Theorem uncmp 23521

Description: The union of two compact sets is compact. (Contributed by Jeff Hankins, 30-Jan-2010.)

Hypothesis

Ref	Expression
uncmp.1	⊢ 𝑋 = ∪ 𝐽

Assertion

Ref	Expression
uncmp	⊢ (((𝐽 ∈ Top ∧ 𝑋 = (𝑆 ∪ 𝑇)) ∧ ((𝐽 ↾t 𝑆) ∈ Comp ∧ (𝐽 ↾t 𝑇) ∈ Comp)) → 𝐽 ∈ Comp)

Proof of Theorem uncmp

Dummy variables 𝑐 𝑑 𝑚 𝑛 𝑟 𝑠 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		simpll 778	. 2 ⊢ (((𝐽 ∈ Top ∧ 𝑋 = (𝑆 ∪ 𝑇)) ∧ ((𝐽 ↾t 𝑆) ∈ Comp ∧ (𝐽 ↾t 𝑇) ∈ Comp)) → 𝐽 ∈ Top)
2		simpll 778	. . . . . . . 8 ⊢ (((𝐽 ∈ Top ∧ 𝑋 = (𝑆 ∪ 𝑇)) ∧ (𝑐 ∈ 𝒫 𝐽 ∧ 𝑋 = ∪ 𝑐)) → 𝐽 ∈ Top)
3		ssun1 4133	. . . . . . . . . 10 ⊢ 𝑆 ⊆ (𝑆 ∪ 𝑇)
4		sseq2 3965	. . . . . . . . . 10 ⊢ (𝑋 = (𝑆 ∪ 𝑇) → (𝑆 ⊆ 𝑋 ↔ 𝑆 ⊆ (𝑆 ∪ 𝑇)))
5	3, 4	mpbiri 261	. . . . . . . . 9 ⊢ (𝑋 = (𝑆 ∪ 𝑇) → 𝑆 ⊆ 𝑋)
6	5	ad2antlr 739	. . . . . . . 8 ⊢ (((𝐽 ∈ Top ∧ 𝑋 = (𝑆 ∪ 𝑇)) ∧ (𝑐 ∈ 𝒫 𝐽 ∧ 𝑋 = ∪ 𝑐)) → 𝑆 ⊆ 𝑋)
7		uncmp.1	. . . . . . . . 9 ⊢ 𝑋 = ∪ 𝐽
8	7	cmpsub 23518	. . . . . . . 8 ⊢ ((𝐽 ∈ Top ∧ 𝑆 ⊆ 𝑋) → ((𝐽 ↾t 𝑆) ∈ Comp ↔ ∀𝑚 ∈ 𝒫 𝐽(𝑆 ⊆ ∪ 𝑚 → ∃𝑛 ∈ (𝒫 𝑚 ∩ Fin)𝑆 ⊆ ∪ 𝑛)))
9	2, 6, 8	syl2anc 595	. . . . . . 7 ⊢ (((𝐽 ∈ Top ∧ 𝑋 = (𝑆 ∪ 𝑇)) ∧ (𝑐 ∈ 𝒫 𝐽 ∧ 𝑋 = ∪ 𝑐)) → ((𝐽 ↾t 𝑆) ∈ Comp ↔ ∀𝑚 ∈ 𝒫 𝐽(𝑆 ⊆ ∪ 𝑚 → ∃𝑛 ∈ (𝒫 𝑚 ∩ Fin)𝑆 ⊆ ∪ 𝑛)))
10		simprr 784	. . . . . . . . 9 ⊢ (((𝐽 ∈ Top ∧ 𝑋 = (𝑆 ∪ 𝑇)) ∧ (𝑐 ∈ 𝒫 𝐽 ∧ 𝑋 = ∪ 𝑐)) → 𝑋 = ∪ 𝑐)
11	6, 10	sseqtrd 3975	. . . . . . . 8 ⊢ (((𝐽 ∈ Top ∧ 𝑋 = (𝑆 ∪ 𝑇)) ∧ (𝑐 ∈ 𝒫 𝐽 ∧ 𝑋 = ∪ 𝑐)) → 𝑆 ⊆ ∪ 𝑐)
12		unieq 4879	. . . . . . . . . . . 12 ⊢ (𝑚 = 𝑐 → ∪ 𝑚 = ∪ 𝑐)
13	12	sseq2d 3971	. . . . . . . . . . 11 ⊢ (𝑚 = 𝑐 → (𝑆 ⊆ ∪ 𝑚 ↔ 𝑆 ⊆ ∪ 𝑐))
14		pweq 4572	. . . . . . . . . . . . 13 ⊢ (𝑚 = 𝑐 → 𝒫 𝑚 = 𝒫 𝑐)
