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Theorem csdfil 22648
Description: The set of all elements whose complement is dominated by the base set is a filter. (Contributed by Mario Carneiro, 14-Dec-2013.) (Revised by Stefan O'Rear, 2-Aug-2015.)
Assertion
Ref Expression
csdfil ((𝑋 ∈ dom card ∧ ω ≼ 𝑋) → {𝑥 ∈ 𝒫 𝑋 ∣ (𝑋𝑥) ≺ 𝑋} ∈ (Fil‘𝑋))
Distinct variable group:   𝑥,𝑋

Proof of Theorem csdfil
Dummy variables 𝑤 𝑦 𝑧 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 difeq2 4008 . . . . . 6 (𝑥 = 𝑦 → (𝑋𝑥) = (𝑋𝑦))
21breq1d 5041 . . . . 5 (𝑥 = 𝑦 → ((𝑋𝑥) ≺ 𝑋 ↔ (𝑋𝑦) ≺ 𝑋))
32elrab 3589 . . . 4 (𝑦 ∈ {𝑥 ∈ 𝒫 𝑋 ∣ (𝑋𝑥) ≺ 𝑋} ↔ (𝑦 ∈ 𝒫 𝑋 ∧ (𝑋𝑦) ≺ 𝑋))
4 velpw 4494 . . . . 5 (𝑦 ∈ 𝒫 𝑋𝑦𝑋)
54anbi1i 627 . . . 4 ((𝑦 ∈ 𝒫 𝑋 ∧ (𝑋𝑦) ≺ 𝑋) ↔ (𝑦𝑋 ∧ (𝑋𝑦) ≺ 𝑋))
63, 5bitri 278 . . 3 (𝑦 ∈ {𝑥 ∈ 𝒫 𝑋 ∣ (𝑋𝑥) ≺ 𝑋} ↔ (𝑦𝑋 ∧ (𝑋𝑦) ≺ 𝑋))
76a1i 11 . 2 ((𝑋 ∈ dom card ∧ ω ≼ 𝑋) → (𝑦 ∈ {𝑥 ∈ 𝒫 𝑋 ∣ (𝑋𝑥) ≺ 𝑋} ↔ (𝑦𝑋 ∧ (𝑋𝑦) ≺ 𝑋)))
8 simpl 486 . 2 ((𝑋 ∈ dom card ∧ ω ≼ 𝑋) → 𝑋 ∈ dom card)
9 difid 4260 . . . 4 (𝑋𝑋) = ∅
10 infn0 8857 . . . . . 6 (ω ≼ 𝑋𝑋 ≠ ∅)
1110adantl 485 . . . . 5 ((𝑋 ∈ dom card ∧ ω ≼ 𝑋) → 𝑋 ≠ ∅)
12 0sdomg 8699 . . . . . 6 (𝑋 ∈ dom card → (∅ ≺ 𝑋𝑋 ≠ ∅))
1312adantr 484 . . . . 5 ((𝑋 ∈ dom card ∧ ω ≼ 𝑋) → (∅ ≺ 𝑋𝑋 ≠ ∅))
1411, 13mpbird 260 . . . 4 ((𝑋 ∈ dom card ∧ ω ≼ 𝑋) → ∅ ≺ 𝑋)
159, 14eqbrtrid 5066 . . 3 ((𝑋 ∈ dom card ∧ ω ≼ 𝑋) → (𝑋𝑋) ≺ 𝑋)
16 difeq2 4008 . . . . . 6 (𝑦 = 𝑋 → (𝑋𝑦) = (𝑋𝑋))
1716breq1d 5041 . . . . 5 (𝑦 = 𝑋 → ((𝑋𝑦) ≺ 𝑋 ↔ (𝑋𝑋) ≺ 𝑋))
1817sbcieg 3721 . . . 4 (𝑋 ∈ dom card → ([𝑋 / 𝑦](𝑋𝑦) ≺ 𝑋 ↔ (𝑋𝑋) ≺ 𝑋))
1918adantr 484 . . 3 ((𝑋 ∈ dom card ∧ ω ≼ 𝑋) → ([𝑋 / 𝑦](𝑋𝑦) ≺ 𝑋 ↔ (𝑋𝑋) ≺ 𝑋))
2015, 19mpbird 260 . 2 ((𝑋 ∈ dom card ∧ ω ≼ 𝑋) → [𝑋 / 𝑦](𝑋𝑦) ≺ 𝑋)
21 sdomirr 8707 . . 3 ¬ 𝑋𝑋
22 0ex 5176 . . . . 5 ∅ ∈ V
23 difeq2 4008 . . . . . . 7 (𝑦 = ∅ → (𝑋𝑦) = (𝑋 ∖ ∅))
24 dif0 4262 . . . . . . 7 (𝑋 ∖ ∅) = 𝑋
2523, 24eqtrdi 2790 . . . . . 6 (𝑦 = ∅ → (𝑋𝑦) = 𝑋)
2625breq1d 5041 . . . . 5 (𝑦 = ∅ → ((𝑋𝑦) ≺ 𝑋𝑋𝑋))
2722, 26sbcie 3723 . . . 4 ([∅ / 𝑦](𝑋𝑦) ≺ 𝑋𝑋𝑋)
