Theorem cmetss 25244

Description: A subspace of a complete metric space is complete iff it is closed in the parent space. Theorem 1.4-7 of [Kreyszig] p. 30. (Contributed by NM, 28-Jan-2008.) (Revised by Mario Carneiro, 15-Oct-2015.) (Proof shortened by AV, 9-Oct-2022.)

Hypothesis

Ref	Expression
metsscmetcld.j	⊢ 𝐽 = (MetOpen‘𝐷)

Assertion

Ref	Expression
cmetss	⊢ (𝐷 ∈ (CMet‘𝑋) → ((𝐷 ↾ (𝑌 × 𝑌)) ∈ (CMet‘𝑌) ↔ 𝑌 ∈ (Clsd‘𝐽)))

Proof of Theorem cmetss

Dummy variable 𝑓 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		cmetmet 25214	. . 3 ⊢ (𝐷 ∈ (CMet‘𝑋) → 𝐷 ∈ (Met‘𝑋))
2		metsscmetcld.j	. . . 4 ⊢ 𝐽 = (MetOpen‘𝐷)
3	2	metsscmetcld 25243	. . 3 ⊢ ((𝐷 ∈ (Met‘𝑋) ∧ (𝐷 ↾ (𝑌 × 𝑌)) ∈ (CMet‘𝑌)) → 𝑌 ∈ (Clsd‘𝐽))
4	1, 3	sylan 580	. 2 ⊢ ((𝐷 ∈ (CMet‘𝑋) ∧ (𝐷 ↾ (𝑌 × 𝑌)) ∈ (CMet‘𝑌)) → 𝑌 ∈ (Clsd‘𝐽))
5	1	adantr 480	. . . 4 ⊢ ((𝐷 ∈ (CMet‘𝑋) ∧ 𝑌 ∈ (Clsd‘𝐽)) → 𝐷 ∈ (Met‘𝑋))
6		eqid 2733	. . . . . . 7 ⊢ ∪ 𝐽 = ∪ 𝐽
7	6	cldss 22945	. . . . . 6 ⊢ (𝑌 ∈ (Clsd‘𝐽) → 𝑌 ⊆ ∪ 𝐽)
8	7	adantl 481	. . . . 5 ⊢ ((𝐷 ∈ (CMet‘𝑋) ∧ 𝑌 ∈ (Clsd‘𝐽)) → 𝑌 ⊆ ∪ 𝐽)
9		metxmet 24250	. . . . . 6 ⊢ (𝐷 ∈ (Met‘𝑋) → 𝐷 ∈ (∞Met‘𝑋))
10	2	mopnuni 24357	. . . . . 6 ⊢ (𝐷 ∈ (∞Met‘𝑋) → 𝑋 = ∪ 𝐽)
11	5, 9, 10	3syl 18	. . . . 5 ⊢ ((𝐷 ∈ (CMet‘𝑋) ∧ 𝑌 ∈ (Clsd‘𝐽)) → 𝑋 = ∪ 𝐽)
12	8, 11	sseqtrrd 3968	. . . 4 ⊢ ((𝐷 ∈ (CMet‘𝑋) ∧ 𝑌 ∈ (Clsd‘𝐽)) → 𝑌 ⊆ 𝑋)
13		metres2 24279	. . . 4 ⊢ ((𝐷 ∈ (Met‘𝑋) ∧ 𝑌 ⊆ 𝑋) → (𝐷 ↾ (𝑌 × 𝑌)) ∈ (Met‘𝑌))
14	5, 12, 13	syl2anc 584	. . 3 ⊢ ((𝐷 ∈ (CMet‘𝑋) ∧ 𝑌 ∈ (Clsd‘𝐽)) → (𝐷 ↾ (𝑌 × 𝑌)) ∈ (Met‘𝑌))
15	1, 9	syl 17	. . . . . . . . . 10 ⊢ (𝐷 ∈ (CMet‘𝑋) → 𝐷 ∈ (∞Met‘𝑋))
16	15	ad2antrr 726	. . . . . . . . 9 ⊢ (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑌 ∈ (Clsd‘𝐽)) ∧ 𝑓 ∈ (CauFil‘(𝐷 ↾ (𝑌 × 𝑌)))) → 𝐷 ∈ (∞Met‘𝑋))
17	12	adantr 480	. . . . . . . . 9 ⊢ (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑌 ∈ (Clsd‘𝐽)) ∧ 𝑓 ∈ (CauFil‘(𝐷 ↾ (𝑌 × 𝑌)))) → 𝑌 ⊆ 𝑋)
18		eqid 2733	. . . . . . . . . 10 ⊢ (𝐷 ↾ (𝑌 × 𝑌)) = (𝐷 ↾ (𝑌 × 𝑌))
19		eqid 2733	. . . . . . . . . 10 ⊢ (MetOpen‘(𝐷 ↾ (𝑌 × 𝑌))) = (MetOpen‘(𝐷 ↾ (𝑌 × 𝑌)))
20	18, 2, 19	metrest 24440	. . . . . . . . 9 ⊢ ((𝐷 ∈ (∞Met‘𝑋) ∧ 𝑌 ⊆ 𝑋) → (𝐽 ↾t 𝑌) = (MetOpen‘(𝐷 ↾ (𝑌 × 𝑌))))