15	14	ineq1d 4174	. . . . . . . . . . . 12 ⊢ (𝑚 = 𝑐 → (𝒫 𝑚 ∩ Fin) = (𝒫 𝑐 ∩ Fin))
16	15	rexeqdv 3324	. . . . . . . . . . 11 ⊢ (𝑚 = 𝑐 → (∃𝑛 ∈ (𝒫 𝑚 ∩ Fin)𝑆 ⊆ ∪ 𝑛 ↔ ∃𝑛 ∈ (𝒫 𝑐 ∩ Fin)𝑆 ⊆ ∪ 𝑛))
17	13, 16	imbi12d 347	. . . . . . . . . 10 ⊢ (𝑚 = 𝑐 → ((𝑆 ⊆ ∪ 𝑚 → ∃𝑛 ∈ (𝒫 𝑚 ∩ Fin)𝑆 ⊆ ∪ 𝑛) ↔ (𝑆 ⊆ ∪ 𝑐 → ∃𝑛 ∈ (𝒫 𝑐 ∩ Fin)𝑆 ⊆ ∪ 𝑛)))
18	17	rspcv 3580	. . . . . . . . 9 ⊢ (𝑐 ∈ 𝒫 𝐽 → (∀𝑚 ∈ 𝒫 𝐽(𝑆 ⊆ ∪ 𝑚 → ∃𝑛 ∈ (𝒫 𝑚 ∩ Fin)𝑆 ⊆ ∪ 𝑛) → (𝑆 ⊆ ∪ 𝑐 → ∃𝑛 ∈ (𝒫 𝑐 ∩ Fin)𝑆 ⊆ ∪ 𝑛)))
19	18	ad2antrl 740	. . . . . . . 8 ⊢ (((𝐽 ∈ Top ∧ 𝑋 = (𝑆 ∪ 𝑇)) ∧ (𝑐 ∈ 𝒫 𝐽 ∧ 𝑋 = ∪ 𝑐)) → (∀𝑚 ∈ 𝒫 𝐽(𝑆 ⊆ ∪ 𝑚 → ∃𝑛 ∈ (𝒫 𝑚 ∩ Fin)𝑆 ⊆ ∪ 𝑛) → (𝑆 ⊆ ∪ 𝑐 → ∃𝑛 ∈ (𝒫 𝑐 ∩ Fin)𝑆 ⊆ ∪ 𝑛)))
20	11, 19	mpid 45	. . . . . . 7 ⊢ (((𝐽 ∈ Top ∧ 𝑋 = (𝑆 ∪ 𝑇)) ∧ (𝑐 ∈ 𝒫 𝐽 ∧ 𝑋 = ∪ 𝑐)) → (∀𝑚 ∈ 𝒫 𝐽(𝑆 ⊆ ∪ 𝑚 → ∃𝑛 ∈ (𝒫 𝑚 ∩ Fin)𝑆 ⊆ ∪ 𝑛) → ∃𝑛 ∈ (𝒫 𝑐 ∩ Fin)𝑆 ⊆ ∪ 𝑛))
21	9, 20	sylbid 243	. . . . . 6 ⊢ (((𝐽 ∈ Top ∧ 𝑋 = (𝑆 ∪ 𝑇)) ∧ (𝑐 ∈ 𝒫 𝐽 ∧ 𝑋 = ∪ 𝑐)) → ((𝐽 ↾t 𝑆) ∈ Comp → ∃𝑛 ∈ (𝒫 𝑐 ∩ Fin)𝑆 ⊆ ∪ 𝑛))
22		ssun2 4134	. . . . . . . . . 10 ⊢ 𝑇 ⊆ (𝑆 ∪ 𝑇)
23		sseq2 3965	. . . . . . . . . 10 ⊢ (𝑋 = (𝑆 ∪ 𝑇) → (𝑇 ⊆ 𝑋 ↔ 𝑇 ⊆ (𝑆 ∪ 𝑇)))
24	22, 23	mpbiri 261	. . . . . . . . 9 ⊢ (𝑋 = (𝑆 ∪ 𝑇) → 𝑇 ⊆ 𝑋)
25	24	ad2antlr 739	. . . . . . . 8 ⊢ (((𝐽 ∈ Top ∧ 𝑋 = (𝑆 ∪ 𝑇)) ∧ (𝑐 ∈ 𝒫 𝐽 ∧ 𝑋 = ∪ 𝑐)) → 𝑇 ⊆ 𝑋)
26	7	cmpsub 23518	. . . . . . . 8 ⊢ ((𝐽 ∈ Top ∧ 𝑇 ⊆ 𝑋) → ((𝐽 ↾t 𝑇) ∈ Comp ↔ ∀𝑟 ∈ 𝒫 𝐽(𝑇 ⊆ ∪ 𝑟 → ∃𝑠 ∈ (𝒫 𝑟 ∩ Fin)𝑇 ⊆ ∪ 𝑠)))
27	2, 25, 26	syl2anc 595	. . . . . . 7 ⊢ (((𝐽 ∈ Top ∧ 𝑋 = (𝑆 ∪ 𝑇)) ∧ (𝑐 ∈ 𝒫 𝐽 ∧ 𝑋 = ∪ 𝑐)) → ((𝐽 ↾t 𝑇) ∈ Comp ↔ ∀𝑟 ∈ 𝒫 𝐽(𝑇 ⊆ ∪ 𝑟 → ∃𝑠 ∈ (𝒫 𝑟 ∩ Fin)𝑇 ⊆ ∪ 𝑠)))
