1d 2825	. . . . . . . . . . . 12 ⊢ (𝑢 = {𝑥} → ((𝒫 𝑋 ↾t 𝑢) ∈ 𝐴 ↔ (𝒫 𝑋 ↾t {𝑥}) ∈ 𝐴))
51	48, 50	anbi12d 638	. . . . . . . . . . 11 ⊢ (𝑢 = {𝑥} → ((𝑥 ∈ 𝑢 ∧ (𝒫 𝑋 ↾t 𝑢) ∈ 𝐴) ↔ (𝑥 ∈ {𝑥} ∧ (𝒫 𝑋 ↾t {𝑥}) ∈ 𝐴)))
52	51	rspcev 3567	. . . . . . . . . 10 ⊢ (({𝑥} ∈ (𝒫 𝑋 ∩ 𝒫 𝑦) ∧ (𝑥 ∈ {𝑥} ∧ (𝒫 𝑋 ↾t {𝑥}) ∈ 𝐴)) → ∃𝑢 ∈ (𝒫 𝑋 ∩ 𝒫 𝑦)(𝑥 ∈ 𝑢 ∧ (𝒫 𝑋 ↾t 𝑢) ∈ 𝐴))
53	41, 43, 47, 52	syl12anc 842	. . . . . . . . 9 ⊢ (((𝑋 ∈ 𝑉 ∧ 𝑦 ∈ 𝒫 𝑋) ∧ (𝑥 ∈ 𝑦 ∧ 𝒫 {𝑥} ∈ 𝐴)) → ∃𝑢 ∈ (𝒫 𝑋 ∩ 𝒫 𝑦)(𝑥 ∈ 𝑢 ∧ (𝒫 𝑋 ↾t 𝑢) ∈ 𝐴))
54	53	expr 457	. . . . . . . 8 ⊢ (((𝑋 ∈ 𝑉 ∧ 𝑦 ∈ 𝒫 𝑋) ∧ 𝑥 ∈ 𝑦) → (𝒫 {𝑥} ∈ 𝐴 → ∃𝑢 ∈ (𝒫 𝑋 ∩ 𝒫 𝑦)(𝑥 ∈ 𝑢 ∧ (𝒫 𝑋 ↾t 𝑢) ∈ 𝐴)))
55	54	ralimdva 3152	. . . . . . 7 ⊢ ((𝑋 ∈ 𝑉 ∧ 𝑦 ∈ 𝒫 𝑋) → (∀𝑥 ∈ 𝑦 𝒫 {𝑥} ∈ 𝐴 → ∀𝑥 ∈ 𝑦 ∃𝑢 ∈ (𝒫 𝑋 ∩ 𝒫 𝑦)(𝑥 ∈ 𝑢 ∧ (𝒫 𝑋 ↾t 𝑢) ∈ 𝐴)))
56	31, 55	syld 47	. . . . . 6 ⊢ ((𝑋 ∈ 𝑉 ∧ 𝑦 ∈ 𝒫 𝑋) → (∀𝑥 ∈ 𝑋 𝒫 {𝑥} ∈ 𝐴 → ∀𝑥 ∈ 𝑦 ∃𝑢 ∈ (𝒫 𝑋 ∩ 𝒫 𝑦)(𝑥 ∈ 𝑢 ∧ (𝒫 𝑋 ↾t 𝑢) ∈ 𝐴)))
57	56	imp 407	. . . . 5 ⊢ (((𝑋 ∈ 𝑉 ∧ 𝑦 ∈ 𝒫 𝑋) ∧ ∀𝑥 ∈ 𝑋 𝒫 {𝑥} ∈ 𝐴) → ∀𝑥 ∈ 𝑦 ∃𝑢 ∈ (𝒫 𝑋 ∩ 𝒫 𝑦)(𝑥 ∈ 𝑢 ∧ (𝒫 𝑋 ↾t 𝑢) ∈ 𝐴))
58	57	an32s 658	. . . 4 ⊢ (((𝑋 ∈ 𝑉 ∧ ∀𝑥 ∈ 𝑋 𝒫 {𝑥} ∈ 𝐴) ∧ 𝑦 ∈ 𝒫 𝑋) → ∀𝑥 ∈ 𝑦 ∃𝑢 ∈ (𝒫 𝑋 ∩ 𝒫 𝑦)(𝑥 ∈ 𝑢 ∧ (𝒫 𝑋 ↾t 𝑢) ∈ 𝐴))
59	58	ralrimiva 3132	. . 3 ⊢ ((𝑋 ∈ 𝑉 ∧ ∀𝑥 ∈ 𝑋 𝒫 {𝑥} ∈ 𝐴) → ∀𝑦 ∈ 𝒫 𝑋∀𝑥 ∈ 𝑦 ∃𝑢 ∈ (𝒫 𝑋 ∩ 𝒫 𝑦)(𝑥 ∈ 𝑢 ∧ (𝒫 𝑋 ↾t 𝑢) ∈ 𝐴))
60		islly 23458	. . 3 ⊢ (𝒫 𝑋 ∈ Locally 𝐴 ↔ (𝒫 𝑋 ∈ Top ∧ ∀𝑦 ∈ 𝒫 𝑋∀𝑥 ∈ 𝑦 ∃𝑢 ∈ (𝒫 𝑋 ∩ 𝒫 𝑦)(𝑥 ∈ 𝑢 ∧ (𝒫 𝑋 ↾t 𝑢) ∈ 𝐴)))
61	27, 59, 60	sylanbrc 589	. 2 ⊢ ((𝑋 ∈ 𝑉 ∧ ∀𝑥 ∈ 𝑋 𝒫 {𝑥} ∈ 𝐴) → 𝒫 𝑋 ∈ Locally 𝐴)
62	25, 61	impbida 806	1 ⊢ (𝑋 ∈ 𝑉 → (𝒫 𝑋 ∈ Locally 𝐴 ↔ ∀𝑥 ∈ 𝑋 𝒫 {𝑥} ∈ 𝐴))

