cmpcld - Metamath Proof Explorer

	Metamath Proof Explorer		< Previous Next > Nearby theorems
Mirrors > Home > MPE Home > Th. List > cmpcld		Structured version Visualization version GIF version

Theorem cmpcld 23540

Description: A closed subset of a compact space is compact. (Contributed by Jeff Hankins, 29-Jun-2009.)

**Assertion**
Ref	Expression
cmpcld	⊢ ((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) → (𝐽 ↾_t 𝑆) ∈ Comp)

Proof of Theorem cmpcld Dummy variables 𝑡 𝑠 𝑢 𝑣 𝑤 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		velpw 4568	. . . 4 ⊢ (𝑠 ∈ 𝒫 𝐽 ↔ 𝑠 ⊆ 𝐽)
2		simp1l 1216	. . . . . . 7 ⊢ (((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) → 𝐽 ∈ Comp)
3		simp2 1155	. . . . . . . 8 ⊢ (((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) → 𝑠 ⊆ 𝐽)
4		eqid 2763	. . . . . . . . . . . 12 ⊢ ∪ 𝐽 = ∪ 𝐽
5	4	cldopn 23169	. . . . . . . . . . 11 ⊢ (𝑆 ∈ (Clsd‘𝐽) → (∪ 𝐽 ∖ 𝑆) ∈ 𝐽)
6	5	adantl 486	. . . . . . . . . 10 ⊢ ((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) → (∪ 𝐽 ∖ 𝑆) ∈ 𝐽)
7	6	3ad2ant1 1151	. . . . . . . . 9 ⊢ (((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) → (∪ 𝐽 ∖ 𝑆) ∈ 𝐽)
8	7	snssd 4753	. . . . . . . 8 ⊢ (((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) → {(∪ 𝐽 ∖ 𝑆)} ⊆ 𝐽)
9	3, 8	unssd 4146	. . . . . . 7 ⊢ (((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) → (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)}) ⊆ 𝐽)
10		simp3 1156	. . . . . . . . . . . . 13 ⊢ (((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) → 𝑆 ⊆ ∪ 𝑠)
11		uniss 4881	. . . . . . . . . . . . . 14 ⊢ (𝑠 ⊆ 𝐽 → ∪ 𝑠 ⊆ ∪ 𝐽)
12	11	3ad2ant2 1152	. . . . . . . . . . . . 13 ⊢ (((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) → ∪ 𝑠 ⊆ ∪ 𝐽)
13	10, 12	sstrd 3948	. . . . . . . . . . . 12 ⊢ (((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) → 𝑆 ⊆ ∪ 𝐽)
14		undif 4444	. . . . . . . . . . . 12 ⊢ (𝑆 ⊆ ∪ 𝐽 ↔ (𝑆 ∪ (∪ 𝐽 ∖ 𝑆)) = ∪ 𝐽)
15	13, 14	sylib 221	. . . . . . . . . . 11 ⊢ (((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) → (𝑆 ∪ (∪ 𝐽 ∖ 𝑆)) = ∪ 𝐽)
16		unss1 4139	. . . . . . . . . . . 12 ⊢ (𝑆 ⊆ ∪ 𝑠 → (𝑆 ∪ (∪ 𝐽 ∖ 𝑆)) ⊆ (∪ 𝑠 ∪ (∪ 𝐽 ∖ 𝑆)))