21	16, 17, 20	syl2anc 584	. . . . . . . 8 ⊢ (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑌 ∈ (Clsd‘𝐽)) ∧ 𝑓 ∈ (CauFil‘(𝐷 ↾ (𝑌 × 𝑌)))) → (𝐽 ↾t 𝑌) = (MetOpen‘(𝐷 ↾ (𝑌 × 𝑌))))
22	21	eqcomd 2739	. . . . . . 7 ⊢ (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑌 ∈ (Clsd‘𝐽)) ∧ 𝑓 ∈ (CauFil‘(𝐷 ↾ (𝑌 × 𝑌)))) → (MetOpen‘(𝐷 ↾ (𝑌 × 𝑌))) = (𝐽 ↾t 𝑌))
23		metxmet 24250	. . . . . . . . . . 11 ⊢ ((𝐷 ↾ (𝑌 × 𝑌)) ∈ (Met‘𝑌) → (𝐷 ↾ (𝑌 × 𝑌)) ∈ (∞Met‘𝑌))
24	14, 23	syl 17	. . . . . . . . . 10 ⊢ ((𝐷 ∈ (CMet‘𝑋) ∧ 𝑌 ∈ (Clsd‘𝐽)) → (𝐷 ↾ (𝑌 × 𝑌)) ∈ (∞Met‘𝑌))
25		cfilfil 25195	. . . . . . . . . 10 ⊢ (((𝐷 ↾ (𝑌 × 𝑌)) ∈ (∞Met‘𝑌) ∧ 𝑓 ∈ (CauFil‘(𝐷 ↾ (𝑌 × 𝑌)))) → 𝑓 ∈ (Fil‘𝑌))
26	24, 25	sylan 580	. . . . . . . . 9 ⊢ (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑌 ∈ (Clsd‘𝐽)) ∧ 𝑓 ∈ (CauFil‘(𝐷 ↾ (𝑌 × 𝑌)))) → 𝑓 ∈ (Fil‘𝑌))
27		elfvdm 6862	. . . . . . . . . 10 ⊢ (𝐷 ∈ (CMet‘𝑋) → 𝑋 ∈ dom CMet)
28	27	ad2antrr 726	. . . . . . . . 9 ⊢ (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑌 ∈ (Clsd‘𝐽)) ∧ 𝑓 ∈ (CauFil‘(𝐷 ↾ (𝑌 × 𝑌)))) → 𝑋 ∈ dom CMet)
29		trfg 23807	. . . . . . . . 9 ⊢ ((𝑓 ∈ (Fil‘𝑌) ∧ 𝑌 ⊆ 𝑋 ∧ 𝑋 ∈ dom CMet) → ((𝑋filGen𝑓) ↾t 𝑌) = 𝑓)
30	26, 17, 28, 29	syl3anc 1373	. . . . . . . 8 ⊢ (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑌 ∈ (Clsd‘𝐽)) ∧ 𝑓 ∈ (CauFil‘(𝐷 ↾ (𝑌 × 𝑌)))) → ((𝑋filGen𝑓) ↾t 𝑌) = 𝑓)
31	30	eqcomd 2739	. . . . . . 7 ⊢ (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑌 ∈ (Clsd‘𝐽)) ∧ 𝑓 ∈ (CauFil‘(𝐷 ↾ (𝑌 × 𝑌)))) → 𝑓 = ((𝑋filGen𝑓) ↾t 𝑌))
32	22, 31	oveq12d 7370	. . . . . 6 ⊢ (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑌 ∈ (Clsd‘𝐽)) ∧ 𝑓 ∈ (CauFil‘(𝐷 ↾ (𝑌 × 𝑌)))) → ((MetOpen‘(𝐷 ↾ (𝑌 × 𝑌))) fLim 𝑓) = ((𝐽 ↾t 𝑌) fLim ((𝑋filGen𝑓) ↾t 𝑌)))
33	2	mopntopon 24355	. . . . . . . 8 ⊢ (𝐷 ∈ (∞Met‘𝑋) → 𝐽 ∈ (TopOn‘𝑋))
34	16, 33	syl 17	. . . . . . 7 ⊢ (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑌 ∈ (Clsd‘𝐽)) ∧ 𝑓 ∈ (CauFil‘(𝐷 ↾ (𝑌 × 𝑌)))) → 𝐽 ∈ (TopOn‘𝑋))
35		filfbas 23764	. . . . . . . . . 10 ⊢ (𝑓 ∈ (Fil‘𝑌) → 𝑓 ∈ (fBas‘𝑌))
36	26, 35	syl 17	. . . . . . . . 9 ⊢ (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑌 ∈ (Clsd‘𝐽)) ∧ 𝑓 ∈ (CauFil‘(𝐷 ↾ (𝑌 × 𝑌)))) → 𝑓 ∈ (fBas‘𝑌))
37		filsspw 23767	. . . . . . . . . . 11 ⊢ (𝑓 ∈ (Fil‘𝑌) → 𝑓 ⊆ 𝒫 𝑌)