28	25, 10	sseqtrd 3975	. . . . . . . 8 ⊢ (((𝐽 ∈ Top ∧ 𝑋 = (𝑆 ∪ 𝑇)) ∧ (𝑐 ∈ 𝒫 𝐽 ∧ 𝑋 = ∪ 𝑐)) → 𝑇 ⊆ ∪ 𝑐)
29		unieq 4879	. . . . . . . . . . . 12 ⊢ (𝑟 = 𝑐 → ∪ 𝑟 = ∪ 𝑐)
30	29	sseq2d 3971	. . . . . . . . . . 11 ⊢ (𝑟 = 𝑐 → (𝑇 ⊆ ∪ 𝑟 ↔ 𝑇 ⊆ ∪ 𝑐))
31		pweq 4572	. . . . . . . . . . . . 13 ⊢ (𝑟 = 𝑐 → 𝒫 𝑟 = 𝒫 𝑐)
32	31	ineq1d 4174	. . . . . . . . . . . 12 ⊢ (𝑟 = 𝑐 → (𝒫 𝑟 ∩ Fin) = (𝒫 𝑐 ∩ Fin))
33	32	rexeqdv 3324	. . . . . . . . . . 11 ⊢ (𝑟 = 𝑐 → (∃𝑠 ∈ (𝒫 𝑟 ∩ Fin)𝑇 ⊆ ∪ 𝑠 ↔ ∃𝑠 ∈ (𝒫 𝑐 ∩ Fin)𝑇 ⊆ ∪ 𝑠))
34	30, 33	imbi12d 347	. . . . . . . . . 10 ⊢ (𝑟 = 𝑐 → ((𝑇 ⊆ ∪ 𝑟 → ∃𝑠 ∈ (𝒫 𝑟 ∩ Fin)𝑇 ⊆ ∪ 𝑠) ↔ (𝑇 ⊆ ∪ 𝑐 → ∃𝑠 ∈ (𝒫 𝑐 ∩ Fin)𝑇 ⊆ ∪ 𝑠)))
35	34	rspcv 3580	. . . . . . . . 9 ⊢ (𝑐 ∈ 𝒫 𝐽 → (∀𝑟 ∈ 𝒫 𝐽(𝑇 ⊆ ∪ 𝑟 → ∃𝑠 ∈ (𝒫 𝑟 ∩ Fin)𝑇 ⊆ ∪ 𝑠) → (𝑇 ⊆ ∪ 𝑐 → ∃𝑠 ∈ (𝒫 𝑐 ∩ Fin)𝑇 ⊆ ∪ 𝑠)))
36	35	ad2antrl 740	. . . . . . . 8 ⊢ (((𝐽 ∈ Top ∧ 𝑋 = (𝑆 ∪ 𝑇)) ∧ (𝑐 ∈ 𝒫 𝐽 ∧ 𝑋 = ∪ 𝑐)) → (∀𝑟 ∈ 𝒫 𝐽(𝑇 ⊆ ∪ 𝑟 → ∃𝑠 ∈ (𝒫 𝑟 ∩ Fin)𝑇 ⊆ ∪ 𝑠) → (𝑇 ⊆ ∪ 𝑐 → ∃𝑠 ∈ (𝒫 𝑐 ∩ Fin)𝑇 ⊆ ∪ 𝑠)))
37	28, 36	mpid 45	. . . . . . 7 ⊢ (((𝐽 ∈ Top ∧ 𝑋 = (𝑆 ∪ 𝑇)) ∧ (𝑐 ∈ 𝒫 𝐽 ∧ 𝑋 = ∪ 𝑐)) → (∀𝑟 ∈ 𝒫 𝐽(𝑇 ⊆ ∪ 𝑟 → ∃𝑠 ∈ (𝒫 𝑟 ∩ Fin)𝑇 ⊆ ∪ 𝑠) → ∃𝑠 ∈ (𝒫 𝑐 ∩ Fin)𝑇 ⊆ ∪ 𝑠))
38	27, 37	sylbid 243	. . . . . 6 ⊢ (((𝐽 ∈ Top ∧ 𝑋 = (𝑆 ∪ 𝑇)) ∧ (𝑐 ∈ 𝒫 𝐽 ∧ 𝑋 = ∪ 𝑐)) → ((𝐽 ↾t 𝑇) ∈ Comp → ∃𝑠 ∈ (𝒫 𝑐 ∩ Fin)𝑇 ⊆ ∪ 𝑠))
39		reeanv 3237	. . . . . . 7 ⊢ (∃𝑛 ∈ (𝒫 𝑐 ∩ Fin)∃𝑠 ∈ (𝒫 𝑐 ∩ Fin)(𝑆 ⊆ ∪ 𝑛 ∧ 𝑇 ⊆ ∪ 𝑠) ↔ (∃𝑛 ∈ (𝒫 𝑐 ∩ Fin)𝑆 ⊆ ∪ 𝑛 ∧ ∃𝑠 ∈ (𝒫 𝑐 ∩ Fin)𝑇 ⊆ ∪ 𝑠))
40		elinel1 4156	. . . . . . . . . . . . . . . 16 ⊢ (𝑛 ∈ (𝒫 𝑐 ∩ Fin) → 𝑛 ∈ 𝒫 𝑐)
41	40	elpwid 4567	. . . . . . . . . . . . . . 15 ⊢ (𝑛 ∈ (𝒫 𝑐 ∩ Fin) → 𝑛 ⊆ 𝑐)
42		elinel1 4156	. . . . . . . . . . . . . . . 16 ⊢ (𝑠 ∈ (𝒫 𝑐 ∩ Fin) → 𝑠 ∈ 𝒫 𝑐)