17	16	3ad2ant3 1153	. . . . . . . . . . 11 ⊢ (((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) → (𝑆 ∪ (∪ 𝐽 ∖ 𝑆)) ⊆ (∪ 𝑠 ∪ (∪ 𝐽 ∖ 𝑆)))
18	15, 17	eqsstrrd 3973	. . . . . . . . . 10 ⊢ (((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) → ∪ 𝐽 ⊆ (∪ 𝑠 ∪ (∪ 𝐽 ∖ 𝑆)))
19		difss 4091	. . . . . . . . . . 11 ⊢ (∪ 𝐽 ∖ 𝑆) ⊆ ∪ 𝐽
20		unss 4144	. . . . . . . . . . 11 ⊢ ((∪ 𝑠 ⊆ ∪ 𝐽 ∧ (∪ 𝐽 ∖ 𝑆) ⊆ ∪ 𝐽) ↔ (∪ 𝑠 ∪ (∪ 𝐽 ∖ 𝑆)) ⊆ ∪ 𝐽)
21	12, 19, 20	sylanblc 600	. . . . . . . . . 10 ⊢ (((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) → (∪ 𝑠 ∪ (∪ 𝐽 ∖ 𝑆)) ⊆ ∪ 𝐽)
22	18, 21	eqssd 3955	. . . . . . . . 9 ⊢ (((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) → ∪ 𝐽 = (∪ 𝑠 ∪ (∪ 𝐽 ∖ 𝑆)))
23		uniexg 7740	. . . . . . . . . . . . 13 ⊢ (𝐽 ∈ Comp → ∪ 𝐽 ∈ V)
24	23	ad2antrr 738	. . . . . . . . . . . 12 ⊢ (((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽) → ∪ 𝐽 ∈ V)
25	24	3adant3 1150	. . . . . . . . . . 11 ⊢ (((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) → ∪ 𝐽 ∈ V)
26		difexg 5301	. . . . . . . . . . 11 ⊢ (∪ 𝐽 ∈ V → (∪ 𝐽 ∖ 𝑆) ∈ V)
27		unisng 4891	. . . . . . . . . . 11 ⊢ ((∪ 𝐽 ∖ 𝑆) ∈ V → ∪ {(∪ 𝐽 ∖ 𝑆)} = (∪ 𝐽 ∖ 𝑆))
28	25, 26, 27	3syl 19	. . . . . . . . . 10 ⊢ (((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) → ∪ {(∪ 𝐽 ∖ 𝑆)} = (∪ 𝐽 ∖ 𝑆))
29	28	uneq2d 4123	. . . . . . . . 9 ⊢ (((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) → (∪ 𝑠 ∪ ∪ {(∪ 𝐽 ∖ 𝑆)}) = (∪ 𝑠 ∪ (∪ 𝐽 ∖ 𝑆)))
30	22, 29	eqtr4d 2801	. . . . . . . 8 ⊢ (((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) → ∪ 𝐽 = (∪ 𝑠 ∪ ∪ {(∪ 𝐽 ∖ 𝑆)}))
31		uniun 4896	. . . . . . . 8 ⊢ ∪ (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)}) = (∪ 𝑠 ∪ ∪ {(∪ 𝐽 ∖ 𝑆)})
32	30, 31	eqtr4di 2816	. . . . . . 7 ⊢ (((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) → ∪ 𝐽 = ∪ (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)}))
33	4	cmpcov 23527	. . . . . . 7 ⊢ ((𝐽 ∈ Comp ∧ (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)}) ⊆ 𝐽 ∧ ∪ 𝐽 = ∪ (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)})) → ∃𝑢 ∈ (𝒫 (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)}) ∩ Fin)∪ 𝐽 = ∪ 𝑢)