38	26, 37	syl 17	. . . . . . . . . 10 ⊢ (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑌 ∈ (Clsd‘𝐽)) ∧ 𝑓 ∈ (CauFil‘(𝐷 ↾ (𝑌 × 𝑌)))) → 𝑓 ⊆ 𝒫 𝑌)
39	17	sspwd 4562	. . . . . . . . . 10 ⊢ (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑌 ∈ (Clsd‘𝐽)) ∧ 𝑓 ∈ (CauFil‘(𝐷 ↾ (𝑌 × 𝑌)))) → 𝒫 𝑌 ⊆ 𝒫 𝑋)
40	38, 39	sstrd 3941	. . . . . . . . 9 ⊢ (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑌 ∈ (Clsd‘𝐽)) ∧ 𝑓 ∈ (CauFil‘(𝐷 ↾ (𝑌 × 𝑌)))) → 𝑓 ⊆ 𝒫 𝑋)
41		fbasweak 23781	. . . . . . . . 9 ⊢ ((𝑓 ∈ (fBas‘𝑌) ∧ 𝑓 ⊆ 𝒫 𝑋 ∧ 𝑋 ∈ dom CMet) → 𝑓 ∈ (fBas‘𝑋))
42	36, 40, 28, 41	syl3anc 1373	. . . . . . . 8 ⊢ (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑌 ∈ (Clsd‘𝐽)) ∧ 𝑓 ∈ (CauFil‘(𝐷 ↾ (𝑌 × 𝑌)))) → 𝑓 ∈ (fBas‘𝑋))
43		fgcl 23794	. . . . . . . 8 ⊢ (𝑓 ∈ (fBas‘𝑋) → (𝑋filGen𝑓) ∈ (Fil‘𝑋))
44	42, 43	syl 17	. . . . . . 7 ⊢ (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑌 ∈ (Clsd‘𝐽)) ∧ 𝑓 ∈ (CauFil‘(𝐷 ↾ (𝑌 × 𝑌)))) → (𝑋filGen𝑓) ∈ (Fil‘𝑋))
45		ssfg 23788	. . . . . . . . 9 ⊢ (𝑓 ∈ (fBas‘𝑋) → 𝑓 ⊆ (𝑋filGen𝑓))
46	42, 45	syl 17	. . . . . . . 8 ⊢ (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑌 ∈ (Clsd‘𝐽)) ∧ 𝑓 ∈ (CauFil‘(𝐷 ↾ (𝑌 × 𝑌)))) → 𝑓 ⊆ (𝑋filGen𝑓))
47		filtop 23771	. . . . . . . . 9 ⊢ (𝑓 ∈ (Fil‘𝑌) → 𝑌 ∈ 𝑓)
48	26, 47	syl 17	. . . . . . . 8 ⊢ (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑌 ∈ (Clsd‘𝐽)) ∧ 𝑓 ∈ (CauFil‘(𝐷 ↾ (𝑌 × 𝑌)))) → 𝑌 ∈ 𝑓)
49	46, 48	sseldd 3931	. . . . . . 7 ⊢ (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑌 ∈ (Clsd‘𝐽)) ∧ 𝑓 ∈ (CauFil‘(𝐷 ↾ (𝑌 × 𝑌)))) → 𝑌 ∈ (𝑋filGen𝑓))
50		flimrest 23899	. . . . . . 7 ⊢ ((𝐽 ∈ (TopOn‘𝑋) ∧ (𝑋filGen𝑓) ∈ (Fil‘𝑋) ∧ 𝑌 ∈ (𝑋filGen𝑓)) → ((𝐽 ↾t 𝑌) fLim ((𝑋filGen𝑓) ↾t 𝑌)) = ((𝐽 fLim (𝑋filGen𝑓)) ∩ 𝑌))
51	34, 44, 49, 50	syl3anc 1373	. . . . . 6 ⊢ (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑌 ∈ (Clsd‘𝐽)) ∧ 𝑓 ∈ (CauFil‘(𝐷 ↾ (𝑌 × 𝑌)))) → ((𝐽 ↾t 𝑌) fLim ((𝑋filGen𝑓) ↾t 𝑌)) = ((𝐽 fLim (𝑋filGen𝑓)) ∩ 𝑌))
52		flimclsi 23894	. . . . . . . . 9 ⊢ (𝑌 ∈ (𝑋filGen𝑓) → (𝐽 fLim (𝑋filGen𝑓)) ⊆ ((cls‘𝐽)‘𝑌))
53	49, 52	syl 17	. . . . . . . 8 ⊢ (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑌 ∈ (Clsd‘𝐽)) ∧ 𝑓 ∈ (CauFil‘(𝐷 ↾ (𝑌 × 𝑌)))) → (𝐽 fLim (𝑋filGen𝑓)) ⊆ ((cls‘𝐽)‘𝑌))
54		cldcls 22958	. . . . . . . . 9 ⊢ (𝑌 ∈ (Clsd‘𝐽) → ((cls‘𝐽)‘𝑌) = 𝑌)