43	42	elpwid 4567	. . . . . . . . . . . . . . 15 ⊢ (𝑠 ∈ (𝒫 𝑐 ∩ Fin) → 𝑠 ⊆ 𝑐)
44	41, 43	anim12i 624	. . . . . . . . . . . . . 14 ⊢ ((𝑛 ∈ (𝒫 𝑐 ∩ Fin) ∧ 𝑠 ∈ (𝒫 𝑐 ∩ Fin)) → (𝑛 ⊆ 𝑐 ∧ 𝑠 ⊆ 𝑐))
45	44	ad2antrl 740	. . . . . . . . . . . . 13 ⊢ ((((𝐽 ∈ Top ∧ 𝑋 = (𝑆 ∪ 𝑇)) ∧ (𝑐 ∈ 𝒫 𝐽 ∧ 𝑋 = ∪ 𝑐)) ∧ ((𝑛 ∈ (𝒫 𝑐 ∩ Fin) ∧ 𝑠 ∈ (𝒫 𝑐 ∩ Fin)) ∧ (𝑆 ⊆ ∪ 𝑛 ∧ 𝑇 ⊆ ∪ 𝑠))) → (𝑛 ⊆ 𝑐 ∧ 𝑠 ⊆ 𝑐))
46		unss 4145	. . . . . . . . . . . . 13 ⊢ ((𝑛 ⊆ 𝑐 ∧ 𝑠 ⊆ 𝑐) ↔ (𝑛 ∪ 𝑠) ⊆ 𝑐)
47	45, 46	sylib 221	. . . . . . . . . . . 12 ⊢ ((((𝐽 ∈ Top ∧ 𝑋 = (𝑆 ∪ 𝑇)) ∧ (𝑐 ∈ 𝒫 𝐽 ∧ 𝑋 = ∪ 𝑐)) ∧ ((𝑛 ∈ (𝒫 𝑐 ∩ Fin) ∧ 𝑠 ∈ (𝒫 𝑐 ∩ Fin)) ∧ (𝑆 ⊆ ∪ 𝑛 ∧ 𝑇 ⊆ ∪ 𝑠))) → (𝑛 ∪ 𝑠) ⊆ 𝑐)
48		elinel2 4157	. . . . . . . . . . . . . 14 ⊢ (𝑛 ∈ (𝒫 𝑐 ∩ Fin) → 𝑛 ∈ Fin)
49		elinel2 4157	. . . . . . . . . . . . . 14 ⊢ (𝑠 ∈ (𝒫 𝑐 ∩ Fin) → 𝑠 ∈ Fin)
50		unfi 9143	. . . . . . . . . . . . . 14 ⊢ ((𝑛 ∈ Fin ∧ 𝑠 ∈ Fin) → (𝑛 ∪ 𝑠) ∈ Fin)
51	48, 49, 50	syl2an 607	. . . . . . . . . . . . 13 ⊢ ((𝑛 ∈ (𝒫 𝑐 ∩ Fin) ∧ 𝑠 ∈ (𝒫 𝑐 ∩ Fin)) → (𝑛 ∪ 𝑠) ∈ Fin)
52	51	ad2antrl 740	. . . . . . . . . . . 12 ⊢ ((((𝐽 ∈ Top ∧ 𝑋 = (𝑆 ∪ 𝑇)) ∧ (𝑐 ∈ 𝒫 𝐽 ∧ 𝑋 = ∪ 𝑐)) ∧ ((𝑛 ∈ (𝒫 𝑐 ∩ Fin) ∧ 𝑠 ∈ (𝒫 𝑐 ∩ Fin)) ∧ (𝑆 ⊆ ∪ 𝑛 ∧ 𝑇 ⊆ ∪ 𝑠))) → (𝑛 ∪ 𝑠) ∈ Fin)
53	47, 52	jca 520	. . . . . . . . . . 11 ⊢ ((((𝐽 ∈ Top ∧ 𝑋 = (𝑆 ∪ 𝑇)) ∧ (𝑐 ∈ 𝒫 𝐽 ∧ 𝑋 = ∪ 𝑐)) ∧ ((𝑛 ∈ (𝒫 𝑐 ∩ Fin) ∧ 𝑠 ∈ (𝒫 𝑐 ∩ Fin)) ∧ (𝑆 ⊆ ∪ 𝑛 ∧ 𝑇 ⊆ ∪ 𝑠))) → ((𝑛 ∪ 𝑠) ⊆ 𝑐 ∧ (𝑛 ∪ 𝑠) ∈ Fin))
54		elin 3923	. . . . . . . . . . . 12 ⊢ ((𝑛 ∪ 𝑠) ∈ (𝒫 𝑐 ∩ Fin) ↔ ((𝑛 ∪ 𝑠) ∈ 𝒫 𝑐 ∧ (𝑛 ∪ 𝑠) ∈ Fin))
55		vex 3461	. . . . . . . . . . . . . 14 ⊢ 𝑐 ∈ V