34	2, 9, 32, 33	syl3anc 1398	. . . . . 6 ⊢ (((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) → ∃𝑢 ∈ (𝒫 (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)}) ∩ Fin)∪ 𝐽 = ∪ 𝑢)
35		elfpw 9312	. . . . . . . 8 ⊢ (𝑢 ∈ (𝒫 (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)}) ∩ Fin) ↔ (𝑢 ⊆ (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)}) ∧ 𝑢 ∈ Fin))
36		simp2l 1218	. . . . . . . . . . . 12 ⊢ ((((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) ∧ (𝑢 ⊆ (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)}) ∧ 𝑢 ∈ Fin) ∧ ∪ 𝐽 = ∪ 𝑢) → 𝑢 ⊆ (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)}))
37		uncom 4113	. . . . . . . . . . . 12 ⊢ (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)}) = ({(∪ 𝐽 ∖ 𝑆)} ∪ 𝑠)
38	36, 37	sseqtrdi 3978	. . . . . . . . . . 11 ⊢ ((((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) ∧ (𝑢 ⊆ (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)}) ∧ 𝑢 ∈ Fin) ∧ ∪ 𝐽 = ∪ 𝑢) → 𝑢 ⊆ ({(∪ 𝐽 ∖ 𝑆)} ∪ 𝑠))
39		ssundif 4449	. . . . . . . . . . 11 ⊢ (𝑢 ⊆ ({(∪ 𝐽 ∖ 𝑆)} ∪ 𝑠) ↔ (𝑢 ∖ {(∪ 𝐽 ∖ 𝑆)}) ⊆ 𝑠)
40	38, 39	sylib 221	. . . . . . . . . 10 ⊢ ((((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) ∧ (𝑢 ⊆ (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)}) ∧ 𝑢 ∈ Fin) ∧ ∪ 𝐽 = ∪ 𝑢) → (𝑢 ∖ {(∪ 𝐽 ∖ 𝑆)}) ⊆ 𝑠)
41		diffi 9160	. . . . . . . . . . . 12 ⊢ (𝑢 ∈ Fin → (𝑢 ∖ {(∪ 𝐽 ∖ 𝑆)}) ∈ Fin)
42	41	ad2antll 741	. . . . . . . . . . 11 ⊢ ((((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) ∧ (𝑢 ⊆ (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)}) ∧ 𝑢 ∈ Fin)) → (𝑢 ∖ {(∪ 𝐽 ∖ 𝑆)}) ∈ Fin)
43	42	3adant3 1150	. . . . . . . . . 10 ⊢ ((((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) ∧ (𝑢 ⊆ (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)}) ∧ 𝑢 ∈ Fin) ∧ ∪ 𝐽 = ∪ 𝑢) → (𝑢 ∖ {(∪ 𝐽 ∖ 𝑆)}) ∈ Fin)
44		elfpw 9312	. . . . . . . . . 10 ⊢ ((𝑢 ∖ {(∪ 𝐽 ∖ 𝑆)}) ∈ (𝒫 𝑠 ∩ Fin) ↔ ((𝑢 ∖ {(∪ 𝐽 ∖ 𝑆)}) ⊆ 𝑠 ∧ (𝑢 ∖ {(∪ 𝐽 ∖ 𝑆)}) ∈ Fin))
45	40, 43, 44	sylanbrc 594	. . . . . . . . 9 ⊢ ((((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) ∧ (𝑢 ⊆ (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)}) ∧ 𝑢 ∈ Fin) ∧ ∪ 𝐽 = ∪ 𝑢) → (𝑢 ∖ {(∪ 𝐽 ∖ 𝑆)}) ∈ (𝒫 𝑠 ∩ Fin))
