Theorem hauspwpwf1 24306

Description: Lemma for hauspwpwdom 24307. Points in the closure of a set in a Hausdorff space are characterized by the open neighborhoods they extend into the generating set. (Contributed by Mario Carneiro, 28-Jul-2015.)

Hypotheses

Ref	Expression
hauspwpwf1.x	⊢ 𝑋 = ∪ 𝐽
hauspwpwf1.f	⊢ 𝐹 = (𝑥 ∈ ((cls‘𝐽)‘𝐴) ↦ {𝑎 ∣ ∃𝑗 ∈ 𝐽 (𝑥 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴))})

Assertion

Ref	Expression
hauspwpwf1	⊢ ((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) → 𝐹:((cls‘𝐽)‘𝐴)–1-1→𝒫 𝒫 𝐴)

Distinct variable groups:   𝑗,𝑎,𝑥,𝐴   𝐽,𝑎,𝑗,𝑥   𝑗,𝑋,𝑥

Allowed substitution hints:   𝐹(𝑥, 𝑗, 𝑎)   𝑋(𝑎)

Proof of Theorem hauspwpwf1

Dummy variables 𝑘 𝑙 𝑦 𝑧 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		inss2 4183	. . . . . . . . . 10 ⊢ (𝑗 ∩ 𝐴) ⊆ 𝐴
2		vex 3455	. . . . . . . . . . . 12 ⊢ 𝑗 ∈ V
3	2	inex1 5277	. . . . . . . . . . 11 ⊢ (𝑗 ∩ 𝐴) ∈ V
4	3	elpw 4561	. . . . . . . . . 10 ⊢ ((𝑗 ∩ 𝐴) ∈ 𝒫 𝐴 ↔ (𝑗 ∩ 𝐴) ⊆ 𝐴)
5	1, 4	mpbir 234	. . . . . . . . 9 ⊢ (𝑗 ∩ 𝐴) ∈ 𝒫 𝐴
6		eleq1 2849	. . . . . . . . 9 ⊢ (𝑎 = (𝑗 ∩ 𝐴) → (𝑎 ∈ 𝒫 𝐴 ↔ (𝑗 ∩ 𝐴) ∈ 𝒫 𝐴))
7	5, 6	mpbiri 261	. . . . . . . 8 ⊢ (𝑎 = (𝑗 ∩ 𝐴) → 𝑎 ∈ 𝒫 𝐴)
8	7	adantl 487	. . . . . . 7 ⊢ ((𝑥 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴)) → 𝑎 ∈ 𝒫 𝐴)
9	8	rexlimivw 3160	. . . . . 6 ⊢ (∃𝑗 ∈ 𝐽 (𝑥 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴)) → 𝑎 ∈ 𝒫 𝐴)
10	9	abssi 4016	. . . . 5 ⊢ {𝑎 ∣ ∃𝑗 ∈ 𝐽 (𝑥 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴))} ⊆ 𝒫 𝐴
11		haustop 23649	. . . . . . . . 9 ⊢ (𝐽 ∈ Haus → 𝐽 ∈ Top)
12		hauspwpwf1.x	. . . . . . . . . 10 ⊢ 𝑋 = ∪ 𝐽
13	12	topopn 23224	. . . . . . . . 9 ⊢ (𝐽 ∈ Top → 𝑋 ∈ 𝐽)
14	11, 13	syl 18	. . . . . . . 8 ⊢ (𝐽 ∈ Haus → 𝑋 ∈ 𝐽)
15		ssexg 5281	. . . . . . . 8 ⊢ ((𝐴 ⊆ 𝑋 ∧ 𝑋 ∈ 𝐽) → 𝐴 ∈ V)
16	14, 15	sylan2 605	. . . . . . 7 ⊢ ((𝐴 ⊆ 𝑋 ∧ 𝐽 ∈ Haus) → 𝐴 ∈ V)
17	16	ancoms 464	. . . . . 6 ⊢ ((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) → 𝐴 ∈ V)
18		pwexg 5340	. . . . . 6 ⊢ (𝐴 ∈ V → 𝒫 𝐴 ∈ V)
19		elpw2g 5295	. . . . . 6 ⊢ (𝒫 𝐴 ∈ V → ({𝑎 ∣ ∃𝑗 ∈ 𝐽 (𝑥 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴))} ∈ 𝒫 𝒫 𝐴 ↔ {𝑎 ∣ ∃𝑗 ∈ 𝐽 (𝑥 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴))} ⊆ 𝒫 𝐴))
20	17, 18, 19	3syl 19	. . . . 5 ⊢ ((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) → ({𝑎 ∣ ∃𝑗 ∈ 𝐽 (𝑥 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴))} ∈ 𝒫 𝒫 𝐴 ↔ {𝑎 ∣ ∃𝑗 ∈ 𝐽 (𝑥 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴))} ⊆ 𝒫 𝐴))
21	10, 20	mpbiri 261	. . . 4 ⊢ ((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) → {𝑎 ∣ ∃𝑗 ∈ 𝐽 (𝑥 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴))} ∈ 𝒫 𝒫 𝐴)
