connpconn - Mathbox for Mario Carneiro

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Theorem connpconn 35417

Description: A connected and locally path-connected space is path-connected. (Contributed by Mario Carneiro, 7-Jul-2015.)

**Assertion**
Ref	Expression
connpconn	⊢ ((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) → 𝐽 ∈ PConn)

Proof of Theorem connpconn Dummy variables 𝑥 𝑓 𝑦 𝑧 𝑔 ℎ 𝑠 𝑢 𝑤 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		conntop 23382	. . 3 ⊢ (𝐽 ∈ Conn → 𝐽 ∈ Top)
2	1	adantr 480	. 2 ⊢ ((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) → 𝐽 ∈ Top)
3		eqid 2736	. . . . . 6 ⊢ ∪ 𝐽 = ∪ 𝐽
4		simpll 767	. . . . . 6 ⊢ (((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ 𝑥 ∈ ∪ 𝐽) → 𝐽 ∈ Conn)
5		inss1 4177	. . . . . . 7 ⊢ (𝐽 ∩ (Clsd‘𝐽)) ⊆ 𝐽
6		simplr 769	. . . . . . . . . . . 12 ⊢ (((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) → 𝐽 ∈ 𝑛-Locally PConn)
7	1	ad2antrr 727	. . . . . . . . . . . . 13 ⊢ (((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) → 𝐽 ∈ Top)
8	3	topopn 22871	. . . . . . . . . . . . 13 ⊢ (𝐽 ∈ Top → ∪ 𝐽 ∈ 𝐽)
9	7, 8	syl 17	. . . . . . . . . . . 12 ⊢ (((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) → ∪ 𝐽 ∈ 𝐽)
10		simprr 773	. . . . . . . . . . . 12 ⊢ (((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) → 𝑧 ∈ ∪ 𝐽)
11		nlly2i 23441	. . . . . . . . . . . 12 ⊢ ((𝐽 ∈ 𝑛-Locally PConn ∧ ∪ 𝐽 ∈ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽) → ∃𝑠 ∈ 𝒫 ∪ 𝐽∃𝑢 ∈ 𝐽 (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))
12	6, 9, 10, 11	syl3anc 1374	. . . . . . . . . . 11 ⊢ (((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) → ∃𝑠 ∈ 𝒫 ∪ 𝐽∃𝑢 ∈ 𝐽 (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))
13		simprr1 1223	. . . . . . . . . . . . . . 15 ⊢ ((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) → 𝑧 ∈ 𝑢)
14		eqeq2 2748	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑦 = 𝑤 → ((𝑓‘1) = 𝑦 ↔ (𝑓‘1) = 𝑤))
15	14	anbi2d 631	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑦 = 𝑤 → (((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦) ↔ ((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑤)))
16	15	rexbidv 3161	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑦 = 𝑤 → (∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦) ↔ ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑤)))
17	16	elrab 3634	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑤 ∈ {𝑦 ∈ ∪ 𝐽 ∣ ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)} ↔ (𝑤 ∈ ∪ 𝐽 ∧ ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑤)))
18	17	simprbi 497	. . . . . . . . . . . . . . . . 17 ⊢ (𝑤 ∈ {𝑦 ∈ ∪ 𝐽 ∣ ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)} → ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑤))
19		simprr3 1225	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ ((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) → (𝐽 ↾_t 𝑠) ∈ PConn)
20	19	adantr 480	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ (((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) ∧ ((𝑤 ∈ 𝑢 ∧ (𝑔 ∈ (II Cn 𝐽) ∧ ((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤))) ∧ 𝑦 ∈ 𝑢)) → (𝐽 ↾_t 𝑠) ∈ PConn)
21		simprr2 1224	. . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ⊢ ((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) → 𝑢 ⊆ 𝑠)
22	21	adantr 480	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ (((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) ∧ ((𝑤 ∈ 𝑢 ∧ (𝑔 ∈ (II Cn 𝐽) ∧ ((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤))) ∧ 𝑦 ∈ 𝑢)) → 𝑢 ⊆ 𝑠)