46	10	3ad2ant1 1151	. . . . . . . . . . . . . . . 16 ⊢ ((((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) ∧ (𝑢 ⊆ (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)}) ∧ 𝑢 ∈ Fin) ∧ ∪ 𝐽 = ∪ 𝑢) → 𝑆 ⊆ ∪ 𝑠)
47	12	3ad2ant1 1151	. . . . . . . . . . . . . . . . 17 ⊢ ((((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) ∧ (𝑢 ⊆ (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)}) ∧ 𝑢 ∈ Fin) ∧ ∪ 𝐽 = ∪ 𝑢) → ∪ 𝑠 ⊆ ∪ 𝐽)
48		simp3 1156	. . . . . . . . . . . . . . . . 17 ⊢ ((((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) ∧ (𝑢 ⊆ (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)}) ∧ 𝑢 ∈ Fin) ∧ ∪ 𝐽 = ∪ 𝑢) → ∪ 𝐽 = ∪ 𝑢)
49	47, 48	sseqtrd 3974	. . . . . . . . . . . . . . . 16 ⊢ ((((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) ∧ (𝑢 ⊆ (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)}) ∧ 𝑢 ∈ Fin) ∧ ∪ 𝐽 = ∪ 𝑢) → ∪ 𝑠 ⊆ ∪ 𝑢)
50	46, 49	sstrd 3948	. . . . . . . . . . . . . . 15 ⊢ ((((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) ∧ (𝑢 ⊆ (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)}) ∧ 𝑢 ∈ Fin) ∧ ∪ 𝐽 = ∪ 𝑢) → 𝑆 ⊆ ∪ 𝑢)
51	50	sselda 3938	. . . . . . . . . . . . . 14 ⊢ (((((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) ∧ (𝑢 ⊆ (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)}) ∧ 𝑢 ∈ Fin) ∧ ∪ 𝐽 = ∪ 𝑢) ∧ 𝑣 ∈ 𝑆) → 𝑣 ∈ ∪ 𝑢)
52		eluni 4876	. . . . . . . . . . . . . 14 ⊢ (𝑣 ∈ ∪ 𝑢 ↔ ∃𝑤(𝑣 ∈ 𝑤 ∧ 𝑤 ∈ 𝑢))
53	51, 52	sylib 221	. . . . . . . . . . . . 13 ⊢ (((((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) ∧ (𝑢 ⊆ (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)}) ∧ 𝑢 ∈ Fin) ∧ ∪ 𝐽 = ∪ 𝑢) ∧ 𝑣 ∈ 𝑆) → ∃𝑤(𝑣 ∈ 𝑤 ∧ 𝑤 ∈ 𝑢))
54		simpl 487	. . . . . . . . . . . . . . . 16 ⊢ ((𝑣 ∈ 𝑤 ∧ 𝑤 ∈ 𝑢) → 𝑣 ∈ 𝑤)
55	54	a1i 11	. . . . . . . . . . . . . . 15 ⊢ (((((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) ∧ (𝑢 ⊆ (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)}) ∧ 𝑢 ∈ Fin) ∧ ∪ 𝐽 = ∪ 𝑢) ∧ 𝑣 ∈ 𝑆) → ((𝑣 ∈ 𝑤 ∧ 𝑤 ∈ 𝑢) → 𝑣 ∈ 𝑤))
56		simpr 489	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝑣 ∈ 𝑤 ∧ 𝑤 ∈ 𝑢) → 𝑤 ∈ 𝑢)