56	55	elpw2 5295	. . . . . . . . . . . . 13 ⊢ ((𝑛 ∪ 𝑠) ∈ 𝒫 𝑐 ↔ (𝑛 ∪ 𝑠) ⊆ 𝑐)
57	56	anbi1i 635	. . . . . . . . . . . 12 ⊢ (((𝑛 ∪ 𝑠) ∈ 𝒫 𝑐 ∧ (𝑛 ∪ 𝑠) ∈ Fin) ↔ ((𝑛 ∪ 𝑠) ⊆ 𝑐 ∧ (𝑛 ∪ 𝑠) ∈ Fin))
58	54, 57	bitr2i 279	. . . . . . . . . . 11 ⊢ (((𝑛 ∪ 𝑠) ⊆ 𝑐 ∧ (𝑛 ∪ 𝑠) ∈ Fin) ↔ (𝑛 ∪ 𝑠) ∈ (𝒫 𝑐 ∩ Fin))
59	53, 58	sylib 221	. . . . . . . . . 10 ⊢ ((((𝐽 ∈ Top ∧ 𝑋 = (𝑆 ∪ 𝑇)) ∧ (𝑐 ∈ 𝒫 𝐽 ∧ 𝑋 = ∪ 𝑐)) ∧ ((𝑛 ∈ (𝒫 𝑐 ∩ Fin) ∧ 𝑠 ∈ (𝒫 𝑐 ∩ Fin)) ∧ (𝑆 ⊆ ∪ 𝑛 ∧ 𝑇 ⊆ ∪ 𝑠))) → (𝑛 ∪ 𝑠) ∈ (𝒫 𝑐 ∩ Fin))
60		simpllr 787	. . . . . . . . . . . . 13 ⊢ ((((𝐽 ∈ Top ∧ 𝑋 = (𝑆 ∪ 𝑇)) ∧ (𝑐 ∈ 𝒫 𝐽 ∧ 𝑋 = ∪ 𝑐)) ∧ ((𝑛 ∈ (𝒫 𝑐 ∩ Fin) ∧ 𝑠 ∈ (𝒫 𝑐 ∩ Fin)) ∧ (𝑆 ⊆ ∪ 𝑛 ∧ 𝑇 ⊆ ∪ 𝑠))) → 𝑋 = (𝑆 ∪ 𝑇))
61		ssun3 4135	. . . . . . . . . . . . . . . 16 ⊢ (𝑆 ⊆ ∪ 𝑛 → 𝑆 ⊆ (∪ 𝑛 ∪ ∪ 𝑠))
62		ssun4 4136	. . . . . . . . . . . . . . . 16 ⊢ (𝑇 ⊆ ∪ 𝑠 → 𝑇 ⊆ (∪ 𝑛 ∪ ∪ 𝑠))
63	61, 62	anim12i 624	. . . . . . . . . . . . . . 15 ⊢ ((𝑆 ⊆ ∪ 𝑛 ∧ 𝑇 ⊆ ∪ 𝑠) → (𝑆 ⊆ (∪ 𝑛 ∪ ∪ 𝑠) ∧ 𝑇 ⊆ (∪ 𝑛 ∪ ∪ 𝑠)))
64	63	ad2antll 741	. . . . . . . . . . . . . 14 ⊢ ((((𝐽 ∈ Top ∧ 𝑋 = (𝑆 ∪ 𝑇)) ∧ (𝑐 ∈ 𝒫 𝐽 ∧ 𝑋 = ∪ 𝑐)) ∧ ((𝑛 ∈ (𝒫 𝑐 ∩ Fin) ∧ 𝑠 ∈ (𝒫 𝑐 ∩ Fin)) ∧ (𝑆 ⊆ ∪ 𝑛 ∧ 𝑇 ⊆ ∪ 𝑠))) → (𝑆 ⊆ (∪ 𝑛 ∪ ∪ 𝑠) ∧ 𝑇 ⊆ (∪ 𝑛 ∪ ∪ 𝑠)))
65		unss 4145	. . . . . . . . . . . . . 14 ⊢ ((𝑆 ⊆ (∪ 𝑛 ∪ ∪ 𝑠) ∧ 𝑇 ⊆ (∪ 𝑛 ∪ ∪ 𝑠)) ↔ (𝑆 ∪ 𝑇) ⊆ (∪ 𝑛 ∪ ∪ 𝑠))
66	64, 65	sylib 221	. . . . . . . . . . . . 13 ⊢ ((((𝐽 ∈ Top ∧ 𝑋 = (𝑆 ∪ 𝑇)) ∧ (𝑐 ∈ 𝒫 𝐽 ∧ 𝑋 = ∪ 𝑐)) ∧ ((𝑛 ∈ (𝒫 𝑐 ∩ Fin) ∧ 𝑠 ∈ (𝒫 𝑐 ∩ Fin)) ∧ (𝑆 ⊆ ∪ 𝑛 ∧ 𝑇 ⊆ ∪ 𝑠))) → (𝑆 ∪ 𝑇) ⊆ (∪ 𝑛 ∪ ∪ 𝑠))
67	60, 66	eqsstrd 3973	. . . . . . . . . . . 12 ⊢ ((((𝐽 ∈ Top ∧ 𝑋 = (𝑆 ∪ 𝑇)) ∧ (𝑐 ∈ 𝒫 𝐽 ∧ 𝑋 = ∪ 𝑐)) ∧ ((𝑛 ∈ (𝒫 𝑐 ∩ Fin) ∧ 𝑠 ∈ (𝒫 𝑐 ∩ Fin)) ∧ (𝑆 ⊆ ∪ 𝑛 ∧ 𝑇 ⊆ ∪ 𝑠))) → 𝑋 ⊆ (∪ 𝑛 ∪ ∪ 𝑠))