23		simprll 779	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ (((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) ∧ ((𝑤 ∈ 𝑢 ∧ (𝑔 ∈ (II Cn 𝐽) ∧ ((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤))) ∧ 𝑦 ∈ 𝑢)) → 𝑤 ∈ 𝑢)
24	22, 23	sseldd 3922	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ (((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) ∧ ((𝑤 ∈ 𝑢 ∧ (𝑔 ∈ (II Cn 𝐽) ∧ ((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤))) ∧ 𝑦 ∈ 𝑢)) → 𝑤 ∈ 𝑠)
25	7	ad2antrr 727	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ (((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) ∧ ((𝑤 ∈ 𝑢 ∧ (𝑔 ∈ (II Cn 𝐽) ∧ ((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤))) ∧ 𝑦 ∈ 𝑢)) → 𝐽 ∈ Top)
26		elpwi 4548	. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 ⊢ (𝑠 ∈ 𝒫 ∪ 𝐽 → 𝑠 ⊆ ∪ 𝐽)
27	26	ad2antrl 729	. . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ⊢ ((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) → 𝑠 ⊆ ∪ 𝐽)
28	27	adantr 480	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ (((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) ∧ ((𝑤 ∈ 𝑢 ∧ (𝑔 ∈ (II Cn 𝐽) ∧ ((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤))) ∧ 𝑦 ∈ 𝑢)) → 𝑠 ⊆ ∪ 𝐽)
29	3	restuni 23127	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ ((𝐽 ∈ Top ∧ 𝑠 ⊆ ∪ 𝐽) → 𝑠 = ∪ (𝐽 ↾_t 𝑠))
30	25, 28, 29	syl2anc 585	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ (((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) ∧ ((𝑤 ∈ 𝑢 ∧ (𝑔 ∈ (II Cn 𝐽) ∧ ((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤))) ∧ 𝑦 ∈ 𝑢)) → 𝑠 = ∪ (𝐽 ↾_t 𝑠))
31	24, 30	eleqtrd 2838	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ (((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) ∧ ((𝑤 ∈ 𝑢 ∧ (𝑔 ∈ (II Cn 𝐽) ∧ ((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤))) ∧ 𝑦 ∈ 𝑢)) → 𝑤 ∈ ∪ (𝐽 ↾_t 𝑠))
32		simprr 773	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ (((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) ∧ ((𝑤 ∈ 𝑢 ∧ (𝑔 ∈ (II Cn 𝐽) ∧ ((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤))) ∧ 𝑦 ∈ 𝑢)) → 𝑦 ∈ 𝑢)
33	22, 32	sseldd 3922	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ (((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) ∧ ((𝑤 ∈ 𝑢 ∧ (𝑔 ∈ (II Cn 𝐽) ∧ ((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤))) ∧ 𝑦 ∈ 𝑢)) → 𝑦 ∈ 𝑠)
34	33, 30	eleqtrd 2838	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ (((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) ∧ ((𝑤 ∈ 𝑢 ∧ (𝑔 ∈ (II Cn 𝐽) ∧ ((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤))) ∧ 𝑦 ∈ 𝑢)) → 𝑦 ∈ ∪ (𝐽 ↾_t 𝑠))
35		eqid 2736	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ ∪ (𝐽 ↾_t 𝑠) = ∪ (𝐽 ↾_t 𝑠)
36	35	pconncn 35406	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ (((𝐽 ↾_t 𝑠) ∈ PConn ∧ 𝑤 ∈ ∪ (𝐽 ↾_t 𝑠) ∧ 𝑦 ∈ ∪ (𝐽 ↾_t 𝑠)) → ∃ℎ ∈ (II Cn (𝐽 ↾_t 𝑠))((ℎ‘0) = 𝑤 ∧ (ℎ‘1) = 𝑦))
37	20, 31, 34, 36	syl3anc 1374	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ (((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) ∧ ((𝑤 ∈ 𝑢 ∧ (𝑔 ∈ (II Cn 𝐽) ∧ ((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤))) ∧ 𝑦 ∈ 𝑢)) → ∃ℎ ∈ (II Cn (𝐽 ↾_t 𝑠))((ℎ‘0) = 𝑤 ∧ (ℎ‘1) = 𝑦))
38		simplrl 777	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ (((𝑤 ∈ 𝑢 ∧ (𝑔 ∈ (II Cn 𝐽) ∧ ((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤))) ∧ 𝑦 ∈ 𝑢) → 𝑔 ∈ (II Cn 𝐽))
39	38	ad2antlr 728	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ ((((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) ∧ ((𝑤 ∈ 𝑢 ∧ (𝑔 ∈ (II Cn 𝐽) ∧ ((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤))) ∧ 𝑦 ∈ 𝑢)) ∧ (ℎ ∈ (II Cn (𝐽 ↾_t 𝑠)) ∧ ((ℎ‘0) = 𝑤 ∧ (ℎ‘1) = 𝑦))) → 𝑔 ∈ (II Cn 𝐽))