55	54	ad2antlr 727	. . . . . . . 8 ⊢ (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑌 ∈ (Clsd‘𝐽)) ∧ 𝑓 ∈ (CauFil‘(𝐷 ↾ (𝑌 × 𝑌)))) → ((cls‘𝐽)‘𝑌) = 𝑌)
56	53, 55	sseqtrd 3967	. . . . . . 7 ⊢ (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑌 ∈ (Clsd‘𝐽)) ∧ 𝑓 ∈ (CauFil‘(𝐷 ↾ (𝑌 × 𝑌)))) → (𝐽 fLim (𝑋filGen𝑓)) ⊆ 𝑌)
57		dfss2 3916	. . . . . . 7 ⊢ ((𝐽 fLim (𝑋filGen𝑓)) ⊆ 𝑌 ↔ ((𝐽 fLim (𝑋filGen𝑓)) ∩ 𝑌) = (𝐽 fLim (𝑋filGen𝑓)))
58	56, 57	sylib 218	. . . . . 6 ⊢ (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑌 ∈ (Clsd‘𝐽)) ∧ 𝑓 ∈ (CauFil‘(𝐷 ↾ (𝑌 × 𝑌)))) → ((𝐽 fLim (𝑋filGen𝑓)) ∩ 𝑌) = (𝐽 fLim (𝑋filGen𝑓)))
59	32, 51, 58	3eqtrd 2772	. . . . 5 ⊢ (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑌 ∈ (Clsd‘𝐽)) ∧ 𝑓 ∈ (CauFil‘(𝐷 ↾ (𝑌 × 𝑌)))) → ((MetOpen‘(𝐷 ↾ (𝑌 × 𝑌))) fLim 𝑓) = (𝐽 fLim (𝑋filGen𝑓)))
60		simpll 766	. . . . . 6 ⊢ (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑌 ∈ (Clsd‘𝐽)) ∧ 𝑓 ∈ (CauFil‘(𝐷 ↾ (𝑌 × 𝑌)))) → 𝐷 ∈ (CMet‘𝑋))
61	5, 9	syl 17	. . . . . . 7 ⊢ ((𝐷 ∈ (CMet‘𝑋) ∧ 𝑌 ∈ (Clsd‘𝐽)) → 𝐷 ∈ (∞Met‘𝑋))
62		cfilresi 25223	. . . . . . 7 ⊢ ((𝐷 ∈ (∞Met‘𝑋) ∧ 𝑓 ∈ (CauFil‘(𝐷 ↾ (𝑌 × 𝑌)))) → (𝑋filGen𝑓) ∈ (CauFil‘𝐷))
63	61, 62	sylan 580	. . . . . 6 ⊢ (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑌 ∈ (Clsd‘𝐽)) ∧ 𝑓 ∈ (CauFil‘(𝐷 ↾ (𝑌 × 𝑌)))) → (𝑋filGen𝑓) ∈ (CauFil‘𝐷))
64	2	cmetcvg 25213	. . . . . 6 ⊢ ((𝐷 ∈ (CMet‘𝑋) ∧ (𝑋filGen𝑓) ∈ (CauFil‘𝐷)) → (𝐽 fLim (𝑋filGen𝑓)) ≠ ∅)
65	60, 63, 64	syl2anc 584	. . . . 5 ⊢ (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑌 ∈ (Clsd‘𝐽)) ∧ 𝑓 ∈ (CauFil‘(𝐷 ↾ (𝑌 × 𝑌)))) → (𝐽 fLim (𝑋filGen𝑓)) ≠ ∅)
66	59, 65	eqnetrd 2996	. . . 4 ⊢ (((𝐷 ∈ (CMet‘𝑋) ∧ 𝑌 ∈ (Clsd‘𝐽)) ∧ 𝑓 ∈ (CauFil‘(𝐷 ↾ (𝑌 × 𝑌)))) → ((MetOpen‘(𝐷 ↾ (𝑌 × 𝑌))) fLim 𝑓) ≠ ∅)
67	66	ralrimiva 3125	. . 3 ⊢ ((𝐷 ∈ (CMet‘𝑋) ∧ 𝑌 ∈ (Clsd‘𝐽)) → ∀𝑓 ∈ (CauFil‘(𝐷 ↾ (𝑌 × 𝑌)))((MetOpen‘(𝐷 ↾ (𝑌 × 𝑌))) fLim 𝑓) ≠ ∅)
68	19	iscmet 25212	. . 3 ⊢ ((𝐷 ↾ (𝑌 × 𝑌)) ∈ (CMet‘𝑌) ↔ ((𝐷 ↾ (𝑌 × 𝑌)) ∈ (Met‘𝑌) ∧ ∀𝑓 ∈ (CauFil‘(𝐷 ↾ (𝑌 × 𝑌)))((MetOpen‘(𝐷 ↾ (𝑌 × 𝑌))) fLim 𝑓) ≠ ∅))
69	14, 67, 68	sylanbrc 583	. 2 ⊢ ((𝐷 ∈ (CMet‘𝑋) ∧ 𝑌 ∈ (Clsd‘𝐽)) → (𝐷 ↾ (𝑌 × 𝑌)) ∈ (CMet‘𝑌))
70	4, 69	impbida 800	1 ⊢ (𝐷 ∈ (CMet‘𝑋) → ((𝐷 ↾ (𝑌 × 𝑌)) ∈ (CMet‘𝑌) ↔ 𝑌 ∈ (Clsd‘𝐽)))