57	56	a1i 11	. . . . . . . . . . . . . . . . 17 ⊢ (((((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) ∧ (𝑢 ⊆ (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)}) ∧ 𝑢 ∈ Fin) ∧ ∪ 𝐽 = ∪ 𝑢) ∧ 𝑣 ∈ 𝑆) → ((𝑣 ∈ 𝑤 ∧ 𝑤 ∈ 𝑢) → 𝑤 ∈ 𝑢))
58		elndif 4088	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (𝑣 ∈ 𝑆 → ¬ 𝑣 ∈ (∪ 𝐽 ∖ 𝑆))
59	58	ad2antlr 739	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((((((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) ∧ (𝑢 ⊆ (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)}) ∧ 𝑢 ∈ Fin) ∧ ∪ 𝐽 = ∪ 𝑢) ∧ 𝑣 ∈ 𝑆) ∧ 𝑣 ∈ 𝑤) → ¬ 𝑣 ∈ (∪ 𝐽 ∖ 𝑆))
60		eleq2 2852	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ (𝑤 = (∪ 𝐽 ∖ 𝑆) → (𝑣 ∈ 𝑤 ↔ 𝑣 ∈ (∪ 𝐽 ∖ 𝑆)))
61	60	biimpd 232	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ (𝑤 = (∪ 𝐽 ∖ 𝑆) → (𝑣 ∈ 𝑤 → 𝑣 ∈ (∪ 𝐽 ∖ 𝑆)))
62	61	a1i 11	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (((((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) ∧ (𝑢 ⊆ (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)}) ∧ 𝑢 ∈ Fin) ∧ ∪ 𝐽 = ∪ 𝑢) ∧ 𝑣 ∈ 𝑆) → (𝑤 = (∪ 𝐽 ∖ 𝑆) → (𝑣 ∈ 𝑤 → 𝑣 ∈ (∪ 𝐽 ∖ 𝑆))))
63	62	com23 87	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (((((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) ∧ (𝑢 ⊆ (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)}) ∧ 𝑢 ∈ Fin) ∧ ∪ 𝐽 = ∪ 𝑢) ∧ 𝑣 ∈ 𝑆) → (𝑣 ∈ 𝑤 → (𝑤 = (∪ 𝐽 ∖ 𝑆) → 𝑣 ∈ (∪ 𝐽 ∖ 𝑆))))
64	63	imp 411	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((((((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) ∧ (𝑢 ⊆ (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)}) ∧ 𝑢 ∈ Fin) ∧ ∪ 𝐽 = ∪ 𝑢) ∧ 𝑣 ∈ 𝑆) ∧ 𝑣 ∈ 𝑤) → (𝑤 = (∪ 𝐽 ∖ 𝑆) → 𝑣 ∈ (∪ 𝐽 ∖ 𝑆)))
65	59, 64	mtod 201	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((((((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) ∧ (𝑢 ⊆ (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)}) ∧ 𝑢 ∈ Fin) ∧ ∪ 𝐽 = ∪ 𝑢) ∧ 𝑣 ∈ 𝑆) ∧ 𝑣 ∈ 𝑤) → ¬ 𝑤 = (∪ 𝐽 ∖ 𝑆))
66	65	ex 417	. . . . . . . . . . . . . . . . . . 19 ⊢ (((((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) ∧ (𝑢 ⊆ (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)}) ∧ 𝑢 ∈ Fin) ∧ ∪ 𝐽 = ∪ 𝑢) ∧ 𝑣 ∈ 𝑆) → (𝑣 ∈ 𝑤 → ¬ 𝑤 = (∪ 𝐽 ∖ 𝑆)))