40	25	adantr 480	. . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ⊢ ((((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) ∧ ((𝑤 ∈ 𝑢 ∧ (𝑔 ∈ (II Cn 𝐽) ∧ ((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤))) ∧ 𝑦 ∈ 𝑢)) ∧ (ℎ ∈ (II Cn (𝐽 ↾_t 𝑠)) ∧ ((ℎ‘0) = 𝑤 ∧ (ℎ‘1) = 𝑦))) → 𝐽 ∈ Top)
41		cnrest2r 23252	. . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ⊢ (𝐽 ∈ Top → (II Cn (𝐽 ↾_t 𝑠)) ⊆ (II Cn 𝐽))
42	40, 41	syl 17	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ ((((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) ∧ ((𝑤 ∈ 𝑢 ∧ (𝑔 ∈ (II Cn 𝐽) ∧ ((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤))) ∧ 𝑦 ∈ 𝑢)) ∧ (ℎ ∈ (II Cn (𝐽 ↾_t 𝑠)) ∧ ((ℎ‘0) = 𝑤 ∧ (ℎ‘1) = 𝑦))) → (II Cn (𝐽 ↾_t 𝑠)) ⊆ (II Cn 𝐽))
43		simprl 771	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ ((((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) ∧ ((𝑤 ∈ 𝑢 ∧ (𝑔 ∈ (II Cn 𝐽) ∧ ((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤))) ∧ 𝑦 ∈ 𝑢)) ∧ (ℎ ∈ (II Cn (𝐽 ↾_t 𝑠)) ∧ ((ℎ‘0) = 𝑤 ∧ (ℎ‘1) = 𝑦))) → ℎ ∈ (II Cn (𝐽 ↾_t 𝑠)))
44	42, 43	sseldd 3922	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ ((((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) ∧ ((𝑤 ∈ 𝑢 ∧ (𝑔 ∈ (II Cn 𝐽) ∧ ((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤))) ∧ 𝑦 ∈ 𝑢)) ∧ (ℎ ∈ (II Cn (𝐽 ↾_t 𝑠)) ∧ ((ℎ‘0) = 𝑤 ∧ (ℎ‘1) = 𝑦))) → ℎ ∈ (II Cn 𝐽))
45		simplrr 778	. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 ⊢ (((𝑤 ∈ 𝑢 ∧ (𝑔 ∈ (II Cn 𝐽) ∧ ((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤))) ∧ 𝑦 ∈ 𝑢) → ((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤))
46	45	ad2antlr 728	. . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ⊢ ((((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) ∧ ((𝑤 ∈ 𝑢 ∧ (𝑔 ∈ (II Cn 𝐽) ∧ ((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤))) ∧ 𝑦 ∈ 𝑢)) ∧ (ℎ ∈ (II Cn (𝐽 ↾_t 𝑠)) ∧ ((ℎ‘0) = 𝑤 ∧ (ℎ‘1) = 𝑦))) → ((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤))
47	46	simprd 495	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ ((((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) ∧ ((𝑤 ∈ 𝑢 ∧ (𝑔 ∈ (II Cn 𝐽) ∧ ((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤))) ∧ 𝑦 ∈ 𝑢)) ∧ (ℎ ∈ (II Cn (𝐽 ↾_t 𝑠)) ∧ ((ℎ‘0) = 𝑤 ∧ (ℎ‘1) = 𝑦))) → (𝑔‘1) = 𝑤)
48		simprrl 781	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ ((((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) ∧ ((𝑤 ∈ 𝑢 ∧ (𝑔 ∈ (II Cn 𝐽) ∧ ((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤))) ∧ 𝑦 ∈ 𝑢)) ∧ (ℎ ∈ (II Cn (𝐽 ↾_t 𝑠)) ∧ ((ℎ‘0) = 𝑤 ∧ (ℎ‘1) = 𝑦))) → (ℎ‘0) = 𝑤)
49	47, 48	eqtr4d 2774	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ ((((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) ∧ ((𝑤 ∈ 𝑢 ∧ (𝑔 ∈ (II Cn 𝐽) ∧ ((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤))) ∧ 𝑦 ∈ 𝑢)) ∧ (ℎ ∈ (II Cn (𝐽 ↾_t 𝑠)) ∧ ((ℎ‘0) = 𝑤 ∧ (ℎ‘1) = 𝑦))) → (𝑔‘1) = (ℎ‘0))
50	39, 44, 49	pcocn 24984	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ ((((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) ∧ ((𝑤 ∈ 𝑢 ∧ (𝑔 ∈ (II Cn 𝐽) ∧ ((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤))) ∧ 𝑦 ∈ 𝑢)) ∧ (ℎ ∈ (II Cn (𝐽 ↾_t 𝑠)) ∧ ((ℎ‘0) = 𝑤 ∧ (ℎ‘1) = 𝑦))) → (𝑔(*_𝑝‘𝐽)ℎ) ∈ (II Cn 𝐽))
51	39, 44	pco0 24981	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ ((((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) ∧ ((𝑤 ∈ 𝑢 ∧ (𝑔 ∈ (II Cn 𝐽) ∧ ((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤))) ∧ 𝑦 ∈ 𝑢)) ∧ (ℎ ∈ (II Cn (𝐽 ↾_t 𝑠)) ∧ ((ℎ‘0) = 𝑤 ∧ (ℎ‘1) = 𝑦))) → ((𝑔(*_𝑝‘𝐽)ℎ)‘0) = (𝑔‘0))