22	21	a1d 26	. . 3 ⊢ ((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) → (𝑥 ∈ ((cls‘𝐽)‘𝐴) → {𝑎 ∣ ∃𝑗 ∈ 𝐽 (𝑥 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴))} ∈ 𝒫 𝒫 𝐴))
23		simplll 787	. . . . . . . . 9 ⊢ ((((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) ∧ 𝑥 ≠ 𝑦) → 𝐽 ∈ Haus)
24	12	clsss3 23377	. . . . . . . . . . . 12 ⊢ ((𝐽 ∈ Top ∧ 𝐴 ⊆ 𝑋) → ((cls‘𝐽)‘𝐴) ⊆ 𝑋)
25	11, 24	sylan 592	. . . . . . . . . . 11 ⊢ ((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) → ((cls‘𝐽)‘𝐴) ⊆ 𝑋)
26	25	ad2antrr 739	. . . . . . . . . 10 ⊢ ((((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) ∧ 𝑥 ≠ 𝑦) → ((cls‘𝐽)‘𝐴) ⊆ 𝑋)
27		simplrl 789	. . . . . . . . . 10 ⊢ ((((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) ∧ 𝑥 ≠ 𝑦) → 𝑥 ∈ ((cls‘𝐽)‘𝐴))
28	26, 27	sseldd 3932	. . . . . . . . 9 ⊢ ((((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) ∧ 𝑥 ≠ 𝑦) → 𝑥 ∈ 𝑋)
29		simplrr 790	. . . . . . . . . 10 ⊢ ((((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) ∧ 𝑥 ≠ 𝑦) → 𝑦 ∈ ((cls‘𝐽)‘𝐴))
30	26, 29	sseldd 3932	. . . . . . . . 9 ⊢ ((((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) ∧ 𝑥 ≠ 𝑦) → 𝑦 ∈ 𝑋)
31		simpr 490	. . . . . . . . 9 ⊢ ((((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) ∧ 𝑥 ≠ 𝑦) → 𝑥 ≠ 𝑦)
32	12	hausnei 23646	. . . . . . . . 9 ⊢ ((𝐽 ∈ Haus ∧ (𝑥 ∈ 𝑋 ∧ 𝑦 ∈ 𝑋 ∧ 𝑥 ≠ 𝑦)) → ∃𝑘 ∈ 𝐽 ∃𝑙 ∈ 𝐽 (𝑥 ∈ 𝑘 ∧ 𝑦 ∈ 𝑙 ∧ (𝑘 ∩ 𝑙) = ∅))
33	23, 28, 30, 31, 32	syl13anc 1399	. . . . . . . 8 ⊢ ((((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) ∧ 𝑥 ≠ 𝑦) → ∃𝑘 ∈ 𝐽 ∃𝑙 ∈ 𝐽 (𝑥 ∈ 𝑘 ∧ 𝑦 ∈ 𝑙 ∧ (𝑘 ∩ 𝑙) = ∅))
34		simprll 791	. . . . . . . . . . . . 13 ⊢ (((((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) ∧ 𝑥 ≠ 𝑦) ∧ ((𝑘 ∈ 𝐽 ∧ 𝑙 ∈ 𝐽) ∧ (𝑥 ∈ 𝑘 ∧ 𝑦 ∈ 𝑙 ∧ (𝑘 ∩ 𝑙) = ∅))) → 𝑘 ∈ 𝐽)
35		simprr1 1240	. . . . . . . . . . . . 13 ⊢ (((((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) ∧ 𝑥 ≠ 𝑦) ∧ ((𝑘 ∈ 𝐽 ∧ 𝑙 ∈ 𝐽) ∧ (𝑥 ∈ 𝑘 ∧ 𝑦 ∈ 𝑙 ∧ (𝑘 ∩ 𝑙) = ∅))) → 𝑥 ∈ 𝑘)
36		eqidd 2762	. . . . . . . . . . . . 13 ⊢ (((((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) ∧ 𝑥 ≠ 𝑦) ∧ ((𝑘 ∈ 𝐽 ∧ 𝑙 ∈ 𝐽) ∧ (𝑥 ∈ 𝑘 ∧ 𝑦 ∈ 𝑙 ∧ (𝑘 ∩ 𝑙) = ∅))) → (𝑘 ∩ 𝐴) = (𝑘 ∩ 𝐴))
37		elequ2 2160	. . . . . . . . . . . . . . 15 ⊢ (𝑗 = 𝑘 → (𝑥 ∈ 𝑗 ↔ 𝑥 ∈ 𝑘))
38		ineq1 4159	. . . . . . . . . . . . . . . 16 ⊢ (𝑗 = 𝑘 → (𝑗 ∩ 𝐴) = (𝑘 ∩ 𝐴))
39	38	eqeq2d 2772	. . . . . . . . . . . . . . 15 ⊢ (𝑗 = 𝑘 → ((𝑘 ∩ 𝐴) = (𝑗 ∩ 𝐴) ↔ (𝑘 ∩ 𝐴) = (𝑘 ∩ 𝐴)))
40	37, 39	anbi12d 644	. . . . . . . . . . . . . 14 ⊢ (𝑗 = 𝑘 → ((𝑥 ∈ 𝑗 ∧ (𝑘 ∩ 𝐴) = (𝑗 ∩ 𝐴)) ↔ (𝑥 ∈ 𝑘 ∧ (𝑘 ∩ 𝐴) = (𝑘 ∩ 𝐴))))
41	40	rspcev 3577	. . . . . . . . . . . . 13 ⊢ ((𝑘 ∈ 𝐽 ∧ (𝑥 ∈ 𝑘 ∧ (𝑘 ∩ 𝐴) = (𝑘 ∩ 𝐴))) → ∃𝑗 ∈ 𝐽 (𝑥 ∈ 𝑗 ∧ (𝑘 ∩ 𝐴) = (𝑗 ∩ 𝐴)))