68		uniun 4891	. . . . . . . . . . . 12 ⊢ ∪ (𝑛 ∪ 𝑠) = (∪ 𝑛 ∪ ∪ 𝑠)
69	67, 68	sseqtrrdi 3980	. . . . . . . . . . 11 ⊢ ((((𝐽 ∈ Top ∧ 𝑋 = (𝑆 ∪ 𝑇)) ∧ (𝑐 ∈ 𝒫 𝐽 ∧ 𝑋 = ∪ 𝑐)) ∧ ((𝑛 ∈ (𝒫 𝑐 ∩ Fin) ∧ 𝑠 ∈ (𝒫 𝑐 ∩ Fin)) ∧ (𝑆 ⊆ ∪ 𝑛 ∧ 𝑇 ⊆ ∪ 𝑠))) → 𝑋 ⊆ ∪ (𝑛 ∪ 𝑠))
70		elpwi 4565	. . . . . . . . . . . . . . 15 ⊢ (𝑐 ∈ 𝒫 𝐽 → 𝑐 ⊆ 𝐽)
71	70	adantr 485	. . . . . . . . . . . . . 14 ⊢ ((𝑐 ∈ 𝒫 𝐽 ∧ 𝑋 = ∪ 𝑐) → 𝑐 ⊆ 𝐽)
72	71	ad2antlr 739	. . . . . . . . . . . . 13 ⊢ ((((𝐽 ∈ Top ∧ 𝑋 = (𝑆 ∪ 𝑇)) ∧ (𝑐 ∈ 𝒫 𝐽 ∧ 𝑋 = ∪ 𝑐)) ∧ ((𝑛 ∈ (𝒫 𝑐 ∩ Fin) ∧ 𝑠 ∈ (𝒫 𝑐 ∩ Fin)) ∧ (𝑆 ⊆ ∪ 𝑛 ∧ 𝑇 ⊆ ∪ 𝑠))) → 𝑐 ⊆ 𝐽)
73	47, 72	sstrd 3949	. . . . . . . . . . . 12 ⊢ ((((𝐽 ∈ Top ∧ 𝑋 = (𝑆 ∪ 𝑇)) ∧ (𝑐 ∈ 𝒫 𝐽 ∧ 𝑋 = ∪ 𝑐)) ∧ ((𝑛 ∈ (𝒫 𝑐 ∩ Fin) ∧ 𝑠 ∈ (𝒫 𝑐 ∩ Fin)) ∧ (𝑆 ⊆ ∪ 𝑛 ∧ 𝑇 ⊆ ∪ 𝑠))) → (𝑛 ∪ 𝑠) ⊆ 𝐽)
74		uniss 4876	. . . . . . . . . . . . 13 ⊢ ((𝑛 ∪ 𝑠) ⊆ 𝐽 → ∪ (𝑛 ∪ 𝑠) ⊆ ∪ 𝐽)
75	74, 7	sseqtrrdi 3980	. . . . . . . . . . . 12 ⊢ ((𝑛 ∪ 𝑠) ⊆ 𝐽 → ∪ (𝑛 ∪ 𝑠) ⊆ 𝑋)
76	73, 75	syl 18	. . . . . . . . . . 11 ⊢ ((((𝐽 ∈ Top ∧ 𝑋 = (𝑆 ∪ 𝑇)) ∧ (𝑐 ∈ 𝒫 𝐽 ∧ 𝑋 = ∪ 𝑐)) ∧ ((𝑛 ∈ (𝒫 𝑐 ∩ Fin) ∧ 𝑠 ∈ (𝒫 𝑐 ∩ Fin)) ∧ (𝑆 ⊆ ∪ 𝑛 ∧ 𝑇 ⊆ ∪ 𝑠))) → ∪ (𝑛 ∪ 𝑠) ⊆ 𝑋)
77	69, 76	eqssd 3956	. . . . . . . . . 10 ⊢ ((((𝐽 ∈ Top ∧ 𝑋 = (𝑆 ∪ 𝑇)) ∧ (𝑐 ∈ 𝒫 𝐽 ∧ 𝑋 = ∪ 𝑐)) ∧ ((𝑛 ∈ (𝒫 𝑐 ∩ Fin) ∧ 𝑠 ∈ (𝒫 𝑐 ∩ Fin)) ∧ (𝑆 ⊆ ∪ 𝑛 ∧ 𝑇 ⊆ ∪ 𝑠))) → 𝑋 = ∪ (𝑛 ∪ 𝑠))
78		unieq 4879	. . . . . . . . . . 11 ⊢ (𝑑 = (𝑛 ∪ 𝑠) → ∪ 𝑑 = ∪ (𝑛 ∪ 𝑠))
79	78	rspceeqv 3607	. . . . . . . . . 10 ⊢ (((𝑛 ∪ 𝑠) ∈ (𝒫 𝑐 ∩ Fin) ∧ 𝑋 = ∪ (𝑛 ∪ 𝑠)) → ∃𝑑 ∈ (𝒫 𝑐 ∩ Fin)𝑋 = ∪ 𝑑)
