connpconn - Mathbox for Mario Carneiro

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Theorem connpconn 35727

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 23574	. . 3 ⊢ (𝐽 ∈ Conn → 𝐽 ∈ Top)
2	1	adantr 485	. 2 ⊢ ((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) → 𝐽 ∈ Top)
3		eqid 2763	. . . . . 6 ⊢ ∪ 𝐽 = ∪ 𝐽
4		simpll 778	. . . . . 6 ⊢ (((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ 𝑥 ∈ ∪ 𝐽) → 𝐽 ∈ Conn)
5		inss1 4189	. . . . . . 7 ⊢ (𝐽 ∩ (Clsd‘𝐽)) ⊆ 𝐽
6		simplr 780	. . . . . . . . . . . 12 ⊢ (((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) → 𝐽 ∈ 𝑛-Locally PConn)
7	1	ad2antrr 738	. . . . . . . . . . . . 13 ⊢ (((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) → 𝐽 ∈ Top)
8	3	topopn 23063	. . . . . . . . . . . . 13 ⊢ (𝐽 ∈ Top → ∪ 𝐽 ∈ 𝐽)
9	7, 8	syl 18	. . . . . . . . . . . 12 ⊢ (((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) → ∪ 𝐽 ∈ 𝐽)
10		simprr 784	. . . . . . . . . . . 12 ⊢ (((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ (𝑥 ∈ ∪ 𝐽 ∧ 𝑧 ∈ ∪ 𝐽)) → 𝑧 ∈ ∪ 𝐽)
11		nlly2i 23633	. . . . . . . . . . . 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 1398	. . . . . . . . . . 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 1240	. . . . . . . . . . . . . . 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 2775	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑦 = 𝑤 → ((𝑓‘1) = 𝑦 ↔ (𝑓‘1) = 𝑤))
15	14	anbi2d 641	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑦 = 𝑤 → (((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦) ↔ ((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑤)))
16	15	rexbidv 3189	. . . . . . . . . . . . . . . . . . 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 3650	. . . . . . . . . . . . . . . . . 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 502	. . . . . . . . . . . . . . . . 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 1242	. . . . . . . . . . . . . . . . . . . . . . . . . 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 485	. . . . . . . . . . . . . . . . . . . . . . . . 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 1241	. . . . . . . . . . . . . . . . . . . . . . . . . . . 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 485	. . . . . . . . . . . . . . . . . . . . . . . . . . 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 790	. . . . . . . . . . . . . . . . . . . . . . . . . . 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 3938	. . . . . . . . . . . . . . . . . . . . . . . . . 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 738	. . . . . . . . . . . . . . . . . . . . . . . . . . 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 4569	. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 ⊢ (𝑠 ∈ 𝒫 ∪ 𝐽 → 𝑠 ⊆ ∪ 𝐽)
27	26	ad2antrl 740	. . . . . . . . . . . . . . . . . . . . . . . . . . . 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 485	. . . . . . . . . . . . . . . . . . . . . . . . . . 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 23319	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ ((𝐽 ∈ Top ∧ 𝑠 ⊆ ∪ 𝐽) → 𝑠 = ∪ (𝐽 ↾_t 𝑠))
30	25, 28, 29	syl2anc 595	. . . . . . . . . . . . . . . . . . . . . . . . . 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 2865	. . . . . . . . . . . . . . . . . . . . . . . . 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 784	. . . . . . . . . . . . . . . . . . . . . . . . . . 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 3938	. . . . . . . . . . . . . . . . . . . . . . . . . 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 2865	. . . . . . . . . . . . . . . . . . . . . . . . 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 2763	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ ∪ (𝐽 ↾_t 𝑠) = ∪ (𝐽 ↾_t 𝑠)