Syntax hints:   → wi 4   ↔ wb 206   ∧ wa 395   = wceq 1541   ∈ wcel 2113   ≠ wne 2929  ∀wral 3048   ∩ cin 3897   ⊆ wss 3898  ∅c0 4282  𝒫 cpw 4549  ∪ cuni 4858   × cxp 5617  dom cdm 5619   ↾ cres 5621  ‘cfv 6486  (class class class)co 7352   ↾_t crest 17326  ∞Metcxmet 21278  Metcmet 21279  fBascfbas 21281  filGencfg 21282  MetOpencmopn 21283  TopOnctopon 22826  Clsdccld 22932  clsccl 22934  Filcfil 23761   fLim cflim 23850  CauFilccfil 25180  CMetccmet 25182

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1968  ax-7 2009  ax-8 2115  ax-9 2123  ax-10 2146  ax-11 2162  ax-12 2182  ax-ext 2705  ax-rep 5219  ax-sep 5236  ax-nul 5246  ax-pow 5305  ax-pr 5372  ax-un 7674  ax-cnex 11069  ax-resscn 11070  ax-1cn 11071  ax-icn 11072  ax-addcl 11073  ax-addrcl 11074  ax-mulcl 11075  ax-mulrcl 11076  ax-mulcom 11077  ax-addass 11078  ax-mulass 11079  ax-distr 11080  ax-i2m1 11081  ax-1ne0 11082  ax-1rid 11083  ax-rnegex 11084  ax-rrecex 11085  ax-cnre 11086  ax-pre-lttri 11087  ax-pre-lttrn 11088  ax-pre-ltadd 11089  ax-pre-mulgt0 11090  ax-pre-sup 11091