67	66	adantrd 496	. . . . . . . . . . . . . . . . . 18 ⊢ (((((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) ∧ (𝑢 ⊆ (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)}) ∧ 𝑢 ∈ Fin) ∧ ∪ 𝐽 = ∪ 𝑢) ∧ 𝑣 ∈ 𝑆) → ((𝑣 ∈ 𝑤 ∧ 𝑤 ∈ 𝑢) → ¬ 𝑤 = (∪ 𝐽 ∖ 𝑆)))
68		velsn 4606	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑤 ∈ {(∪ 𝐽 ∖ 𝑆)} ↔ 𝑤 = (∪ 𝐽 ∖ 𝑆))
69	68	notbii 323	. . . . . . . . . . . . . . . . . 18 ⊢ (¬ 𝑤 ∈ {(∪ 𝐽 ∖ 𝑆)} ↔ ¬ 𝑤 = (∪ 𝐽 ∖ 𝑆))
70	67, 69	imbitrrdi 255	. . . . . . . . . . . . . . . . 17 ⊢ (((((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) ∧ (𝑢 ⊆ (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)}) ∧ 𝑢 ∈ Fin) ∧ ∪ 𝐽 = ∪ 𝑢) ∧ 𝑣 ∈ 𝑆) → ((𝑣 ∈ 𝑤 ∧ 𝑤 ∈ 𝑢) → ¬ 𝑤 ∈ {(∪ 𝐽 ∖ 𝑆)}))
71	57, 70	jcad 521	. . . . . . . . . . . . . . . 16 ⊢ (((((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) ∧ (𝑢 ⊆ (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)}) ∧ 𝑢 ∈ Fin) ∧ ∪ 𝐽 = ∪ 𝑢) ∧ 𝑣 ∈ 𝑆) → ((𝑣 ∈ 𝑤 ∧ 𝑤 ∈ 𝑢) → (𝑤 ∈ 𝑢 ∧ ¬ 𝑤 ∈ {(∪ 𝐽 ∖ 𝑆)})))
72		eldif 3916	. . . . . . . . . . . . . . . 16 ⊢ (𝑤 ∈ (𝑢 ∖ {(∪ 𝐽 ∖ 𝑆)}) ↔ (𝑤 ∈ 𝑢 ∧ ¬ 𝑤 ∈ {(∪ 𝐽 ∖ 𝑆)}))
73	71, 72	imbitrrdi 255	. . . . . . . . . . . . . . 15 ⊢ (((((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) ∧ (𝑢 ⊆ (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)}) ∧ 𝑢 ∈ Fin) ∧ ∪ 𝐽 = ∪ 𝑢) ∧ 𝑣 ∈ 𝑆) → ((𝑣 ∈ 𝑤 ∧ 𝑤 ∈ 𝑢) → 𝑤 ∈ (𝑢 ∖ {(∪ 𝐽 ∖ 𝑆)})))
74	55, 73	jcad 521	. . . . . . . . . . . . . 14 ⊢ (((((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) ∧ (𝑢 ⊆ (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)}) ∧ 𝑢 ∈ Fin) ∧ ∪ 𝐽 = ∪ 𝑢) ∧ 𝑣 ∈ 𝑆) → ((𝑣 ∈ 𝑤 ∧ 𝑤 ∈ 𝑢) → (𝑣 ∈ 𝑤 ∧ 𝑤 ∈ (𝑢 ∖ {(∪ 𝐽 ∖ 𝑆)}))))
75	74	eximdv 1947	. . . . . . . . . . . . 13 ⊢ (((((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) ∧ (𝑢 ⊆ (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)}) ∧ 𝑢 ∈ Fin) ∧ ∪ 𝐽 = ∪ 𝑢) ∧ 𝑣 ∈ 𝑆) → (∃𝑤(𝑣 ∈ 𝑤 ∧ 𝑤 ∈ 𝑢) → ∃𝑤(𝑣 ∈ 𝑤 ∧ 𝑤 ∈ (𝑢 ∖ {(∪ 𝐽 ∖ 𝑆)}))))
76	53, 75	mpd 16	. . . . . . . . . . . 12 ⊢ (((((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) ∧ (𝑢 ⊆ (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)}) ∧ 𝑢 ∈ Fin) ∧ ∪ 𝐽 = ∪ 𝑢) ∧ 𝑣 ∈ 𝑆) → ∃𝑤(𝑣 ∈ 𝑤 ∧ 𝑤 ∈ (𝑢 ∖ {(∪ 𝐽 ∖ 𝑆)})))