80	59, 77, 79	syl2anc 595	. . . . . . . . 9 ⊢ ((((𝐽 ∈ Top ∧ 𝑋 = (𝑆 ∪ 𝑇)) ∧ (𝑐 ∈ 𝒫 𝐽 ∧ 𝑋 = ∪ 𝑐)) ∧ ((𝑛 ∈ (𝒫 𝑐 ∩ Fin) ∧ 𝑠 ∈ (𝒫 𝑐 ∩ Fin)) ∧ (𝑆 ⊆ ∪ 𝑛 ∧ 𝑇 ⊆ ∪ 𝑠))) → ∃𝑑 ∈ (𝒫 𝑐 ∩ Fin)𝑋 = ∪ 𝑑)
81	80	exp32 425	. . . . . . . 8 ⊢ (((𝐽 ∈ Top ∧ 𝑋 = (𝑆 ∪ 𝑇)) ∧ (𝑐 ∈ 𝒫 𝐽 ∧ 𝑋 = ∪ 𝑐)) → ((𝑛 ∈ (𝒫 𝑐 ∩ Fin) ∧ 𝑠 ∈ (𝒫 𝑐 ∩ Fin)) → ((𝑆 ⊆ ∪ 𝑛 ∧ 𝑇 ⊆ ∪ 𝑠) → ∃𝑑 ∈ (𝒫 𝑐 ∩ Fin)𝑋 = ∪ 𝑑)))
82	81	rexlimdvv 3221	. . . . . . 7 ⊢ (((𝐽 ∈ Top ∧ 𝑋 = (𝑆 ∪ 𝑇)) ∧ (𝑐 ∈ 𝒫 𝐽 ∧ 𝑋 = ∪ 𝑐)) → (∃𝑛 ∈ (𝒫 𝑐 ∩ Fin)∃𝑠 ∈ (𝒫 𝑐 ∩ Fin)(𝑆 ⊆ ∪ 𝑛 ∧ 𝑇 ⊆ ∪ 𝑠) → ∃𝑑 ∈ (𝒫 𝑐 ∩ Fin)𝑋 = ∪ 𝑑))
83	39, 82	biimtrrid 246	. . . . . 6 ⊢ (((𝐽 ∈ Top ∧ 𝑋 = (𝑆 ∪ 𝑇)) ∧ (𝑐 ∈ 𝒫 𝐽 ∧ 𝑋 = ∪ 𝑐)) → ((∃𝑛 ∈ (𝒫 𝑐 ∩ Fin)𝑆 ⊆ ∪ 𝑛 ∧ ∃𝑠 ∈ (𝒫 𝑐 ∩ Fin)𝑇 ⊆ ∪ 𝑠) → ∃𝑑 ∈ (𝒫 𝑐 ∩ Fin)𝑋 = ∪ 𝑑))
84	21, 38, 83	syl2and 619	. . . . 5 ⊢ (((𝐽 ∈ Top ∧ 𝑋 = (𝑆 ∪ 𝑇)) ∧ (𝑐 ∈ 𝒫 𝐽 ∧ 𝑋 = ∪ 𝑐)) → (((𝐽 ↾t 𝑆) ∈ Comp ∧ (𝐽 ↾t 𝑇) ∈ Comp) → ∃𝑑 ∈ (𝒫 𝑐 ∩ Fin)𝑋 = ∪ 𝑑))
85	84	impancom 456	. . . 4 ⊢ (((𝐽 ∈ Top ∧ 𝑋 = (𝑆 ∪ 𝑇)) ∧ ((𝐽 ↾t 𝑆) ∈ Comp ∧ (𝐽 ↾t 𝑇) ∈ Comp)) → ((𝑐 ∈ 𝒫 𝐽 ∧ 𝑋 = ∪ 𝑐) → ∃𝑑 ∈ (𝒫 𝑐 ∩ Fin)𝑋 = ∪ 𝑑))
86	85	expd 420	. . 3 ⊢ (((𝐽 ∈ Top ∧ 𝑋 = (𝑆 ∪ 𝑇)) ∧ ((𝐽 ↾t 𝑆) ∈ Comp ∧ (𝐽 ↾t 𝑇) ∈ Comp)) → (𝑐 ∈ 𝒫 𝐽 → (𝑋 = ∪ 𝑐 → ∃𝑑 ∈ (𝒫 𝑐 ∩ Fin)𝑋 = ∪ 𝑑)))
87	86	ralrimiv 3156	. 2 ⊢ (((𝐽 ∈ Top ∧ 𝑋 = (𝑆 ∪ 𝑇)) ∧ ((𝐽 ↾t 𝑆) ∈ Comp ∧ (𝐽 ↾t 𝑇) ∈ Comp)) → ∀𝑐 ∈ 𝒫 𝐽(𝑋 = ∪ 𝑐 → ∃𝑑 ∈ (𝒫 𝑐 ∩ Fin)𝑋 = ∪ 𝑑))
88	7	iscmp 23506	. 2 ⊢ (𝐽 ∈ Comp ↔ (𝐽 ∈ Top ∧ ∀𝑐 ∈ 𝒫 𝐽(𝑋 = ∪ 𝑐 → ∃𝑑 ∈ (𝒫 𝑐 ∩ Fin)𝑋 = ∪ 𝑑)))
89	1, 87, 88	sylanbrc 594	1 ⊢ (((𝐽 ∈ Top ∧ 𝑋 = (𝑆 ∪ 𝑇)) ∧ ((𝐽 ↾t 𝑆) ∈ Comp ∧ (𝐽 ↾t 𝑇) ∈ Comp)) → 𝐽 ∈ Comp)

Syntax hints:   → wi 4   ↔ wb 209   ∧ wa 400   = wceq 1563   ∈ wcel 2145  ∀wral 3079  ∃wrex 3089   ∪ cun 3905   ∩ cin 3906   ⊆ wss 3907  𝒫 cpw 4558  ∪ cuni 4868  (class class class)co 7400  Fincfn 8931   ↾_t crest 17463  Topctop 23011  Compccmp 23504