2827a1i 11 . . 3 ((𝑋 ∈ dom card ∧ ω ≼ 𝑋) → ([∅ / 𝑦](𝑋𝑦) ≺ 𝑋𝑋𝑋))
2921, 28mtbiri 330 . 2 ((𝑋 ∈ dom card ∧ ω ≼ 𝑋) → ¬ [∅ / 𝑦](𝑋𝑦) ≺ 𝑋)
30 simp1l 1198 . . . . . 6 (((𝑋 ∈ dom card ∧ ω ≼ 𝑋) ∧ 𝑧𝑋𝑤𝑧) → 𝑋 ∈ dom card)
3130difexd 5198 . . . . 5 (((𝑋 ∈ dom card ∧ ω ≼ 𝑋) ∧ 𝑧𝑋𝑤𝑧) → (𝑋𝑤) ∈ V)
32 sscon 4030 . . . . . 6 (𝑤𝑧 → (𝑋𝑧) ⊆ (𝑋𝑤))
33323ad2ant3 1136 . . . . 5 (((𝑋 ∈ dom card ∧ ω ≼ 𝑋) ∧ 𝑧𝑋𝑤𝑧) → (𝑋𝑧) ⊆ (𝑋𝑤))
34 ssdomg 8604 . . . . 5 ((𝑋𝑤) ∈ V → ((𝑋𝑧) ⊆ (𝑋𝑤) → (𝑋𝑧) ≼ (𝑋𝑤)))
3531, 33, 34sylc 65 . . . 4 (((𝑋 ∈ dom card ∧ ω ≼ 𝑋) ∧ 𝑧𝑋𝑤𝑧) → (𝑋𝑧) ≼ (𝑋𝑤))
36 domsdomtr 8705 . . . . 5 (((𝑋𝑧) ≼ (𝑋𝑤) ∧ (𝑋𝑤) ≺ 𝑋) → (𝑋𝑧) ≺ 𝑋)
3736ex 416 . . . 4 ((𝑋𝑧) ≼ (𝑋𝑤) → ((𝑋𝑤) ≺ 𝑋 → (𝑋𝑧) ≺ 𝑋))
3835, 37syl 17 . . 3 (((𝑋 ∈ dom card ∧ ω ≼ 𝑋) ∧ 𝑧𝑋𝑤𝑧) → ((𝑋𝑤) ≺ 𝑋 → (𝑋𝑧) ≺ 𝑋))
39 vex 3403 . . . 4 𝑤 ∈ V
40 difeq2 4008 . . . . 5 (𝑦 = 𝑤 → (𝑋𝑦) = (𝑋𝑤))
4140breq1d 5041 . . . 4 (𝑦 = 𝑤 → ((𝑋𝑦) ≺ 𝑋 ↔ (𝑋𝑤) ≺ 𝑋))
4239, 41sbcie 3723 . . 3 ([𝑤 / 𝑦](𝑋𝑦) ≺ 𝑋 ↔ (𝑋𝑤) ≺ 𝑋)
43 vex 3403 . . . 4 𝑧 ∈ V
44 difeq2 4008 . . . . 5 (𝑦 = 𝑧 → (𝑋𝑦) = (𝑋𝑧))
4544breq1d 5041 . . . 4 (𝑦 = 𝑧 → ((𝑋𝑦) ≺ 𝑋 ↔ (𝑋𝑧) ≺ 𝑋))
4643, 45sbcie 3723 . . 3 ([𝑧 / 𝑦](𝑋𝑦) ≺ 𝑋 ↔ (𝑋𝑧) ≺ 𝑋)
4738, 42, 463imtr4g 299 . 2 (((𝑋 ∈ dom card ∧ ω ≼ 𝑋) ∧ 𝑧𝑋𝑤𝑧) → ([𝑤 / 𝑦](𝑋𝑦) ≺ 𝑋[𝑧 / 𝑦](𝑋𝑦) ≺ 𝑋))
48 infunsdom 9717 . . . . . 6 (((𝑋 ∈ dom card ∧ ω ≼ 𝑋) ∧ ((𝑋𝑧) ≺ 𝑋 ∧ (𝑋𝑤) ≺ 𝑋)) → ((𝑋𝑧) ∪ (𝑋𝑤)) ≺ 𝑋)
4948ex 416 . . . . 5 ((𝑋 ∈ dom card ∧ ω ≼ 𝑋) → (((𝑋𝑧) ≺ 𝑋 ∧ (𝑋𝑤) ≺ 𝑋) → ((𝑋𝑧) ∪ (𝑋𝑤)) ≺ 𝑋))
50 difindi 4173 . . . . . 6 (𝑋 ∖ (𝑧𝑤)) = ((𝑋𝑧) ∪ (𝑋𝑤))
5150breq1i 5038 . . . . 5 ((𝑋 ∖ (𝑧𝑤)) ≺ 𝑋 ↔ ((𝑋𝑧) ∪ (𝑋𝑤)) ≺ 𝑋)
5249, 51syl6ibr 255 . . . 4 ((𝑋 ∈ dom card ∧ ω ≼ 𝑋) → (((𝑋𝑧) ≺ 𝑋 ∧ (𝑋𝑤) ≺ 𝑋) → (𝑋 ∖ (𝑧𝑤)) ≺ 𝑋))
53523ad2ant1 1134 . . 3 (((𝑋 ∈ dom card ∧ ω ≼ 𝑋) ∧ 𝑧𝑋𝑤𝑋) → (((𝑋𝑧) ≺ 𝑋 ∧ (𝑋𝑤) ≺ 𝑋) → (𝑋 ∖ (𝑧𝑤)) ≺ 𝑋))
5446, 42anbi12i 630 . . 3 (([𝑧 / 𝑦](𝑋𝑦) ≺ 𝑋[𝑤 / 𝑦](𝑋𝑦) ≺ 𝑋) ↔ ((𝑋𝑧) ≺ 𝑋 ∧ (𝑋𝑤) ≺ 𝑋))
5543inex1 5186 . . . 4 (𝑧𝑤) ∈ V
56 difeq2 4008 . . . . 5 (𝑦 = (𝑧𝑤) → (𝑋𝑦) = (𝑋 ∖ (𝑧𝑤)))
5756breq1d 5041 . . . 4 (𝑦 = (𝑧𝑤) → ((𝑋𝑦) ≺ 𝑋 ↔ (𝑋 ∖ (𝑧𝑤)) ≺ 𝑋))
5855, 57sbcie 3723 . . 3 ([(𝑧𝑤) / 𝑦](𝑋𝑦) ≺ 𝑋 ↔ (𝑋 ∖ (𝑧𝑤)) ≺ 𝑋)