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3or 1087  df-3an 1088  df-tru 1544  df-fal 1554  df-ex 1781  df-nf 1785  df-sb 2068  df-mo 2537  df-eu 2566  df-clab 2712  df-cleq 2725  df-clel 2808  df-nfc 2882  df-ne 2930  df-nel 3034  df-ral 3049  df-rex 3058  df-rmo 3347  df-reu 3348  df-rab 3397  df-v 3439  df-sbc 3738  df-csb 3847  df-dif 3901  df-un 3903  df-in 3905  df-ss 3915  df-pss 3918  df-nul 4283  df-if 4475  df-pw 4551  df-sn 4576  df-pr 4578  df-op 4582  df-uni 4859  df-int 4898  df-iun 4943  df-iin 4944  df-br 5094  df-opab 5156  df-mpt 5175  df-tr 5201  df-id 5514  df-eprel 5519  df-po 5527  df-so 5528  df-fr 5572  df-we 5574  df-xp 5625  df-rel 5626  df-cnv 5627  df-co 5628  df-dm 5629  df-rn 5630  df-res 5631  df-ima 5632  df-pred 6253  df-ord 6314  df-on 6315  df-lim 6316  df-suc 6317  df-iota 6442  df-fun 6488  df-fn 6489  df-f 6490  df-f1 6491  df-fo 6492  df-f1o 6493  df-fv 6494  df-riota 7309  df-ov 7355  df-oprab 7356  df-mpo 7357  df-om 7803  df-1st 7927  df-2nd 7928  df-frecs 8217  df-wrecs 8248  df-recs 8297  df-rdg 8335  df-1o 8391  df-2o 8392  df-er 8628  df-map 8758  df-en 8876  df-dom 8877  df-sdom 8878  df-fin 8879  df-fi 9302  df-sup 9333  df-inf 9334  df-pnf 11155  df-mnf 11156  df-xr 11157  df-ltxr 11158  df-le 11159  df-sub 11353  df-neg 11354  df-div 11782  df-nn 12133  df-2 12195  df-n0 12389  df-z 12476  df-uz 12739  df-q 12849  df-rp 12893  df-xneg 13013  df-xadd 13014  df-xmul 13015  df-ico 13253  df-icc 13254  df-rest 17328  df-topgen 17349  df-psmet 21285  df-xmet 21286  df-met 21287  df-bl 21288  df-mopn 21289  df-fbas 21290  df-fg 21291  df-top 22810  df-topon 22827  df-bases 22862  df-cld 22935  df-ntr 22936  df-cls 22937  df-nei 23014  df-haus 23231  df-fil 23762  df-flim 23855  df-cfil 25183  df-cmet 25185

This theorem is referenced by:  recmet  25251  cmsss  25279  cmscsscms  25301  bnsscmcl  30850  rrnheibor  37897