42	34, 35, 36, 41	syl12anc 850	. . . . . . . . . . . 12 ⊢ (((((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) ∧ 𝑥 ≠ 𝑦) ∧ ((𝑘 ∈ 𝐽 ∧ 𝑙 ∈ 𝐽) ∧ (𝑥 ∈ 𝑘 ∧ 𝑦 ∈ 𝑙 ∧ (𝑘 ∩ 𝑙) = ∅))) → ∃𝑗 ∈ 𝐽 (𝑥 ∈ 𝑗 ∧ (𝑘 ∩ 𝐴) = (𝑗 ∩ 𝐴)))
43		vex 3455	. . . . . . . . . . . . . 14 ⊢ 𝑘 ∈ V
44	43	inex1 5277	. . . . . . . . . . . . 13 ⊢ (𝑘 ∩ 𝐴) ∈ V
45		eqeq1 2765	. . . . . . . . . . . . . . 15 ⊢ (𝑎 = (𝑘 ∩ 𝐴) → (𝑎 = (𝑗 ∩ 𝐴) ↔ (𝑘 ∩ 𝐴) = (𝑗 ∩ 𝐴)))
46	45	anbi2d 642	. . . . . . . . . . . . . 14 ⊢ (𝑎 = (𝑘 ∩ 𝐴) → ((𝑥 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴)) ↔ (𝑥 ∈ 𝑗 ∧ (𝑘 ∩ 𝐴) = (𝑗 ∩ 𝐴))))
47	46	rexbidv 3187	. . . . . . . . . . . . 13 ⊢ (𝑎 = (𝑘 ∩ 𝐴) → (∃𝑗 ∈ 𝐽 (𝑥 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴)) ↔ ∃𝑗 ∈ 𝐽 (𝑥 ∈ 𝑗 ∧ (𝑘 ∩ 𝐴) = (𝑗 ∩ 𝐴))))
48	44, 47	elab 3633	. . . . . . . . . . . 12 ⊢ ((𝑘 ∩ 𝐴) ∈ {𝑎 ∣ ∃𝑗 ∈ 𝐽 (𝑥 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴))} ↔ ∃𝑗 ∈ 𝐽 (𝑥 ∈ 𝑗 ∧ (𝑘 ∩ 𝐴) = (𝑗 ∩ 𝐴)))
49	42, 48	sylibr 237	. . . . . . . . . . 11 ⊢ (((((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) ∧ 𝑥 ≠ 𝑦) ∧ ((𝑘 ∈ 𝐽 ∧ 𝑙 ∈ 𝐽) ∧ (𝑥 ∈ 𝑘 ∧ 𝑦 ∈ 𝑙 ∧ (𝑘 ∩ 𝑙) = ∅))) → (𝑘 ∩ 𝐴) ∈ {𝑎 ∣ ∃𝑗 ∈ 𝐽 (𝑥 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴))})
50	11	ad2antrr 739	. . . . . . . . . . . . . . . . . . 19 ⊢ (((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) → 𝐽 ∈ Top)
51	50	ad3antrrr 743	. . . . . . . . . . . . . . . . . 18 ⊢ ((((((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) ∧ 𝑥 ≠ 𝑦) ∧ ((𝑘 ∈ 𝐽 ∧ 𝑙 ∈ 𝐽) ∧ (𝑥 ∈ 𝑘 ∧ 𝑦 ∈ 𝑙 ∧ (𝑘 ∩ 𝑙) = ∅))) ∧ (𝑗 ∈ 𝐽 ∧ 𝑦 ∈ 𝑗)) → 𝐽 ∈ Top)
52		simplr 781	. . . . . . . . . . . . . . . . . . 19 ⊢ (((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) → 𝐴 ⊆ 𝑋)
53	52	ad3antrrr 743	. . . . . . . . . . . . . . . . . 18 ⊢ ((((((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) ∧ 𝑥 ≠ 𝑦) ∧ ((𝑘 ∈ 𝐽 ∧ 𝑙 ∈ 𝐽) ∧ (𝑥 ∈ 𝑘 ∧ 𝑦 ∈ 𝑙 ∧ (𝑘 ∩ 𝑙) = ∅))) ∧ (𝑗 ∈ 𝐽 ∧ 𝑦 ∈ 𝑗)) → 𝐴 ⊆ 𝑋)
54		simprr 785	. . . . . . . . . . . . . . . . . . 19 ⊢ (((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) → 𝑦 ∈ ((cls‘𝐽)‘𝐴))
55	54	ad3antrrr 743	. . . . . . . . . . . . . . . . . 18 ⊢ ((((((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) ∧ 𝑥 ≠ 𝑦) ∧ ((𝑘 ∈ 𝐽 ∧ 𝑙 ∈ 𝐽) ∧ (𝑥 ∈ 𝑘 ∧ 𝑦 ∈ 𝑙 ∧ (𝑘 ∩ 𝑙) = ∅))) ∧ (𝑗 ∈ 𝐽 ∧ 𝑦 ∈ 𝑗)) → 𝑦 ∈ ((cls‘𝐽)‘𝐴))
56		simplr 781	. . . . . . . . . . . . . . . . . . . 20 ⊢ (((𝑘 ∈ 𝐽 ∧ 𝑙 ∈ 𝐽) ∧ (𝑥 ∈ 𝑘 ∧ 𝑦 ∈ 𝑙 ∧ (𝑘 ∩ 𝑙) = ∅)) → 𝑙 ∈ 𝐽)
57	56	ad2antlr 740	. . . . . . . . . . . . . . . . . . 19 ⊢ ((((((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) ∧ 𝑥 ≠ 𝑦) ∧ ((𝑘 ∈ 𝐽 ∧ 𝑙 ∈ 𝐽) ∧ (𝑥 ∈ 𝑘 ∧ 𝑦 ∈ 𝑙 ∧ (𝑘 ∩ 𝑙) = ∅))) ∧ (𝑗 ∈ 𝐽 ∧ 𝑦 ∈ 𝑗)) → 𝑙 ∈ 𝐽)
58		simprl 783	. . . . . . . . . . . . . . . . . . 19 ⊢ ((((((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) ∧ 𝑥 ≠ 𝑦) ∧ ((𝑘 ∈ 𝐽 ∧ 𝑙 ∈ 𝐽) ∧ (𝑥 ∈ 𝑘 ∧ 𝑦 ∈ 𝑙 ∧ (𝑘 ∩ 𝑙) = ∅))) ∧ (𝑗 ∈ 𝐽 ∧ 𝑦 ∈ 𝑗)) → 𝑗 ∈ 𝐽)