36	35	pconncn 35716	. . . . . . . . . . . . . . . . . . . . . . . . 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 1398	. . . . . . . . . . . . . . . . . . . . . . . 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 788	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ (((𝑤 ∈ 𝑢 ∧ (𝑔 ∈ (II Cn 𝐽) ∧ ((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤))) ∧ 𝑦 ∈ 𝑢) → 𝑔 ∈ (II Cn 𝐽))
39	38	ad2antlr 739	. . . . . . . . . . . . . . . . . . . . . . . . . 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 485	. . . . . . . . . . . . . . . . . . . . . . . . . . . 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 23444	. . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ⊢ (𝐽 ∈ Top → (II Cn (𝐽 ↾_t 𝑠)) ⊆ (II Cn 𝐽))
42	40, 41	syl 18	. . . . . . . . . . . . . . . . . . . . . . . . . . 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 782	. . . . . . . . . . . . . . . . . . . . . . . . . . 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 3938	. . . . . . . . . . . . . . . . . . . . . . . . . 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 789	. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 ⊢ (((𝑤 ∈ 𝑢 ∧ (𝑔 ∈ (II Cn 𝐽) ∧ ((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤))) ∧ 𝑦 ∈ 𝑢) → ((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤))
46	45	ad2antlr 739	. . . . . . . . . . . . . . . . . . . . . . . . . . . 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 500	. . . . . . . . . . . . . . . . . . . . . . . . . . 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 792	. . . . . . . . . . . . . . . . . . . . . . . . . . 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 2801	. . . . . . . . . . . . . . . . . . . . . . . . . 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 25176	. . . . . . . . . . . . . . . . . . . . . . . . 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 25173	. . . . . . . . . . . . . . . . . . . . . . . . . 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 499	. . . . . . . . . . . . . . . . . . . . . . . . . 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 2798	. . . . . . . . . . . . . . . . . . . . . . . . 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 25174	. . . . . . . . . . . . . . . . . . . . . . . . . 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 793	. . . . . . . . . . . . . . . . . . . . . . . . . 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 2798	. . . . . . . . . . . . . . . . . . . . . . . . 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 6880	. . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ⊢ (𝑓 = (𝑔(_𝑝‘𝐽)ℎ) → (𝑓‘0) = ((𝑔(_𝑝‘𝐽)ℎ)‘0))
58	57	eqeq1d 2765	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ (𝑓 = (𝑔(_𝑝‘𝐽)ℎ) → ((𝑓‘0) = 𝑥 ↔ ((𝑔(_𝑝‘𝐽)ℎ)‘0) = 𝑥))
59		fveq1 6880	. . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ⊢ (𝑓 = (𝑔(_𝑝‘𝐽)ℎ) → (𝑓‘1) = ((𝑔(_𝑝‘𝐽)ℎ)‘1))
60	59	eqeq1d 2765	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ (𝑓 = (𝑔(_𝑝‘𝐽)ℎ) → ((𝑓‘1) = 𝑦 ↔ ((𝑔(_𝑝‘𝐽)ℎ)‘1) = 𝑦))
