Theorem uffix 22053

Description: Lemma for fixufil 22054 and uffixfr 22055. (Contributed by Mario Carneiro, 12-Dec-2013.) (Revised by Stefan O'Rear, 2-Aug-2015.)

Assertion

Ref	Expression
uffix	⊢ ((𝑋 ∈ 𝑉 ∧ 𝐴 ∈ 𝑋) → ({{𝐴}} ∈ (fBas‘𝑋) ∧ {𝑥 ∈ 𝒫 𝑋 ∣ 𝐴 ∈ 𝑥} = (𝑋filGen{{𝐴}})))

Distinct variable groups:   𝑥,𝐴   𝑥,𝑋   𝑥,𝑉

Proof of Theorem uffix

Dummy variable 𝑦 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		snssi 4527	. . . 4 ⊢ (𝐴 ∈ 𝑋 → {𝐴} ⊆ 𝑋)
2	1	adantl 474	. . 3 ⊢ ((𝑋 ∈ 𝑉 ∧ 𝐴 ∈ 𝑋) → {𝐴} ⊆ 𝑋)
3		snnzg 4496	. . . 4 ⊢ (𝐴 ∈ 𝑋 → {𝐴} ≠ ∅)
4	3	adantl 474	. . 3 ⊢ ((𝑋 ∈ 𝑉 ∧ 𝐴 ∈ 𝑋) → {𝐴} ≠ ∅)
5		simpl 475	. . 3 ⊢ ((𝑋 ∈ 𝑉 ∧ 𝐴 ∈ 𝑋) → 𝑋 ∈ 𝑉)
6		snfbas 21998	. . 3 ⊢ (({𝐴} ⊆ 𝑋 ∧ {𝐴} ≠ ∅ ∧ 𝑋 ∈ 𝑉) → {{𝐴}} ∈ (fBas‘𝑋))
7	2, 4, 5, 6	syl3anc 1491	. 2 ⊢ ((𝑋 ∈ 𝑉 ∧ 𝐴 ∈ 𝑋) → {{𝐴}} ∈ (fBas‘𝑋))
8		selpw 4356	. . . . . 6 ⊢ (𝑦 ∈ 𝒫 𝑋 ↔ 𝑦 ⊆ 𝑋)
9	8	a1i 11	. . . . 5 ⊢ ((𝑋 ∈ 𝑉 ∧ 𝐴 ∈ 𝑋) → (𝑦 ∈ 𝒫 𝑋 ↔ 𝑦 ⊆ 𝑋))
10		snex 5099	. . . . . . . 8 ⊢ {𝐴} ∈ V
11	10	snid 4400	. . . . . . 7 ⊢ {𝐴} ∈ {{𝐴}}
12		snssi 4527	. . . . . . 7 ⊢ (𝐴 ∈ 𝑦 → {𝐴} ⊆ 𝑦)
13		sseq1 3822	. . . . . . . 8 ⊢ (𝑥 = {𝐴} → (𝑥 ⊆ 𝑦 ↔ {𝐴} ⊆ 𝑦))
14	13	rspcev 3497	. . . . . . 7 ⊢ (({𝐴} ∈ {{𝐴}} ∧ {𝐴} ⊆ 𝑦) → ∃𝑥 ∈ {{𝐴}}𝑥 ⊆ 𝑦)
15	11, 12, 14	sylancr 582	. . . . . 6 ⊢ (𝐴 ∈ 𝑦 → ∃𝑥 ∈ {{𝐴}}𝑥 ⊆ 𝑦)
16		intss1 4682	. . . . . . . . 9 ⊢ (𝑥 ∈ {{𝐴}} → ∩ {{𝐴}} ⊆ 𝑥)
17		sstr2 3805	. . . . . . . . 9 ⊢ (∩ {{𝐴}} ⊆ 𝑥 → (𝑥 ⊆ 𝑦 → ∩ {{𝐴}} ⊆ 𝑦))
18	16, 17	syl 17	. . . . . . . 8 ⊢ (𝑥 ∈ {{𝐴}} → (𝑥 ⊆ 𝑦 → ∩ {{𝐴}} ⊆ 𝑦))
19		snidg 4398	. . . . . . . . . . 11 ⊢ (𝐴 ∈ 𝑋 → 𝐴 ∈ {𝐴})
20	19	adantl 474	. . . . . . . . . 10 ⊢ ((𝑋 ∈ 𝑉 ∧ 𝐴 ∈ 𝑋) → 𝐴 ∈ {𝐴})
21	10	intsn 4703	. . . . . . . . . 10 ⊢ ∩ {{𝐴}} = {𝐴}
22	20, 21	syl6eleqr 2889	. . . . . . . . 9 ⊢ ((𝑋 ∈ 𝑉 ∧ 𝐴 ∈ 𝑋) → 𝐴 ∈ ∩ {{𝐴}})
23		ssel 3792	. . . . . . . . 9 ⊢ (∩ {{𝐴}} ⊆ 𝑦 → (𝐴 ∈ ∩ {{𝐴}} → 𝐴 ∈ 𝑦))
24	22, 23	syl5com 31	. . . . . . . 8 ⊢ ((𝑋 ∈ 𝑉 ∧ 𝐴 ∈ 𝑋) → (∩ {{𝐴}} ⊆ 𝑦 → 𝐴 ∈ 𝑦))
25	18, 24	sylan9r 505	. . . . . . 7 ⊢ (((𝑋 ∈ 𝑉 ∧ 𝐴 ∈ 𝑋) ∧ 𝑥 ∈ {{𝐴}}) → (𝑥 ⊆ 𝑦 → 𝐴 ∈ 𝑦))
26	25	rexlimdva 3212	. . . . . 6 ⊢ ((𝑋 ∈ 𝑉 ∧ 𝐴 ∈ 𝑋) → (∃𝑥 ∈ {{𝐴}}𝑥 ⊆ 𝑦 → 𝐴 ∈ 𝑦))
27	15, 26	impbid2 218	. . . . 5 ⊢ ((𝑋 ∈ 𝑉 ∧ 𝐴 ∈ 𝑋) → (𝐴 ∈ 𝑦 ↔ ∃𝑥 ∈ {{𝐴}}𝑥 ⊆ 𝑦))
28	9, 27	anbi12d 625	. . . 4 ⊢ ((𝑋 ∈ 𝑉 ∧ 𝐴 ∈ 𝑋) → ((𝑦 ∈ 𝒫 𝑋 ∧ 𝐴 ∈ 𝑦) ↔ (𝑦 ⊆ 𝑋 ∧ ∃𝑥 ∈ {{𝐴}}𝑥 ⊆ 𝑦)))
29		eleq2w 2862	. . . . . 6 ⊢ (𝑥 = 𝑦 → (𝐴 ∈ 𝑥 ↔ 𝐴 ∈ 𝑦))
30	29	elrab 3556	. . . . 5 ⊢ (𝑦 ∈ {𝑥 ∈ 𝒫 𝑋 ∣ 𝐴 ∈ 𝑥} ↔ (𝑦 ∈ 𝒫 𝑋 ∧ 𝐴 ∈ 𝑦))
31	30	a1i 11	. . . 4 ⊢ ((𝑋 ∈ 𝑉 ∧ 𝐴 ∈ 𝑋) → (𝑦 ∈ {𝑥 ∈ 𝒫 𝑋 ∣ 𝐴 ∈ 𝑥} ↔ (𝑦 ∈ 𝒫 𝑋 ∧ 𝐴 ∈ 𝑦)))
32		elfg 22003	. . . . 5 ⊢ ({{𝐴}} ∈ (fBas‘𝑋) → (𝑦 ∈ (𝑋filGen{{𝐴}}) ↔ (𝑦 ⊆ 𝑋 ∧ ∃𝑥 ∈ {{𝐴}}𝑥 ⊆ 𝑦)))
33	7, 32	syl 17	. . . 4 ⊢ ((𝑋 ∈ 𝑉 ∧ 𝐴 ∈ 𝑋) → (𝑦 ∈ (𝑋filGen{{𝐴}}) ↔ (𝑦 ⊆ 𝑋 ∧ ∃𝑥 ∈ {{𝐴}}𝑥 ⊆ 𝑦)))
34	28, 31, 33	3bitr4d 303	. . 3 ⊢ ((𝑋 ∈ 𝑉 ∧ 𝐴 ∈ 𝑋) → (𝑦 ∈ {𝑥 ∈ 𝒫 𝑋 ∣ 𝐴 ∈ 𝑥} ↔ 𝑦 ∈ (𝑋filGen{{𝐴}})))
35	34	eqrdv 2797	. 2 ⊢ ((𝑋 ∈ 𝑉 ∧ 𝐴 ∈ 𝑋) → {𝑥 ∈ 𝒫 𝑋 ∣ 𝐴 ∈ 𝑥} = (𝑋filGen{{𝐴}}))
36	7, 35	jca 508	1 ⊢ ((𝑋 ∈ 𝑉 ∧ 𝐴 ∈ 𝑋) → ({{𝐴}} ∈ (fBas‘𝑋) ∧ {𝑥 ∈ 𝒫 𝑋 ∣ 𝐴 ∈ 𝑥} = (𝑋filGen{{𝐴}})))