52	46	simpld 494	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ ((((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) ∧ ((𝑤 ∈ 𝑢 ∧ (𝑔 ∈ (II Cn 𝐽) ∧ ((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤))) ∧ 𝑦 ∈ 𝑢)) ∧ (ℎ ∈ (II Cn (𝐽 ↾_t 𝑠)) ∧ ((ℎ‘0) = 𝑤 ∧ (ℎ‘1) = 𝑦))) → (𝑔‘0) = 𝑥)
53	51, 52	eqtrd 2771	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ ((((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) ∧ ((𝑤 ∈ 𝑢 ∧ (𝑔 ∈ (II Cn 𝐽) ∧ ((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤))) ∧ 𝑦 ∈ 𝑢)) ∧ (ℎ ∈ (II Cn (𝐽 ↾_t 𝑠)) ∧ ((ℎ‘0) = 𝑤 ∧ (ℎ‘1) = 𝑦))) → ((𝑔(*_𝑝‘𝐽)ℎ)‘0) = 𝑥)
54	39, 44	pco1 24982	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ ((((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) ∧ ((𝑤 ∈ 𝑢 ∧ (𝑔 ∈ (II Cn 𝐽) ∧ ((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤))) ∧ 𝑦 ∈ 𝑢)) ∧ (ℎ ∈ (II Cn (𝐽 ↾_t 𝑠)) ∧ ((ℎ‘0) = 𝑤 ∧ (ℎ‘1) = 𝑦))) → ((𝑔(*_𝑝‘𝐽)ℎ)‘1) = (ℎ‘1))
55		simprrr 782	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ ((((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) ∧ ((𝑤 ∈ 𝑢 ∧ (𝑔 ∈ (II Cn 𝐽) ∧ ((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤))) ∧ 𝑦 ∈ 𝑢)) ∧ (ℎ ∈ (II Cn (𝐽 ↾_t 𝑠)) ∧ ((ℎ‘0) = 𝑤 ∧ (ℎ‘1) = 𝑦))) → (ℎ‘1) = 𝑦)
56	54, 55	eqtrd 2771	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ ((((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) ∧ ((𝑤 ∈ 𝑢 ∧ (𝑔 ∈ (II Cn 𝐽) ∧ ((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤))) ∧ 𝑦 ∈ 𝑢)) ∧ (ℎ ∈ (II Cn (𝐽 ↾_t 𝑠)) ∧ ((ℎ‘0) = 𝑤 ∧ (ℎ‘1) = 𝑦))) → ((𝑔(*_𝑝‘𝐽)ℎ)‘1) = 𝑦)
57		fveq1 6839	. . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ⊢ (𝑓 = (𝑔(_𝑝‘𝐽)ℎ) → (𝑓‘0) = ((𝑔(_𝑝‘𝐽)ℎ)‘0))
58	57	eqeq1d 2738	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ (𝑓 = (𝑔(_𝑝‘𝐽)ℎ) → ((𝑓‘0) = 𝑥 ↔ ((𝑔(_𝑝‘𝐽)ℎ)‘0) = 𝑥))
59		fveq1 6839	. . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ⊢ (𝑓 = (𝑔(_𝑝‘𝐽)ℎ) → (𝑓‘1) = ((𝑔(_𝑝‘𝐽)ℎ)‘1))
60	59	eqeq1d 2738	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ (𝑓 = (𝑔(_𝑝‘𝐽)ℎ) → ((𝑓‘1) = 𝑦 ↔ ((𝑔(_𝑝‘𝐽)ℎ)‘1) = 𝑦))
61	58, 60	anbi12d 633	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ (𝑓 = (𝑔(_𝑝‘𝐽)ℎ) → (((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦) ↔ (((𝑔(_𝑝‘𝐽)ℎ)‘0) = 𝑥 ∧ ((𝑔(*_𝑝‘𝐽)ℎ)‘1) = 𝑦)))
62	61	rspcev 3564	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ (((𝑔(_𝑝‘𝐽)ℎ) ∈ (II Cn 𝐽) ∧ (((𝑔(_𝑝‘𝐽)ℎ)‘0) = 𝑥 ∧ ((𝑔(*_𝑝‘𝐽)ℎ)‘1) = 𝑦)) → ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦))
63	50, 53, 56, 62	syl12anc 837	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ ((((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) ∧ ((𝑤 ∈ 𝑢 ∧ (𝑔 ∈ (II Cn 𝐽) ∧ ((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤))) ∧ 𝑦 ∈ 𝑢)) ∧ (ℎ ∈ (II Cn (𝐽 ↾_t 𝑠)) ∧ ((ℎ‘0) = 𝑤 ∧ (ℎ‘1) = 𝑦))) → ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦))
64	37, 63	rexlimddv 3144	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) ∧ ((𝑤 ∈ 𝑢 ∧ (𝑔 ∈ (II Cn 𝐽) ∧ ((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤))) ∧ 𝑦 ∈ 𝑢)) → ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦))
65	64	anassrs 467	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ ((((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) ∧ (𝑤 ∈ 𝑢 ∧ (𝑔 ∈ (II Cn 𝐽) ∧ ((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤)))) ∧ 𝑦 ∈ 𝑢) → ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦))
66	65	ralrimiva 3129	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) ∧ (𝑤 ∈ 𝑢 ∧ (𝑔 ∈ (II Cn 𝐽) ∧ ((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤)))) → ∀𝑦 ∈ 𝑢 ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦))