61	58, 60	anbi12d 643	. . . . . . . . . . . . . . . . . . . . . . . . . 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 3581	. . . . . . . . . . . . . . . . . . . . . . . . 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 849	. . . . . . . . . . . . . . . . . . . . . . . 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 3172	. . . . . . . . . . . . . . . . . . . . . . 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 472	. . . . . . . . . . . . . . . . . . . . . 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 3157	. . . . . . . . . . . . . . . . . . . . 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 472	. . . . . . . . . . . . . . . . . . . 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 3167	. . . . . . . . . . . . . . . . . . 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 485	. . . . . . . . . . . . . . . . . . . 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 788	. . . . . . . . . . . . . . . . . . . . 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 18	. . . . . . . . . . . . . . . . . . . 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 3947	. . . . . . . . . . . . . . . . . . 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 534	. . . . . . . . . . . . . . . . . 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 6880	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑓 = 𝑔 → (𝑓‘0) = (𝑔‘0))
75	74	eqeq1d 2765	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑓 = 𝑔 → ((𝑓‘0) = 𝑥 ↔ (𝑔‘0) = 𝑥))
76		fveq1 6880	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑓 = 𝑔 → (𝑓‘1) = (𝑔‘1))
77	76	eqeq1d 2765	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑓 = 𝑔 → ((𝑓‘1) = 𝑤 ↔ (𝑔‘1) = 𝑤))
78	75, 77	anbi12d 643	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑓 = 𝑔 → (((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑤) ↔ ((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤)))
79	78	cbvrexvw 3244	. . . . . . . . . . . . . . . . . 18 ⊢ (∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑤) ↔ ∃𝑔 ∈ (II Cn 𝐽)((𝑔‘0) = 𝑥 ∧ (𝑔‘1) = 𝑤))
80		ssrab 4025	. . . . . . . . . . . . . . . . . 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 299	. . . . . . . . . . . . . . . . 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 35	. . . . . . . . . . . . . . . 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 3157	. . . . . . . . . . . . . . 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 520	. . . . . . . . . . . . . 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 461	. . . . . . . . . . . . 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 3180	. . . . . . . . . . . 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 3166	. . . . . . . . . . 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 16	. . . . . . . . . 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 472	. . . . . . . . 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 3157	. . . . . . . 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 738	. . . . . . . . 9 ⊢ (((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ 𝑥 ∈ ∪ 𝐽) → 𝐽 ∈ Top)
92		ssrab2 4034	. . . . . . . . 9 ⊢ {𝑦 ∈ ∪ 𝐽 ∣ ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)} ⊆ ∪ 𝐽
93	3	isclo2 23245	. . . . . . . . 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 597	. . . . . . . 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 260	. . . . . . 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 3935	. . . . . 6 ⊢ (((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ 𝑥 ∈ ∪ 𝐽) → {𝑦 ∈ ∪ 𝐽 ∣ ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)} ∈ 𝐽)