59		inopn 23217	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝐽 ∈ Top ∧ 𝑙 ∈ 𝐽 ∧ 𝑗 ∈ 𝐽) → (𝑙 ∩ 𝑗) ∈ 𝐽)
60	51, 57, 58, 59	syl3anc 1398	. . . . . . . . . . . . . . . . . 18 ⊢ ((((((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) ∧ 𝑥 ≠ 𝑦) ∧ ((𝑘 ∈ 𝐽 ∧ 𝑙 ∈ 𝐽) ∧ (𝑥 ∈ 𝑘 ∧ 𝑦 ∈ 𝑙 ∧ (𝑘 ∩ 𝑙) = ∅))) ∧ (𝑗 ∈ 𝐽 ∧ 𝑦 ∈ 𝑗)) → (𝑙 ∩ 𝑗) ∈ 𝐽)
61		simpr2 1214	. . . . . . . . . . . . . . . . . . . 20 ⊢ (((𝑘 ∈ 𝐽 ∧ 𝑙 ∈ 𝐽) ∧ (𝑥 ∈ 𝑘 ∧ 𝑦 ∈ 𝑙 ∧ (𝑘 ∩ 𝑙) = ∅)) → 𝑦 ∈ 𝑙)
62	61	ad2antlr 740	. . . . . . . . . . . . . . . . . . 19 ⊢ ((((((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) ∧ 𝑥 ≠ 𝑦) ∧ ((𝑘 ∈ 𝐽 ∧ 𝑙 ∈ 𝐽) ∧ (𝑥 ∈ 𝑘 ∧ 𝑦 ∈ 𝑙 ∧ (𝑘 ∩ 𝑙) = ∅))) ∧ (𝑗 ∈ 𝐽 ∧ 𝑦 ∈ 𝑗)) → 𝑦 ∈ 𝑙)
63		simprr 785	. . . . . . . . . . . . . . . . . . 19 ⊢ ((((((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) ∧ 𝑥 ≠ 𝑦) ∧ ((𝑘 ∈ 𝐽 ∧ 𝑙 ∈ 𝐽) ∧ (𝑥 ∈ 𝑘 ∧ 𝑦 ∈ 𝑙 ∧ (𝑘 ∩ 𝑙) = ∅))) ∧ (𝑗 ∈ 𝐽 ∧ 𝑦 ∈ 𝑗)) → 𝑦 ∈ 𝑗)
64	62, 63	elind 4146	. . . . . . . . . . . . . . . . . 18 ⊢ ((((((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) ∧ 𝑥 ≠ 𝑦) ∧ ((𝑘 ∈ 𝐽 ∧ 𝑙 ∈ 𝐽) ∧ (𝑥 ∈ 𝑘 ∧ 𝑦 ∈ 𝑙 ∧ (𝑘 ∩ 𝑙) = ∅))) ∧ (𝑗 ∈ 𝐽 ∧ 𝑦 ∈ 𝑗)) → 𝑦 ∈ (𝑙 ∩ 𝑗))
65	12	clsndisj 23393	. . . . . . . . . . . . . . . . . 18 ⊢ (((𝐽 ∈ Top ∧ 𝐴 ⊆ 𝑋 ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴)) ∧ ((𝑙 ∩ 𝑗) ∈ 𝐽 ∧ 𝑦 ∈ (𝑙 ∩ 𝑗))) → ((𝑙 ∩ 𝑗) ∩ 𝐴) ≠ ∅)
66	51, 53, 55, 60, 64, 65	syl32anc 1405	. . . . . . . . . . . . . . . . 17 ⊢ ((((((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) ∧ 𝑥 ≠ 𝑦) ∧ ((𝑘 ∈ 𝐽 ∧ 𝑙 ∈ 𝐽) ∧ (𝑥 ∈ 𝑘 ∧ 𝑦 ∈ 𝑙 ∧ (𝑘 ∩ 𝑙) = ∅))) ∧ (𝑗 ∈ 𝐽 ∧ 𝑦 ∈ 𝑗)) → ((𝑙 ∩ 𝑗) ∩ 𝐴) ≠ ∅)
67		n0 4300	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑙 ∩ 𝑗) ∩ 𝐴) ≠ ∅ ↔ ∃𝑧 𝑧 ∈ ((𝑙 ∩ 𝑗) ∩ 𝐴))
68	66, 67	sylib 221	. . . . . . . . . . . . . . . 16 ⊢ ((((((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) ∧ 𝑥 ≠ 𝑦) ∧ ((𝑘 ∈ 𝐽 ∧ 𝑙 ∈ 𝐽) ∧ (𝑥 ∈ 𝑘 ∧ 𝑦 ∈ 𝑙 ∧ (𝑘 ∩ 𝑙) = ∅))) ∧ (𝑗 ∈ 𝐽 ∧ 𝑦 ∈ 𝑗)) → ∃𝑧 𝑧 ∈ ((𝑙 ∩ 𝑗) ∩ 𝐴))
69		elin 3915	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑧 ∈ ((𝑙 ∩ 𝑗) ∩ 𝐴) ↔ (𝑧 ∈ (𝑙 ∩ 𝑗) ∧ 𝑧 ∈ 𝐴))
70		elin 3915	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑧 ∈ (𝑙 ∩ 𝑗) ↔ (𝑧 ∈ 𝑙 ∧ 𝑧 ∈ 𝑗))
71	70	anbi1i 636	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝑧 ∈ (𝑙 ∩ 𝑗) ∧ 𝑧 ∈ 𝐴) ↔ ((𝑧 ∈ 𝑙 ∧ 𝑧 ∈ 𝑗) ∧ 𝑧 ∈ 𝐴))
72	69, 71	bitri 278	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑧 ∈ ((𝑙 ∩ 𝑗) ∩ 𝐴) ↔ ((𝑧 ∈ 𝑙 ∧ 𝑧 ∈ 𝑗) ∧ 𝑧 ∈ 𝐴))
73		elin 3915	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ (𝑧 ∈ (𝑗 ∩ 𝐴) ↔ (𝑧 ∈ 𝑗 ∧ 𝑧 ∈ 𝐴))
74	73	biimpri 231	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ ((𝑧 ∈ 𝑗 ∧ 𝑧 ∈ 𝐴) → 𝑧 ∈ (𝑗 ∩ 𝐴))
75	74	adantll 727	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (((𝑧 ∈ 𝑙 ∧ 𝑧 ∈ 𝑗) ∧ 𝑧 ∈ 𝐴) → 𝑧 ∈ (𝑗 ∩ 𝐴))