Syntax hints:   → wi 4   ↔ wb 198   ∧ wa 385   = wceq 1653   ∈ wcel 2157   ≠ wne 2971  ∃wrex 3090  {crab 3093   ⊆ wss 3769  ∅c0 4115  𝒫 cpw 4349  {csn 4368  ∩ cint 4667  ‘cfv 6101  (class class class)co 6878  fBascfbas 20056  filGencfg 20057

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1891  ax-4 1905  ax-5 2006  ax-6 2072  ax-7 2107  ax-8 2159  ax-9 2166  ax-10 2185  ax-11 2200  ax-12 2213  ax-13 2377  ax-ext 2777  ax-sep 4975  ax-nul 4983  ax-pow 5035  ax-pr 5097

This theorem depends on definitions:  df-bi 199  df-an 386  df-or 875  df-3an 1110  df-tru 1657  df-ex 1876  df-nf 1880  df-sb 2065  df-mo 2591  df-eu 2609  df-clab 2786  df-cleq 2792  df-clel 2795  df-nfc 2930  df-ne 2972  df-nel 3075  df-ral 3094  df-rex 3095  df-rab 3098  df-v 3387  df-sbc 3634  df-csb 3729  df-dif 3772  df-un 3774  df-in 3776  df-ss 3783  df-nul 4116  df-if 4278  df-pw 4351  df-sn 4369  df-pr 4371  df-op 4375  df-uni 4629  df-int 4668  df-br 4844  df-opab 4906  df-mpt 4923  df-id 5220  df-xp 5318  df-rel 5319  df-cnv 5320  df-co 5321  df-dm 5322  df-rn 5323  df-res 5324  df-ima 5325  df-iota 6064  df-fun 6103  df-fv 6109  df-ov 6881  df-oprab 6882  df-mpt2 6883  df-fbas 20065  df-fg 20066  df-fil 21978

This theorem is referenced by:  fixufil  22054  uffixfr  22055