97		simpr 489	. . . . . . . 8 ⊢ (((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ 𝑥 ∈ ∪ 𝐽) → 𝑥 ∈ ∪ 𝐽)
98		iitopon 25038	. . . . . . . . . 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 23074	. . . . . . . . . 10 ⊢ (𝐽 ∈ Top ↔ 𝐽 ∈ (TopOn‘∪ 𝐽))
101	91, 100	sylib 221	. . . . . . . . 9 ⊢ (((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ 𝑥 ∈ ∪ 𝐽) → 𝐽 ∈ (TopOn‘∪ 𝐽))
102		cnconst2 23440	. . . . . . . . 9 ⊢ ((II ∈ (TopOn‘(0[,]1)) ∧ 𝐽 ∈ (TopOn‘∪ 𝐽) ∧ 𝑥 ∈ ∪ 𝐽) → ((0[,]1) × {𝑥}) ∈ (II Cn 𝐽))
103	99, 101, 97, 102	syl3anc 1398	. . . . . . . 8 ⊢ (((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ 𝑥 ∈ ∪ 𝐽) → ((0[,]1) × {𝑥}) ∈ (II Cn 𝐽))
104		0elunit 13491	. . . . . . . . 9 ⊢ 0 ∈ (0[,]1)
105		vex 3459	. . . . . . . . . 10 ⊢ 𝑥 ∈ V
106	105	fvconst2 7202	. . . . . . . . 9 ⊢ (0 ∈ (0[,]1) → (((0[,]1) × {𝑥})‘0) = 𝑥)
107	104, 106	mp1i 14	. . . . . . . 8 ⊢ (((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ 𝑥 ∈ ∪ 𝐽) → (((0[,]1) × {𝑥})‘0) = 𝑥)
108		1elunit 13492	. . . . . . . . 9 ⊢ 1 ∈ (0[,]1)
109	105	fvconst2 7202	. . . . . . . . 9 ⊢ (1 ∈ (0[,]1) → (((0[,]1) × {𝑥})‘1) = 𝑥)
110	108, 109	mp1i 14	. . . . . . . 8 ⊢ (((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ 𝑥 ∈ ∪ 𝐽) → (((0[,]1) × {𝑥})‘1) = 𝑥)
111		eqeq2 2775	. . . . . . . . . 10 ⊢ (𝑦 = 𝑥 → ((𝑓‘1) = 𝑦 ↔ (𝑓‘1) = 𝑥))
112	111	anbi2d 641	. . . . . . . . 9 ⊢ (𝑦 = 𝑥 → (((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦) ↔ ((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑥)))
113		fveq1 6880	. . . . . . . . . . 11 ⊢ (𝑓 = ((0[,]1) × {𝑥}) → (𝑓‘0) = (((0[,]1) × {𝑥})‘0))
114	113	eqeq1d 2765	. . . . . . . . . 10 ⊢ (𝑓 = ((0[,]1) × {𝑥}) → ((𝑓‘0) = 𝑥 ↔ (((0[,]1) × {𝑥})‘0) = 𝑥))
115		fveq1 6880	. . . . . . . . . . 11 ⊢ (𝑓 = ((0[,]1) × {𝑥}) → (𝑓‘1) = (((0[,]1) × {𝑥})‘1))
116	115	eqeq1d 2765	. . . . . . . . . 10 ⊢ (𝑓 = ((0[,]1) × {𝑥}) → ((𝑓‘1) = 𝑥 ↔ (((0[,]1) × {𝑥})‘1) = 𝑥))
117	114, 116	anbi12d 643	. . . . . . . . 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 3594	. . . . . . . 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 1401	. . . . . . 7 ⊢ (((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ 𝑥 ∈ ∪ 𝐽) → ∃𝑦 ∈ ∪ 𝐽∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦))
120		rabn0 4346	. . . . . . 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 237	. . . . . 6 ⊢ (((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ 𝑥 ∈ ∪ 𝐽) → {𝑦 ∈ ∪ 𝐽 ∣ ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)} ≠ ∅)
122		inss2 4190	. . . . . . 7 ⊢ (𝐽 ∩ (Clsd‘𝐽)) ⊆ (Clsd‘𝐽)
123	122, 95	sselid 3935	. . . . . 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 23572	. . . . 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 2769	. . . 4 ⊢ (((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ 𝑥 ∈ ∪ 𝐽) → ∪ 𝐽 = {𝑦 ∈ ∪ 𝐽 ∣ ∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)})
126		rabid2 3449	. . . 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 221	. . 3 ⊢ (((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) ∧ 𝑥 ∈ ∪ 𝐽) → ∀𝑦 ∈ ∪ 𝐽∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦))
128	127	ralrimiva 3157	. 2 ⊢ ((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) → ∀𝑥 ∈ ∪ 𝐽∀𝑦 ∈ ∪ 𝐽∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦))
129	3	ispconn 35715	. 2 ⊢ (𝐽 ∈ PConn ↔ (𝐽 ∈ Top ∧ ∀𝑥 ∈ ∪ 𝐽∀𝑦 ∈ ∪ 𝐽∃𝑓 ∈ (II Cn 𝐽)((𝑓‘0) = 𝑥 ∧ (𝑓‘1) = 𝑦)))
130	2, 128, 129	sylanbrc 594	1 ⊢ ((𝐽 ∈ Conn ∧ 𝐽 ∈ 𝑛-Locally PConn) → 𝐽 ∈ PConn)