76	75	ad2antll 742	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((((((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) ∧ 𝑥 ≠ 𝑦) ∧ ((𝑘 ∈ 𝐽 ∧ 𝑙 ∈ 𝐽) ∧ (𝑥 ∈ 𝑘 ∧ 𝑦 ∈ 𝑙 ∧ (𝑘 ∩ 𝑙) = ∅))) ∧ ((𝑗 ∈ 𝐽 ∧ 𝑦 ∈ 𝑗) ∧ ((𝑧 ∈ 𝑙 ∧ 𝑧 ∈ 𝑗) ∧ 𝑧 ∈ 𝐴))) → 𝑧 ∈ (𝑗 ∩ 𝐴))
77		simpll 779	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (((𝑧 ∈ 𝑙 ∧ 𝑧 ∈ 𝑗) ∧ 𝑧 ∈ 𝐴) → 𝑧 ∈ 𝑙)
78	77	ad2antll 742	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ ((((((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) ∧ 𝑥 ≠ 𝑦) ∧ ((𝑘 ∈ 𝐽 ∧ 𝑙 ∈ 𝐽) ∧ (𝑥 ∈ 𝑘 ∧ 𝑦 ∈ 𝑙 ∧ (𝑘 ∩ 𝑙) = ∅))) ∧ ((𝑗 ∈ 𝐽 ∧ 𝑦 ∈ 𝑗) ∧ ((𝑧 ∈ 𝑙 ∧ 𝑧 ∈ 𝑗) ∧ 𝑧 ∈ 𝐴))) → 𝑧 ∈ 𝑙)
79		simpr3 1215	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (((𝑘 ∈ 𝐽 ∧ 𝑙 ∈ 𝐽) ∧ (𝑥 ∈ 𝑘 ∧ 𝑦 ∈ 𝑙 ∧ (𝑘 ∩ 𝑙) = ∅)) → (𝑘 ∩ 𝑙) = ∅)
80	79	ad2antlr 740	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ ((((((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) ∧ 𝑥 ≠ 𝑦) ∧ ((𝑘 ∈ 𝐽 ∧ 𝑙 ∈ 𝐽) ∧ (𝑥 ∈ 𝑘 ∧ 𝑦 ∈ 𝑙 ∧ (𝑘 ∩ 𝑙) = ∅))) ∧ ((𝑗 ∈ 𝐽 ∧ 𝑦 ∈ 𝑗) ∧ ((𝑧 ∈ 𝑙 ∧ 𝑧 ∈ 𝑗) ∧ 𝑧 ∈ 𝐴))) → (𝑘 ∩ 𝑙) = ∅)
81		minel 4419	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ ((𝑧 ∈ 𝑙 ∧ (𝑘 ∩ 𝑙) = ∅) → ¬ 𝑧 ∈ 𝑘)
82		elinel1 4147	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (𝑧 ∈ (𝑘 ∩ 𝐴) → 𝑧 ∈ 𝑘)
83	81, 82	nsyl 141	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ ((𝑧 ∈ 𝑙 ∧ (𝑘 ∩ 𝑙) = ∅) → ¬ 𝑧 ∈ (𝑘 ∩ 𝐴))
84	78, 80, 83	syl2anc 596	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((((((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) ∧ 𝑥 ≠ 𝑦) ∧ ((𝑘 ∈ 𝐽 ∧ 𝑙 ∈ 𝐽) ∧ (𝑥 ∈ 𝑘 ∧ 𝑦 ∈ 𝑙 ∧ (𝑘 ∩ 𝑙) = ∅))) ∧ ((𝑗 ∈ 𝐽 ∧ 𝑦 ∈ 𝑗) ∧ ((𝑧 ∈ 𝑙 ∧ 𝑧 ∈ 𝑗) ∧ 𝑧 ∈ 𝐴))) → ¬ 𝑧 ∈ (𝑘 ∩ 𝐴))
85		nelneq2 2886	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((𝑧 ∈ (𝑗 ∩ 𝐴) ∧ ¬ 𝑧 ∈ (𝑘 ∩ 𝐴)) → ¬ (𝑗 ∩ 𝐴) = (𝑘 ∩ 𝐴))
86	76, 84, 85	syl2anc 596	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((((((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) ∧ 𝑥 ≠ 𝑦) ∧ ((𝑘 ∈ 𝐽 ∧ 𝑙 ∈ 𝐽) ∧ (𝑥 ∈ 𝑘 ∧ 𝑦 ∈ 𝑙 ∧ (𝑘 ∩ 𝑙) = ∅))) ∧ ((𝑗 ∈ 𝐽 ∧ 𝑦 ∈ 𝑗) ∧ ((𝑧 ∈ 𝑙 ∧ 𝑧 ∈ 𝑗) ∧ 𝑧 ∈ 𝐴))) → ¬ (𝑗 ∩ 𝐴) = (𝑘 ∩ 𝐴))
87		eqcom 2768	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((𝑗 ∩ 𝐴) = (𝑘 ∩ 𝐴) ↔ (𝑘 ∩ 𝐴) = (𝑗 ∩ 𝐴))
88	86, 87	sylnib 331	. . . . . . . . . . . . . . . . . . 19 ⊢ ((((((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) ∧ 𝑥 ≠ 𝑦) ∧ ((𝑘 ∈ 𝐽 ∧ 𝑙 ∈ 𝐽) ∧ (𝑥 ∈ 𝑘 ∧ 𝑦 ∈ 𝑙 ∧ (𝑘 ∩ 𝑙) = ∅))) ∧ ((𝑗 ∈ 𝐽 ∧ 𝑦 ∈ 𝑗) ∧ ((𝑧 ∈ 𝑙 ∧ 𝑧 ∈ 𝑗) ∧ 𝑧 ∈ 𝐴))) → ¬ (𝑘 ∩ 𝐴) = (𝑗 ∩ 𝐴))
89	88	expr 462	. . . . . . . . . . . . . . . . . 18 ⊢ ((((((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) ∧ 𝑥 ≠ 𝑦) ∧ ((𝑘 ∈ 𝐽 ∧ 𝑙 ∈ 𝐽) ∧ (𝑥 ∈ 𝑘 ∧ 𝑦 ∈ 𝑙 ∧ (𝑘 ∩ 𝑙) = ∅))) ∧ (𝑗 ∈ 𝐽 ∧ 𝑦 ∈ 𝑗)) → (((𝑧 ∈ 𝑙 ∧ 𝑧 ∈ 𝑗) ∧ 𝑧 ∈ 𝐴) → ¬ (𝑘 ∩ 𝐴) = (𝑗 ∩ 𝐴)))