67	66	anassrs 467	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) ∧ 𝑤 ∈ 𝑢) ∧ (𝑔 ∈ (II Cn 𝐽) ∧ ((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤))) → ∀𝑦 ∈ 𝑢 ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦))
68	67	rexlimdvaa 3139	. . . . . . . . . . . . . . . . . . 19 ⊢ (((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) ∧ 𝑤 ∈ 𝑢) → (∃𝑔 ∈ (II Cn 𝐽)((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤) → ∀𝑦 ∈ 𝑢 ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)))
69	21	adantr 480	. . . . . . . . . . . . . . . . . . . 20 ⊢ (((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) ∧ 𝑤 ∈ 𝑢) → 𝑢 ⊆ 𝑠)
70		simplrl 777	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) ∧ 𝑤 ∈ 𝑢) → 𝑠 ∈ 𝒫 ∪ 𝐽)
71	70, 26	syl 17	. . . . . . . . . . . . . . . . . . . 20 ⊢ (((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) ∧ 𝑤 ∈ 𝑢) → 𝑠 ⊆ ∪ 𝐽)
72	69, 71	sstrd 3932	. . . . . . . . . . . . . . . . . . 19 ⊢ (((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) ∧ 𝑤 ∈ 𝑢) → 𝑢 ⊆ ∪ 𝐽)
73	68, 72	jctild 525	. . . . . . . . . . . . . . . . . 18 ⊢ (((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) ∧ 𝑤 ∈ 𝑢) → (∃𝑔 ∈ (II Cn 𝐽)((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤) → (𝑢 ⊆ ∪ 𝐽 ∧ ∀𝑦 ∈ 𝑢 ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦))))
74		fveq1 6839	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑓 = 𝑔 → (𝑓‘0) = (𝑔‘0))
75	74	eqeq1d 2738	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑓 = 𝑔 → ((𝑓‘0) = 𝑥 ↔ (𝑔‘0) = 𝑥))
76		fveq1 6839	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑓 = 𝑔 → (𝑓‘1) = (𝑔‘1))
77	76	eqeq1d 2738	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑓 = 𝑔 → ((𝑓‘1) = 𝑤 ↔ (𝑔‘1) = 𝑤))
78	75, 77	anbi12d 633	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑓 = 𝑔 → (((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑤) ↔ ((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤)))
79	78	cbvrexvw 3216	. . . . . . . . . . . . . . . . . 18 ⊢ (∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑤) ↔ ∃𝑔 ∈ (II Cn 𝐽)((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤))
80		ssrab 4011	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑢 ⊆ {𝑦 ∈ ∪ 𝐽 ∣ ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)} ↔ (𝑢 ⊆ ∪ 𝐽 ∧ ∀𝑦 ∈ 𝑢 ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)))
81	73, 79, 80	3imtr4g 296	. . . . . . . . . . . . . . . . 17 ⊢ (((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) ∧ 𝑤 ∈ 𝑢) → (∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑤) → 𝑢 ⊆ {𝑦 ∈ ∪ 𝐽 ∣ ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)}))
82	18, 81	syl5 34	. . . . . . . . . . . . . . . 16 ⊢ (((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) ∧ 𝑤 ∈ 𝑢) → (𝑤 ∈ {𝑦 ∈ ∪ 𝐽 ∣ ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)} → 𝑢 ⊆ {𝑦 ∈ ∪ 𝐽 ∣ ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)}))
83	82	ralrimiva 3129	. . . . . . . . . . . . . . 15 ⊢ ((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) → ∀𝑤 ∈ 𝑢 (𝑤 ∈ {𝑦 ∈ ∪ 𝐽 ∣ ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)} → 𝑢 ⊆ {𝑦 ∈ ∪ 𝐽 ∣ ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)}))
84	13, 83	jca 511	. . . . . . . . . . . . . 14 ⊢ ((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ (𝑠 ∈ 𝒫 ∪ 𝐽 ∧ (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn))) → (𝑧 ∈ 𝑢 ∧ ∀𝑤 ∈ 𝑢 (𝑤 ∈ {𝑦 ∈ ∪ 𝐽 ∣ ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)} → 𝑢 ⊆ {𝑦 ∈ ∪ 𝐽 ∣ ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)})))
85	84	expr 456	. . . . . . . . . . . . 13 ⊢ ((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ 𝑠 ∈ 𝒫 ∪ 𝐽) → ((𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn) → (𝑧 ∈ 𝑢 ∧ ∀𝑤 ∈ 𝑢 (𝑤 ∈ {𝑦 ∈ ∪ 𝐽 ∣ ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)} → 𝑢 ⊆ {𝑦 ∈ ∪ 𝐽 ∣ ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)}))))