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1818  ax-4 1832  ax-5 1933  ax-6 1990  ax-7 2031  ax-8 2147  ax-9 2155  ax-10 2178  ax-11 2194  ax-12 2215  ax-ext 2737  ax-rep 5232  ax-sep 5251  ax-nul 5261  ax-pow 5327  ax-pr 5395  ax-un 7722

This theorem depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3or 1102  df-3an 1103  df-tru 1566  df-fal 1576  df-ex 1803  df-nf 1807  df-sb 2094  df-mo 2569  df-eu 2599  df-clab 2744  df-cleq 2757  df-clel 2840  df-nfc 2914  df-ne 2961  df-ral 3080  df-rex 3090  df-reu 3371  df-rab 3418  df-v 3459  df-sbc 3748  df-csb 3856  df-dif 3910  df-un 3912  df-in 3914  df-ss 3924  df-pss 3927  df-nul 4289  df-if 4484  df-pw 4560  df-sn 4586  df-pr 4588  df-op 4592  df-uni 4869  df-int 4909  df-iun 4954  df-br 5106  df-opab 5168  df-mpt 5187  df-tr 5213  df-id 5547  df-eprel 5552  df-po 5560  df-so 5561  df-fr 5605  df-we 5607  df-xp 5658  df-rel 5659  df-cnv 5660  df-co 5661  df-dm 5662  df-rn 5663  df-res 5664  df-ima 5665  df-ord 6353  df-on 6354  df-lim 6355  df-suc 6356  df-iota 6481  df-fun 6527  df-fn 6528  df-f 6529  df-f1 6530  df-fo 6531  df-f1o 6532  df-fv 6533  df-ov 7403  df-oprab 7404  df-mpo 7405  df-om 7851  df-1st 7974  df-2nd 7975  df-1o 8441  df-en 8932  df-dom 8933  df-fin 8935  df-fi 9359  df-rest 17465  df-topgen 17486  df-top 23012  df-topon 23029  df-bases 23064  df-cmp 23505

This theorem is referenced by:  fiuncmp  23522