77	76	ex 417	. . . . . . . . . . 11 ⊢ ((((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) ∧ (𝑢 ⊆ (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)}) ∧ 𝑢 ∈ Fin) ∧ ∪ 𝐽 = ∪ 𝑢) → (𝑣 ∈ 𝑆 → ∃𝑤(𝑣 ∈ 𝑤 ∧ 𝑤 ∈ (𝑢 ∖ {(∪ 𝐽 ∖ 𝑆)}))))
78		eluni 4876	. . . . . . . . . . 11 ⊢ (𝑣 ∈ ∪ (𝑢 ∖ {(∪ 𝐽 ∖ 𝑆)}) ↔ ∃𝑤(𝑣 ∈ 𝑤 ∧ 𝑤 ∈ (𝑢 ∖ {(∪ 𝐽 ∖ 𝑆)})))
79	77, 78	imbitrrdi 255	. . . . . . . . . 10 ⊢ ((((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) ∧ (𝑢 ⊆ (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)}) ∧ 𝑢 ∈ Fin) ∧ ∪ 𝐽 = ∪ 𝑢) → (𝑣 ∈ 𝑆 → 𝑣 ∈ ∪ (𝑢 ∖ {(∪ 𝐽 ∖ 𝑆)})))
80	79	ssrdv 3944	. . . . . . . . 9 ⊢ ((((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) ∧ (𝑢 ⊆ (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)}) ∧ 𝑢 ∈ Fin) ∧ ∪ 𝐽 = ∪ 𝑢) → 𝑆 ⊆ ∪ (𝑢 ∖ {(∪ 𝐽 ∖ 𝑆)}))
81		unieq 4884	. . . . . . . . . . 11 ⊢ (𝑡 = (𝑢 ∖ {(∪ 𝐽 ∖ 𝑆)}) → ∪ 𝑡 = ∪ (𝑢 ∖ {(∪ 𝐽 ∖ 𝑆)}))
82	81	sseq2d 3970	. . . . . . . . . 10 ⊢ (𝑡 = (𝑢 ∖ {(∪ 𝐽 ∖ 𝑆)}) → (𝑆 ⊆ ∪ 𝑡 ↔ 𝑆 ⊆ ∪ (𝑢 ∖ {(∪ 𝐽 ∖ 𝑆)})))
83	82	rspcev 3582	. . . . . . . . 9 ⊢ (((𝑢 ∖ {(∪ 𝐽 ∖ 𝑆)}) ∈ (𝒫 𝑠 ∩ Fin) ∧ 𝑆 ⊆ ∪ (𝑢 ∖ {(∪ 𝐽 ∖ 𝑆)})) → ∃𝑡 ∈ (𝒫 𝑠 ∩ Fin)𝑆 ⊆ ∪ 𝑡)
84	45, 80, 83	syl2anc 595	. . . . . . . 8 ⊢ ((((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) ∧ (𝑢 ⊆ (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)}) ∧ 𝑢 ∈ Fin) ∧ ∪ 𝐽 = ∪ 𝑢) → ∃𝑡 ∈ (𝒫 𝑠 ∩ Fin)𝑆 ⊆ ∪ 𝑡)
85	35, 84	syl3an2b 1431	. . . . . . 7 ⊢ ((((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) ∧ 𝑢 ∈ (𝒫 (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)}) ∩ Fin) ∧ ∪ 𝐽 = ∪ 𝑢) → ∃𝑡 ∈ (𝒫 𝑠 ∩ Fin)𝑆 ⊆ ∪ 𝑡)
86	85	rexlimdv3a 3170	. . . . . 6 ⊢ (((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) → (∃𝑢 ∈ (𝒫 (𝑠 ∪ {(∪ 𝐽 ∖ 𝑆)}) ∩ Fin)∪ 𝐽 = ∪ 𝑢 → ∃𝑡 ∈ (𝒫 𝑠 ∩ Fin)𝑆 ⊆ ∪ 𝑡))
87	34, 86	mpd 16	. . . . 5 ⊢ (((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) ∧ 𝑠 ⊆ 𝐽 ∧ 𝑆 ⊆ ∪ 𝑠) → ∃𝑡 ∈ (𝒫 𝑠 ∩ Fin)𝑆 ⊆ ∪ 𝑡)
88	87	3exp 1137	. . . 4 ⊢ ((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) → (𝑠 ⊆ 𝐽 → (𝑆 ⊆ ∪ 𝑠 → ∃𝑡 ∈ (𝒫 𝑠 ∩ Fin)𝑆 ⊆ ∪ 𝑡)))
89	1, 88	biimtrid 245	. . 3 ⊢ ((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) → (𝑠 ∈ 𝒫 𝐽 → (𝑆 ⊆ ∪ 𝑠 → ∃𝑡 ∈ (𝒫 𝑠 ∩ Fin)𝑆 ⊆ ∪ 𝑡)))