86	85	reximdv 3152	. . . . . . . . . . . 12 ⊢ ((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) ∧ 𝑠 ∈ 𝒫 ∪ 𝐽) → (∃𝑢 ∈ 𝐽 (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn) → ∃𝑢 ∈ 𝐽 (𝑧 ∈ 𝑢 ∧ ∀𝑤 ∈ 𝑢 (𝑤 ∈ {𝑦 ∈ ∪ 𝐽 ∣ ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)} → 𝑢 ⊆ {𝑦 ∈ ∪ 𝐽 ∣ ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)}))))
87	86	rexlimdva 3138	. . . . . . . . . . 11 ⊢ (((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) → (∃𝑠 ∈ 𝒫 ∪ 𝐽∃𝑢 ∈ 𝐽 (𝑧 ∈ 𝑢 ∧ 𝑢 ⊆ 𝑠 ∧ (𝐽 ↾_t 𝑠) ∈ PConn) → ∃𝑢 ∈ 𝐽 (𝑧 ∈ 𝑢 ∧ ∀𝑤 ∈ 𝑢 (𝑤 ∈ {𝑦 ∈ ∪ 𝐽 ∣ ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)} → 𝑢 ⊆ {𝑦 ∈ ∪ 𝐽 ∣ ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)}))))
88	12, 87	mpd 15	. . . . . . . . . 10 ⊢ (((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) → ∃𝑢 ∈ 𝐽 (𝑧 ∈ 𝑢 ∧ ∀𝑤 ∈ 𝑢 (𝑤 ∈ {𝑦 ∈ ∪ 𝐽 ∣ ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)} → 𝑢 ⊆ {𝑦 ∈ ∪ 𝐽 ∣ ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)})))
89	88	anassrs 467	. . . . . . . . 9 ⊢ ((((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ 𝑥 ∈ ∪ 𝐽) ∧ 𝑧 ∈ ∪ 𝐽) → ∃𝑢 ∈ 𝐽 (𝑧 ∈ 𝑢 ∧ ∀𝑤 ∈ 𝑢 (𝑤 ∈ {𝑦 ∈ ∪ 𝐽 ∣ ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)} → 𝑢 ⊆ {𝑦 ∈ ∪ 𝐽 ∣ ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)})))
90	89	ralrimiva 3129	. . . . . . . 8 ⊢ (((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ 𝑥 ∈ ∪ 𝐽) → ∀𝑧 ∈ ∪ 𝐽∃𝑢 ∈ 𝐽 (𝑧 ∈ 𝑢 ∧ ∀𝑤 ∈ 𝑢 (𝑤 ∈ {𝑦 ∈ ∪ 𝐽 ∣ ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)} → 𝑢 ⊆ {𝑦 ∈ ∪ 𝐽 ∣ ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)})))
91	1	ad2antrr 727	. . . . . . . . 9 ⊢ (((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ 𝑥 ∈ ∪ 𝐽) → 𝐽 ∈ Top)
92		ssrab2 4020	. . . . . . . . 9 ⊢ {𝑦 ∈ ∪ 𝐽 ∣ ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)} ⊆ ∪ 𝐽
93	3	isclo2 23053	. . . . . . . . 9 ⊢ ((𝐽 ∈ Top ∧ {𝑦 ∈ ∪ 𝐽 ∣ ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)} ⊆ ∪ 𝐽) → ({𝑦 ∈ ∪ 𝐽 ∣ ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)} ∈ (𝐽 ∩ (Clsd‘𝐽)) ↔ ∀𝑧 ∈ ∪ 𝐽∃𝑢 ∈ 𝐽 (𝑧 ∈ 𝑢 ∧ ∀𝑤 ∈ 𝑢 (𝑤 ∈ {𝑦 ∈ ∪ 𝐽 ∣ ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)} → 𝑢 ⊆ {𝑦 ∈ ∪ 𝐽 ∣ ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)}))))
94	91, 92, 93	sylancl 587	. . . . . . . 8 ⊢ (((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ 𝑥 ∈ ∪ 𝐽) → ({𝑦 ∈ ∪ 𝐽 ∣ ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)} ∈ (𝐽 ∩ (Clsd‘𝐽)) ↔ ∀𝑧 ∈ ∪ 𝐽∃𝑢 ∈ 𝐽 (𝑧 ∈ 𝑢 ∧ ∀𝑤 ∈ 𝑢 (𝑤 ∈ {𝑦 ∈ ∪ 𝐽 ∣ ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)} → 𝑢 ⊆ {𝑦 ∈ ∪ 𝐽 ∣ ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)}))))
95	90, 94	mpbird 257	. . . . . . 7 ⊢ (((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ 𝑥 ∈ ∪ 𝐽) → {𝑦 ∈ ∪ 𝐽 ∣ ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)} ∈ (𝐽 ∩ (Clsd‘𝐽)))
96	5, 95	sselid 3919	. . . . . 6 ⊢ (((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ 𝑥 ∈ ∪ 𝐽) → {𝑦 ∈ ∪ 𝐽 ∣ ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)} ∈ 𝐽)
97		simpr 484	. . . . . . . 8 ⊢ (((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ 𝑥 ∈ ∪ 𝐽) → 𝑥 ∈ ∪ 𝐽)
98		iitopon 24846	. . . . . . . . . 10 ⊢ II ∈ (TopOn‘(0[,]1))
99	98	a1i 11	. . . . . . . . 9 ⊢ (((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ 𝑥 ∈ ∪ 𝐽) → II ∈ (TopOn‘(0[,]1)))
100	3	toptopon 22882	. . . . . . . . . 10 ⊢ (𝐽 ∈ Top ↔ 𝐽 ∈ (TopOn‘∪ 𝐽))
101	91, 100	sylib 218	. . . . . . . . 9 ⊢ (((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ 𝑥 ∈ ∪ 𝐽) → 𝐽 ∈ (TopOn‘∪ 𝐽))