Syntax hints:   → wi 4   ↔ wb 207   ∧ wa 396   ∧ w3a 1092   = wceq 1547   ∈ wcel 2119  ∀wral 3054  ∃wrex 3064   ∩ cin 3889   ⊆ wss 3890  𝒫 cpw 4536  {csn 4562  (class class class)co 7363   ↾_t crest 17381  Topctop 22883  Locally clly 23454

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1802  ax-4 1816  ax-5 1917  ax-6 1974  ax-7 2015  ax-8 2121  ax-9 2129  ax-10 2152  ax-11 2168  ax-12 2189  ax-ext 2712  ax-rep 5206  ax-sep 5225  ax-nul 5235  ax-pow 5301  ax-pr 5369  ax-un 7685

This theorem depends on definitions:  df-bi 208  df-an 397  df-or 854  df-3or 1093  df-3an 1094  df-tru 1550  df-fal 1560  df-ex 1787  df-nf 1791  df-sb 2074  df-mo 2543  df-eu 2573  df-clab 2719  df-cleq 2732  df-clel 2815  df-nfc 2889  df-ne 2936  df-ral 3055  df-rex 3065  df-reu 3346  df-rab 3393  df-v 3434  df-sbc 3731  df-csb 3839  df-dif 3893  df-un 3895  df-in 3897  df-ss 3907  df-pss 3910  df-nul 4269  df-if 4462  df-pw 4538  df-sn 4563  df-pr 4565  df-op 4569  df-uni 4846  df-int 4885  df-iun 4930  df-br 5080  df-opab 5142  df-mpt 5161  df-tr 5187  df-id 5520  df-eprel 5525  df-po 5533  df-so 5534  df-fr 5578  df-we 5580  df-xp 5631  df-rel 5632  df-cnv 5633  df-co 5634  df-dm 5635  df-rn 5636  df-res 5637  df-ima 5638  df-ord 6320  df-on 6321  df-lim 6322  df-suc 6323  df-iota 6448  df-fun 6494  df-fn 6495  df-f 6496  df-f1 6497  df-fo 6498  df-f1o 6499  df-fv 6500  df-ov 7366  df-oprab 7367  df-mpo 7368  df-om 7814  df-1st 7938  df-2nd 7939  df-en 8891  df-fin 8894  df-fi 9321  df-rest 17383  df-topgen 17404  df-top 22884  df-topon 22901  df-bases 22936  df-lly 23456

This theorem is referenced by:  disllycmp  23488  dis1stc  23489