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 209 ∧ wa 400 ∧ w3a 1103 = wceq 1570 ∈ wcel 2143 ≠ wne 2958 ∀wral 3079 ∃wrex 3089 {crab 3416 ∩ cin 3904 ⊆ wss 3905 ∅c0 4286 𝒫 cpw 4562 {csn 4589 ∪ cuni 4872 × cxp 5659 ‘cfv 6536 (class class class)co 7410 0cc0 11095 1c1 11096 [,]cicc 13370 ↾_t crest 17468 Topctop 23050 TopOnctopon 23067 Clsdccld 23173 Cn ccn 23381 Conncconn 23568 𝑛-Locally cnlly 23622 IIcii 25034 *_𝑝cpco 25159 PConncpconn 35711

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 5238 ax-sep 5257 ax-nul 5269 ax-pow 5336 ax-pr 5404 ax-un 7732 ax-cnex 11151 ax-resscn 11152 ax-1cn 11153 ax-icn 11154 ax-addcl 11155 ax-addrcl 11156 ax-mulcl 11157 ax-mulrcl 11158 ax-mulcom 11159 ax-addass 11160 ax-mulass 11161 ax-distr 11162 ax-i2m1 11163 ax-1ne0 11164 ax-1rid 11165 ax-rnegex 11166 ax-rrecex 11167 ax-cnre 11168 ax-pre-lttri 11169 ax-pre-lttrn 11170 ax-pre-ltadd 11171 ax-pre-mulgt0 11172 ax-pre-sup 11173

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-nel 3065 df-ral 3080 df-rex 3090 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3457 df-sbc 3745 df-csb 3854 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-pss 3925 df-nul 4287 df-if 4488 df-pw 4564 df-sn 4590 df-pr 4592 df-tp 4594 df-op 4596 df-uni 4873 df-int 4913 df-iun 4958 df-iin 4959 df-br 5110 df-opab 5174 df-mpt 5193 df-tr 5219 df-id 5556 df-eprel 5561 df-po 5569 df-so 5570 df-fr 5614 df-se 5615 df-we 5616 df-xp 5667 df-rel 5668 df-cnv 5669 df-co 5670 df-dm 5671 df-rn 5672 df-res 5673 df-ima 5674 df-pred 6302 df-ord 6363 df-on 6364 df-lim 6365 df-suc 6366 df-iota 6492 df-fun 6538 df-fn 6539 df-f 6540 df-f1 6541 df-fo 6542 df-f1o 6543 df-fv 6544 df-isom 6545 df-riota 7367 df-ov 7413 df-oprab 7414 df-mpo 7415 df-of 7674 df-om 7859 df-1st 7982 df-2nd 7983 df-supp 8153 df-frecs 8274 df-wrecs 8305 df-recs 8354 df-rdg 8393 df-1o 8449 df-2o 8450 df-er 8690 df-map 8822 df-ixp 8892 df-en 8940 df-dom 8941 df-sdom 8942 df-fin 8943 df-fsupp 9318 df-fi 9367 df-sup 9398 df-inf 9399 df-oi 9468 df-card 9921 df-pnf 11240 df-mnf 11241 df-xr 11242 df-ltxr 11243 df-le 11244 df-sub 11438 df-neg 11439 df-div 11867 df-nn 12229 df-2 12298 df-3 12299 df-4 12300 df-5 12301 df-6 12302 df-7 12303 df-8 12304 df-9 12305 df-n0 12500 df-z 12587 df-dec 12707 df-uz 12858 df-q 12968 df-rp 13012 df-xneg 13132 df-xadd 13133 df-xmul 13134 df-ioo 13371 df-icc 13374 df-fz 13531 df-fzo 13679 df-seq 14034 df-exp 14094 df-hash 14363 df-cj 15146 df-re 15147 df-im 15148 df-sqrt 15282 df-abs 15283 df-struct 17202 df-sets 17219 df-slot 17237 df-ndx 17249 df-base 17265 df-ress 17286 df-plusg 17318 df-mulr 17319 df-starv 17320 df-sca 17321 df-vsca 17322 df-ip 17323 df-tset 17324 df-ple 17325 df-ds 17327 df-unif 17328 df-hom 17329 df-cco 17330 df-rest 17470 df-topn 17471 df-0g 17489 df-gsum 17490 df-topgen 17491 df-pt 17492 df-prds 17495 df-xrs 17551 df-qtop 17556 df-imas 17557 df-xps 17559 df-mre 17633 df-mrc 17634 df-acs 17636 df-mgm 18693 df-sgrp 18772 df-mnd 18788 df-submnd 18837 df-mulg 19129 df-cntz 19382 df-cmn 19847 df-psmet 21514 df-xmet 21515 df-met 21516 df-bl 21517 df-mopn 21518 df-cnfld 21523 df-top 23051 df-topon 23068 df-topsp 23090 df-bases 23103 df-cld 23176 df-nei 23255 df-cn 23384 df-cnp 23385 df-conn 23569 df-nlly 23624 df-tx 23719 df-hmeo 23912 df-xms 24477 df-ms 24478 df-tms 24479 df-ii 25036 df-pco 25164 df-pconn 35713

This theorem is referenced by: (None)

W3C validator