102		cnconst2 23248	. . . . . . . . 9 ⊢ ((II ∈ (TopOn‘(0[,]1)) ∧ 𝐽 ∈ (TopOn‘∪ 𝐽) ∧ 𝑥 ∈ ∪ 𝐽) → ((0[,]1) × {𝑥}) ∈ (II Cn 𝐽))
103	99, 101, 97, 102	syl3anc 1374	. . . . . . . 8 ⊢ (((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ 𝑥 ∈ ∪ 𝐽) → ((0[,]1) × {𝑥}) ∈ (II Cn 𝐽))
104		0elunit 13422	. . . . . . . . 9 ⊢ 0 ∈ (0[,]1)
105		vex 3433	. . . . . . . . . 10 ⊢ 𝑥 ∈ V
106	105	fvconst2 7159	. . . . . . . . 9 ⊢ (0 ∈ (0[,]1) → (((0[,]1) × {𝑥})‘0) = 𝑥)
107	104, 106	mp1i 13	. . . . . . . 8 ⊢ (((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ 𝑥 ∈ ∪ 𝐽) → (((0[,]1) × {𝑥})‘0) = 𝑥)
108		1elunit 13423	. . . . . . . . 9 ⊢ 1 ∈ (0[,]1)
109	105	fvconst2 7159	. . . . . . . . 9 ⊢ (1 ∈ (0[,]1) → (((0[,]1) × {𝑥})‘1) = 𝑥)
110	108, 109	mp1i 13	. . . . . . . 8 ⊢ (((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ 𝑥 ∈ ∪ 𝐽) → (((0[,]1) × {𝑥})‘1) = 𝑥)
111		eqeq2 2748	. . . . . . . . . 10 ⊢ (𝑦 = 𝑥 → ((𝑓‘1) = 𝑦 ↔ (𝑓‘1) = 𝑥))
112	111	anbi2d 631	. . . . . . . . 9 ⊢ (𝑦 = 𝑥 → (((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦) ↔ ((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑥)))
113		fveq1 6839	. . . . . . . . . . 11 ⊢ (𝑓 = ((0[,]1) × {𝑥}) → (𝑓‘0) = (((0[,]1) × {𝑥})‘0))
114	113	eqeq1d 2738	. . . . . . . . . 10 ⊢ (𝑓 = ((0[,]1) × {𝑥}) → ((𝑓‘0) = 𝑥 ↔ (((0[,]1) × {𝑥})‘0) = 𝑥))
115		fveq1 6839	. . . . . . . . . . 11 ⊢ (𝑓 = ((0[,]1) × {𝑥}) → (𝑓‘1) = (((0[,]1) × {𝑥})‘1))
116	115	eqeq1d 2738	. . . . . . . . . 10 ⊢ (𝑓 = ((0[,]1) × {𝑥}) → ((𝑓‘1) = 𝑥 ↔ (((0[,]1) × {𝑥})‘1) = 𝑥))
117	114, 116	anbi12d 633	. . . . . . . . 9 ⊢ (𝑓 = ((0[,]1) × {𝑥}) → (((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑥) ↔ ((((0[,]1) × {𝑥})‘0) = 𝑥 ∧ (((0[,]1) × {𝑥})‘1) = 𝑥)))
118	112, 117	rspc2ev 3577	. . . . . . . 8 ⊢ ((𝑥 ∈ ∪ 𝐽 ∧ ((0[,]1) × {𝑥}) ∈ (II Cn 𝐽) ∧ ((((0[,]1) × {𝑥})‘0) = 𝑥 ∧ (((0[,]1) × {𝑥})‘1) = 𝑥)) → ∃𝑦 ∈ ∪ 𝐽∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦))
119	97, 103, 107, 110, 118	syl112anc 1377	. . . . . . 7 ⊢ (((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ 𝑥 ∈ ∪ 𝐽) → ∃𝑦 ∈ ∪ 𝐽∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦))
120		rabn0 4329	. . . . . . 7 ⊢ ({𝑦 ∈ ∪ 𝐽 ∣ ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)} ≠ ∅ ↔ ∃𝑦 ∈ ∪ 𝐽∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦))
121	119, 120	sylibr 234	. . . . . 6 ⊢ (((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ 𝑥 ∈ ∪ 𝐽) → {𝑦 ∈ ∪ 𝐽 ∣ ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)} ≠ ∅)
122		inss2 4178	. . . . . . 7 ⊢ (𝐽 ∩ (Clsd‘𝐽)) ⊆ (Clsd‘𝐽)
123	122, 95	sselid 3919	. . . . . 6 ⊢ (((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ 𝑥 ∈ ∪ 𝐽) → {𝑦 ∈ ∪ 𝐽 ∣ ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)} ∈ (Clsd‘𝐽))
124	3, 4, 96, 121, 123	connclo 23380	. . . . 5 ⊢ (((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ 𝑥 ∈ ∪ 𝐽) → {𝑦 ∈ ∪ 𝐽 ∣ ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)} = ∪ 𝐽)
125	124	eqcomd 2742	. . . 4 ⊢ (((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ 𝑥 ∈ ∪ 𝐽) → ∪ 𝐽 = {𝑦 ∈ ∪ 𝐽 ∣ ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)})
126		rabid2 3422	. . . 4 ⊢ (∪ 𝐽 = {𝑦 ∈ ∪ 𝐽 ∣ ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)} ↔ ∀𝑦 ∈ ∪ 𝐽∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦))
127	125, 126	sylib 218	. . 3 ⊢ (((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ 𝑥 ∈ ∪ 𝐽) → ∀𝑦 ∈ ∪ 𝐽∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦))
128	127	ralrimiva 3129	. 2 ⊢ ((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) → ∀𝑥 ∈ ∪ 𝐽∀𝑦 ∈ ∪ 𝐽∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦))