90	72, 89	biimtrid 245	. . . . . . . . . . . . . . . . 17 ⊢ ((((((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) ∧ 𝑥 ≠ 𝑦) ∧ ((𝑘 ∈ 𝐽 ∧ 𝑙 ∈ 𝐽) ∧ (𝑥 ∈ 𝑘 ∧ 𝑦 ∈ 𝑙 ∧ (𝑘 ∩ 𝑙) = ∅))) ∧ (𝑗 ∈ 𝐽 ∧ 𝑦 ∈ 𝑗)) → (𝑧 ∈ ((𝑙 ∩ 𝑗) ∩ 𝐴) → ¬ (𝑘 ∩ 𝐴) = (𝑗 ∩ 𝐴)))
91	90	exlimdv 1966	. . . . . . . . . . . . . . . 16 ⊢ ((((((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) ∧ 𝑥 ≠ 𝑦) ∧ ((𝑘 ∈ 𝐽 ∧ 𝑙 ∈ 𝐽) ∧ (𝑥 ∈ 𝑘 ∧ 𝑦 ∈ 𝑙 ∧ (𝑘 ∩ 𝑙) = ∅))) ∧ (𝑗 ∈ 𝐽 ∧ 𝑦 ∈ 𝑗)) → (∃𝑧 𝑧 ∈ ((𝑙 ∩ 𝑗) ∩ 𝐴) → ¬ (𝑘 ∩ 𝐴) = (𝑗 ∩ 𝐴)))
92	68, 91	mpd 16	. . . . . . . . . . . . . . 15 ⊢ ((((((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) ∧ 𝑥 ≠ 𝑦) ∧ ((𝑘 ∈ 𝐽 ∧ 𝑙 ∈ 𝐽) ∧ (𝑥 ∈ 𝑘 ∧ 𝑦 ∈ 𝑙 ∧ (𝑘 ∩ 𝑙) = ∅))) ∧ (𝑗 ∈ 𝐽 ∧ 𝑦 ∈ 𝑗)) → ¬ (𝑘 ∩ 𝐴) = (𝑗 ∩ 𝐴))
93	92	anassrs 473	. . . . . . . . . . . . . 14 ⊢ (((((((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) ∧ 𝑥 ≠ 𝑦) ∧ ((𝑘 ∈ 𝐽 ∧ 𝑙 ∈ 𝐽) ∧ (𝑥 ∈ 𝑘 ∧ 𝑦 ∈ 𝑙 ∧ (𝑘 ∩ 𝑙) = ∅))) ∧ 𝑗 ∈ 𝐽) ∧ 𝑦 ∈ 𝑗) → ¬ (𝑘 ∩ 𝐴) = (𝑗 ∩ 𝐴))
94		nan 843	. . . . . . . . . . . . . 14 ⊢ (((((((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) ∧ 𝑥 ≠ 𝑦) ∧ ((𝑘 ∈ 𝐽 ∧ 𝑙 ∈ 𝐽) ∧ (𝑥 ∈ 𝑘 ∧ 𝑦 ∈ 𝑙 ∧ (𝑘 ∩ 𝑙) = ∅))) ∧ 𝑗 ∈ 𝐽) → ¬ (𝑦 ∈ 𝑗 ∧ (𝑘 ∩ 𝐴) = (𝑗 ∩ 𝐴))) ↔ (((((((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) ∧ 𝑥 ≠ 𝑦) ∧ ((𝑘 ∈ 𝐽 ∧ 𝑙 ∈ 𝐽) ∧ (𝑥 ∈ 𝑘 ∧ 𝑦 ∈ 𝑙 ∧ (𝑘 ∩ 𝑙) = ∅))) ∧ 𝑗 ∈ 𝐽) ∧ 𝑦 ∈ 𝑗) → ¬ (𝑘 ∩ 𝐴) = (𝑗 ∩ 𝐴)))
95	93, 94	mpbir 234	. . . . . . . . . . . . 13 ⊢ ((((((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) ∧ 𝑥 ≠ 𝑦) ∧ ((𝑘 ∈ 𝐽 ∧ 𝑙 ∈ 𝐽) ∧ (𝑥 ∈ 𝑘 ∧ 𝑦 ∈ 𝑙 ∧ (𝑘 ∩ 𝑙) = ∅))) ∧ 𝑗 ∈ 𝐽) → ¬ (𝑦 ∈ 𝑗 ∧ (𝑘 ∩ 𝐴) = (𝑗 ∩ 𝐴)))
96	95	nrexdv 3158	. . . . . . . . . . . 12 ⊢ (((((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) ∧ 𝑥 ≠ 𝑦) ∧ ((𝑘 ∈ 𝐽 ∧ 𝑙 ∈ 𝐽) ∧ (𝑥 ∈ 𝑘 ∧ 𝑦 ∈ 𝑙 ∧ (𝑘 ∩ 𝑙) = ∅))) → ¬ ∃𝑗 ∈ 𝐽 (𝑦 ∈ 𝑗 ∧ (𝑘 ∩ 𝐴) = (𝑗 ∩ 𝐴)))
97	45	anbi2d 642	. . . . . . . . . . . . . 14 ⊢ (𝑎 = (𝑘 ∩ 𝐴) → ((𝑦 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴)) ↔ (𝑦 ∈ 𝑗 ∧ (𝑘 ∩ 𝐴) = (𝑗 ∩ 𝐴))))
98	97	rexbidv 3187	. . . . . . . . . . . . 13 ⊢ (𝑎 = (𝑘 ∩ 𝐴) → (∃𝑗 ∈ 𝐽 (𝑦 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴)) ↔ ∃𝑗 ∈ 𝐽 (𝑦 ∈ 𝑗 ∧ (𝑘 ∩ 𝐴) = (𝑗 ∩ 𝐴))))
99	44, 98	elab 3633	. . . . . . . . . . . 12 ⊢ ((𝑘 ∩ 𝐴) ∈ {𝑎 ∣ ∃𝑗 ∈ 𝐽 (𝑦 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴))} ↔ ∃𝑗 ∈ 𝐽 (𝑦 ∈ 𝑗 ∧ (𝑘 ∩ 𝐴) = (𝑗 ∩ 𝐴)))
100	96, 99	sylnibr 332	. . . . . . . . . . 11 ⊢ (((((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) ∧ 𝑥 ≠ 𝑦) ∧ ((𝑘 ∈ 𝐽 ∧ 𝑙 ∈ 𝐽) ∧ (𝑥 ∈ 𝑘 ∧ 𝑦 ∈ 𝑙 ∧ (𝑘 ∩ 𝑙) = ∅))) → ¬ (𝑘 ∩ 𝐴) ∈ {𝑎 ∣ ∃𝑗 ∈ 𝐽 (𝑦 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴))})