90	89	ralrimiv 3156	. 2 ⊢ ((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) → ∀𝑠 ∈ 𝒫 𝐽(𝑆 ⊆ ∪ 𝑠 → ∃𝑡 ∈ (𝒫 𝑠 ∩ Fin)𝑆 ⊆ ∪ 𝑡))
91		cmptop 23533	. . 3 ⊢ (𝐽 ∈ Comp → 𝐽 ∈ Top)
92	4	cldss 23167	. . 3 ⊢ (𝑆 ∈ (Clsd‘𝐽) → 𝑆 ⊆ ∪ 𝐽)
93	4	cmpsub 23538	. . 3 ⊢ ((𝐽 ∈ Top ∧ 𝑆 ⊆ ∪ 𝐽) → ((𝐽 ↾_t 𝑆) ∈ Comp ↔ ∀𝑠 ∈ 𝒫 𝐽(𝑆 ⊆ ∪ 𝑠 → ∃𝑡 ∈ (𝒫 𝑠 ∩ Fin)𝑆 ⊆ ∪ 𝑡)))
94	91, 92, 93	syl2an 607	. 2 ⊢ ((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) → ((𝐽 ↾_t 𝑆) ∈ Comp ↔ ∀𝑠 ∈ 𝒫 𝐽(𝑆 ⊆ ∪ 𝑠 → ∃𝑡 ∈ (𝒫 𝑠 ∩ Fin)𝑆 ⊆ ∪ 𝑡)))
95	90, 94	mpbird 260	1 ⊢ ((𝐽 ∈ Comp ∧ 𝑆 ∈ (Clsd‘𝐽)) → (𝐽 ↾_t 𝑆) ∈ Comp)

Colors of variables: wff setvar class

Syntax hints: ¬ wn 3 → wi 4 ↔ wb 209 ∧ wa 400 ∧ w3a 1103 = wceq 1570 ∃wex 1809 ∈ wcel 2143 ∀wral 3079 ∃wrex 3089 Vcvv 3455 ∖ cdif 3903 ∪ cun 3904 ∩ cin 3905 ⊆ wss 3906 𝒫 cpw 4563 {csn 4590 ∪ cuni 4873 ‘cfv 6538 (class class class)co 7412 Fincfn 8944 ↾_t crest 17474 Topctop 23031 Clsdccld 23154 Compccmp 23524

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-rep 5239 ax-sep 5258 ax-nul 5270 ax-pow 5338 ax-pr 5406 ax-un 7734

This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-nf 1814 df-sb 2097 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-ral 3080 df-rex 3090 df-reu 3370 df-rab 3417 df-v 3457 df-sbc 3746 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-pss 3926 df-nul 4288 df-if 4489 df-pw 4565 df-sn 4591 df-pr 4593 df-op 4597 df-uni 4874 df-int 4914 df-iun 4959 df-br 5111 df-opab 5175 df-mpt 5194 df-tr 5220 df-id 5558 df-eprel 5563 df-po 5571 df-so 5572 df-fr 5616 df-we 5618 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-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 df-ov 7415 df-oprab 7416 df-mpo 7417 df-om 7864 df-1st 7987 df-2nd 7988 df-1o 8454 df-en 8945 df-dom 8946 df-fin 8948 df-fi 9372 df-rest 17476 df-topgen 17497 df-top 23032 df-topon 23049 df-bases 23084 df-cld 23157 df-cmp 23525

This theorem is referenced by: hausllycmp 23632 cldllycmp 23633 txkgen 23790 cmphaushmeo 23938 cnheiborlem 25094 cmpcmet 25459 stoweidlem28 46725 stoweidlem50 46747 stoweidlem57 46754

W3C validator