129	3	ispconn 35405	. 2 ⊢ (𝐽 ∈ PConn ↔ (𝐽 ∈ Top ∧ ∀𝑥 ∈ ∪ 𝐽∀𝑦 ∈ ∪ 𝐽∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)))
130	2, 128, 129	sylanbrc 584	1 ⊢ ((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) → 𝐽 ∈ PConn)

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 ∧ w3a 1087 = wceq 1542 ∈ wcel 2114 ≠ wne 2932 ∀wral 3051 ∃wrex 3061 {crab 3389 ∩ cin 3888 ⊆ wss 3889 ∅c0 4273 𝒫 cpw 4541 {csn 4567 ∪ cuni 4850 × cxp 5629 ‘cfv 6498 (class class class)co 7367 0cc0 11038 1c1 11039 [,]cicc 13301 ↾_t crest 17383 Topctop 22858 TopOnctopon 22875 Clsdccld 22981 Cn ccn 23189 Conncconn 23376 𝑛-Locally cnlly 23430 IIcii 24842 *_𝑝cpco 24967 PConncpconn 35401

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2708 ax-rep 5212 ax-sep 5231 ax-nul 5241 ax-pow 5307 ax-pr 5375 ax-un 7689 ax-cnex 11094 ax-resscn 11095 ax-1cn 11096 ax-icn 11097 ax-addcl 11098 ax-addrcl 11099 ax-mulcl 11100 ax-mulrcl 11101 ax-mulcom 11102 ax-addass 11103 ax-mulass 11104 ax-distr 11105 ax-i2m1 11106 ax-1ne0 11107 ax-1rid 11108 ax-rnegex 11109 ax-rrecex 11110 ax-cnre 11111 ax-pre-lttri 11112 ax-pre-lttrn 11113 ax-pre-ltadd 11114 ax-pre-mulgt0 11115 ax-pre-sup 11116

This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-nel 3037 df-ral 3052 df-rex 3062 df-rmo 3342 df-reu 3343 df-rab 3390 df-v 3431 df-sbc 3729 df-csb 3838 df-dif 3892 df-un 3894 df-in 3896 df-ss 3906 df-pss 3909 df-nul 4274 df-if 4467 df-pw 4543 df-sn 4568 df-pr 4570 df-tp 4572 df-op 4574 df-uni 4851 df-int 4890 df-iun 4935 df-iin 4936 df-br 5086 df-opab 5148 df-mpt 5167 df-tr 5193 df-id 5526 df-eprel 5531 df-po 5539 df-so 5540 df-fr 5584 df-se 5585 df-we 5586 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-pred 6265 df-ord 6326 df-on 6327 df-lim 6328 df-suc 6329 df-iota 6454 df-fun 6500 df-fn 6501 df-f 6502 df-f1 6503 df-fo 6504 df-f1o 6505 df-fv 6506 df-isom 6507 df-riota 7324 df-ov 7370 df-oprab 7371 df-mpo 7372 df-of 7631 df-om 7818 df-1st 7942 df-2nd 7943 df-supp 8111 df-frecs 8231 df-wrecs 8262 df-recs 8311 df-rdg 8349 df-1o 8405 df-2o 8406 df-er 8643 df-map 8775 df-ixp 8846 df-en 8894 df-dom 8895 df-sdom 8896 df-fin 8897 df-fsupp 9275 df-fi 9324 df-sup 9355 df-inf 9356 df-oi 9425 df-card 9863 df-pnf 11181 df-mnf 11182 df-xr 11183 df-ltxr 11184 df-le 11185 df-sub 11379 df-neg 11380 df-div 11808 df-nn 12175 df-2 12244 df-3 12245 df-4 12246 df-5 12247 df-6 12248 df-7 12249 df-8 12250 df-9 12251 df-n0 12438 df-z 12525 df-dec 12645 df-uz 12789 df-q 12899 df-rp 12943 df-xneg 13063 df-xadd 13064 df-xmul 13065 df-ioo 13302 df-icc 13305 df-fz 13462 df-fzo 13609 df-seq 13964 df-exp 14024 df-hash 14293 df-cj 15061 df-re 15062 df-im 15063 df-sqrt 15197 df-abs 15198 df-struct 17117 df-sets 17134 df-slot 17152 df-ndx 17164 df-base 17180 df-ress 17201 df-plusg 17233 df-mulr 17234 df-starv 17235 df-sca 17236 df-vsca 17237 df-ip 17238 df-tset 17239 df-ple 17240 df-ds 17242 df-unif 17243 df-hom 17244 df-cco 17245 df-rest 17385 df-topn 17386 df-0g 17404 df-gsum 17405 df-topgen 17406 df-pt 17407 df-prds 17410 df-xrs 17466 df-qtop 17471 df-imas 17472 df-xps 17474 df-mre 17548 df-mrc 17549 df-acs 17551 df-mgm 18608 df-sgrp 18687 df-mnd 18703 df-submnd 18752 df-mulg 19044 df-cntz 19292 df-cmn 19757 df-psmet 21344 df-xmet 21345 df-met 21346 df-bl 21347 df-mopn 21348 df-cnfld 21353 df-top 22859 df-topon 22876 df-topsp 22898 df-bases 22911 df-cld 22984 df-nei 23063 df-cn 23192 df-cnp 23193 df-conn 23377 df-nlly 23432 df-tx 23527 df-hmeo 23720 df-xms 24285 df-ms 24286 df-tms 24287 df-ii 24844 df-pco 24972 df-pconn 35403

This theorem is referenced by: (None)

W3C validator