101		nelne1 3053	. . . . . . . . . . 11 ⊢ (((𝑘 ∩ 𝐴) ∈ {𝑎 ∣ ∃𝑗 ∈ 𝐽 (𝑥 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴))} ∧ ¬ (𝑘 ∩ 𝐴) ∈ {𝑎 ∣ ∃𝑗 ∈ 𝐽 (𝑦 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴))}) → {𝑎 ∣ ∃𝑗 ∈ 𝐽 (𝑥 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴))} ≠ {𝑎 ∣ ∃𝑗 ∈ 𝐽 (𝑦 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴))})
102	49, 100, 101	syl2anc 596	. . . . . . . . . 10 ⊢ (((((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) ∧ 𝑥 ≠ 𝑦) ∧ ((𝑘 ∈ 𝐽 ∧ 𝑙 ∈ 𝐽) ∧ (𝑥 ∈ 𝑘 ∧ 𝑦 ∈ 𝑙 ∧ (𝑘 ∩ 𝑙) = ∅))) → {𝑎 ∣ ∃𝑗 ∈ 𝐽 (𝑥 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴))} ≠ {𝑎 ∣ ∃𝑗 ∈ 𝐽 (𝑦 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴))})
103	102	expr 462	. . . . . . . . 9 ⊢ (((((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) ∧ 𝑥 ≠ 𝑦) ∧ (𝑘 ∈ 𝐽 ∧ 𝑙 ∈ 𝐽)) → ((𝑥 ∈ 𝑘 ∧ 𝑦 ∈ 𝑙 ∧ (𝑘 ∩ 𝑙) = ∅) → {𝑎 ∣ ∃𝑗 ∈ 𝐽 (𝑥 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴))} ≠ {𝑎 ∣ ∃𝑗 ∈ 𝐽 (𝑦 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴))}))
104	103	rexlimdvva 3220	. . . . . . . 8 ⊢ ((((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) ∧ 𝑥 ≠ 𝑦) → (∃𝑘 ∈ 𝐽 ∃𝑙 ∈ 𝐽 (𝑥 ∈ 𝑘 ∧ 𝑦 ∈ 𝑙 ∧ (𝑘 ∩ 𝑙) = ∅) → {𝑎 ∣ ∃𝑗 ∈ 𝐽 (𝑥 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴))} ≠ {𝑎 ∣ ∃𝑗 ∈ 𝐽 (𝑦 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴))}))
105	33, 104	mpd 16	. . . . . . 7 ⊢ ((((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) ∧ 𝑥 ≠ 𝑦) → {𝑎 ∣ ∃𝑗 ∈ 𝐽 (𝑥 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴))} ≠ {𝑎 ∣ ∃𝑗 ∈ 𝐽 (𝑦 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴))})
106	105	ex 418	. . . . . 6 ⊢ (((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) → (𝑥 ≠ 𝑦 → {𝑎 ∣ ∃𝑗 ∈ 𝐽 (𝑥 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴))} ≠ {𝑎 ∣ ∃𝑗 ∈ 𝐽 (𝑦 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴))}))
107	106	necon4d 2980	. . . . 5 ⊢ (((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) → ({𝑎 ∣ ∃𝑗 ∈ 𝐽 (𝑥 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴))} = {𝑎 ∣ ∃𝑗 ∈ 𝐽 (𝑦 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴))} → 𝑥 = 𝑦))
108		eleq1 2849	. . . . . . . 8 ⊢ (𝑥 = 𝑦 → (𝑥 ∈ 𝑗 ↔ 𝑦 ∈ 𝑗))
109	108	anbi1d 643	. . . . . . 7 ⊢ (𝑥 = 𝑦 → ((𝑥 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴)) ↔ (𝑦 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴))))
110	109	rexbidv 3187	. . . . . 6 ⊢ (𝑥 = 𝑦 → (∃𝑗 ∈ 𝐽 (𝑥 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴)) ↔ ∃𝑗 ∈ 𝐽 (𝑦 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴))))
111	110	abbidv 2827	. . . . 5 ⊢ (𝑥 = 𝑦 → {𝑎 ∣ ∃𝑗 ∈ 𝐽 (𝑥 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴))} = {𝑎 ∣ ∃𝑗 ∈ 𝐽 (𝑦 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴))})
112	107, 111	impbid1 228	. . . 4 ⊢ (((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) ∧ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴))) → ({𝑎 ∣ ∃𝑗 ∈ 𝐽 (𝑥 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴))} = {𝑎 ∣ ∃𝑗 ∈ 𝐽 (𝑦 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴))} ↔ 𝑥 = 𝑦))
113	112	ex 418	. . 3 ⊢ ((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) → ((𝑥 ∈ ((cls‘𝐽)‘𝐴) ∧ 𝑦 ∈ ((cls‘𝐽)‘𝐴)) → ({𝑎 ∣ ∃𝑗 ∈ 𝐽 (𝑥 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴))} = {𝑎 ∣ ∃𝑗 ∈ 𝐽 (𝑦 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴))} ↔ 𝑥 = 𝑦)))
114	22, 113	dom2lem 9019	. 2 ⊢ ((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) → (𝑥 ∈ ((cls‘𝐽)‘𝐴) ↦ {𝑎 ∣ ∃𝑗 ∈ 𝐽 (𝑥 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴))}):((cls‘𝐽)‘𝐴)–1-1→𝒫 𝒫 𝐴)
115		hauspwpwf1.f	. . 3 ⊢ 𝐹 = (𝑥 ∈ ((cls‘𝐽)‘𝐴) ↦ {𝑎 ∣ ∃𝑗 ∈ 𝐽 (𝑥 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴))})
116		f1eq1 6773	. . 3 ⊢ (𝐹 = (𝑥 ∈ ((cls‘𝐽)‘𝐴) ↦ {𝑎 ∣ ∃𝑗 ∈ 𝐽 (𝑥 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴))}) → (𝐹:((cls‘𝐽)‘𝐴)–1-1→𝒫 𝒫 𝐴 ↔ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ↦ {𝑎 ∣ ∃𝑗 ∈ 𝐽 (𝑥 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴))}):((cls‘𝐽)‘𝐴)–1-1→𝒫 𝒫 𝐴))
117	115, 116	ax-mp 5	. 2 ⊢ (𝐹:((cls‘𝐽)‘𝐴)–1-1→𝒫 𝒫 𝐴 ↔ (𝑥 ∈ ((cls‘𝐽)‘𝐴) ↦ {𝑎 ∣ ∃𝑗 ∈ 𝐽 (𝑥 ∈ 𝑗 ∧ 𝑎 = (𝑗 ∩ 𝐴))}):((cls‘𝐽)‘𝐴)–1-1→𝒫 𝒫 𝐴)
118	114, 117	sylibr 237	1 ⊢ ((𝐽 ∈ Haus ∧ 𝐴 ⊆ 𝑋) → 𝐹:((cls‘𝐽)‘𝐴)–1-1→𝒫 𝒫 𝐴)

This proof depends on syntax axioms:  ¬ wn 3   → wi 4   ↔ wb 209   ∧ wa 401   ∧ w3a 1103   = wceq 1570  ∃wex 1812   ∈ wcel 2145  {cab 2739   ≠ wne 2956  ∃wrex 3087  Vcvv 3451   ∩ cin 3898   ⊆ wss 3899  ∅c0 4279  𝒫 cpw 4557  ∪ cuni 4867   ↦ cmpt 5186  –1-1→wf1 6535  ‘cfv 6538  Topctop 23211  clsccl 23336  Hauscha 23626

This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1943  ax-6 2000  ax-7 2041  ax-8 2147  ax-9 2155  ax-10 2178  ax-11 2194  ax-12 2213  ax-ext 2733  ax-rep 5232  ax-sep 5249  ax-nul 5260  ax-pow 5327  ax-pr 5391  ax-un 7751

This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-nf 1817  df-sb 2100  df-mo 2565  df-eu 2595  df-clab 2740  df-cleq 2753  df-clel 2836  df-nfc 2910  df-ne 2957  df-ral 3078  df-rex 3088  df-reu 3367  df-rab 3414  df-v 3453  df-sbc 3740  df-csb 3848  df-dif 3902  df-un 3904  df-in 3906  df-ss 3916  df-nul 4280  df-if 4483  df-pw 4559  df-sn 4585  df-pr 4587  df-op 4591  df-uni 4868  df-int 4908  df-iun 4953  df-iin 4954  df-br 5104  df-opab 5168  df-mpt 5187  df-id 5546  df-xp 5657  df-rel 5658  df-cnv 5659  df-co 5660  df-dm 5661  df-rn 5662  df-res 5663  df-ima 5664  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-top 23212  df-cld 23337  df-ntr 23338  df-cls 23339  df-haus 23633

This theorem is used by:  hauspwpwdom  24307