5953, 54, 583imtr4g 299 . 2 (((𝑋 ∈ dom card ∧ ω ≼ 𝑋) ∧ 𝑧𝑋𝑤𝑋) → (([𝑧 / 𝑦](𝑋𝑦) ≺ 𝑋[𝑤 / 𝑦](𝑋𝑦) ≺ 𝑋) → [(𝑧𝑤) / 𝑦](𝑋𝑦) ≺ 𝑋))
607, 8, 20, 29, 47, 59isfild 22612 1 ((𝑋 ∈ dom card ∧ ω ≼ 𝑋) → {𝑥 ∈ 𝒫 𝑋 ∣ (𝑋𝑥) ≺ 𝑋} ∈ (Fil‘𝑋))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 209  wa 399  w3a 1088   = wceq 1542  wcel 2114  wne 2935  {crab 3058  Vcvv 3399  [wsbc 3681  cdif 3841  cun 3842  cin 3843  wss 3844  c0 4212  𝒫 cpw 4489   class class class wbr 5031  dom cdm 5526  cfv 6340  ωcom 7602  cdom 8556  csdm 8557  cardccrd 9440  Filcfil 22599
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1802  ax-4 1816  ax-5 1917  ax-6 1975  ax-7 2020  ax-8 2116  ax-9 2124  ax-10 2145  ax-11 2162  ax-12 2179  ax-ext 2711  ax-rep 5155  ax-sep 5168  ax-nul 5175  ax-pow 5233  ax-pr 5297  ax-un 7482  ax-inf2 9180
This theorem depends on definitions:  df-bi 210  df-an 400  df-or 847  df-3or 1089  df-3an 1090  df-tru 1545  df-fal 1555  df-ex 1787  df-nf 1791  df-sb 2075  df-mo 2541  df-eu 2571  df-clab 2718  df-cleq 2731  df-clel 2812  df-nfc 2882  df-ne 2936  df-nel 3040  df-ral 3059  df-rex 3060  df-reu 3061  df-rmo 3062  df-rab 3063  df-v 3401  df-sbc 3682  df-csb 3792  df-dif 3847  df-un 3849  df-in 3851  df-ss 3861  df-pss 3863  df-nul 4213  df-if 4416  df-pw 4491  df-sn 4518  df-pr 4520  df-tp 4522  df-op 4524  df-uni 4798  df-int 4838  df-iun 4884  df-br 5032  df-opab 5094  df-mpt 5112  df-tr 5138  df-id 5430  df-eprel 5435  df-po 5443  df-so 5444  df-fr 5484  df-se 5485  df-we 5486  df-xp 5532  df-rel 5533  df-cnv 5534  df-co 5535  df-dm 5536  df-rn 5537  df-res 5538  df-ima 5539  df-pred 6130  df-ord 6176  df-on 6177  df-lim 6178  df-suc 6179  df-iota 6298  df-fun 6342  df-fn 6343  df-f 6344  df-f1 6345  df-fo 6346  df-f1o 6347  df-fv 6348  df-isom 6349  df-riota 7130  df-om 7603  df-1st 7717  df-2nd 7718  df-wrecs 7979  df-recs 8040  df-rdg 8078  df-1o 8134  df-2o 8135  df-er 8323  df-en 8559  df-dom 8560  df-sdom 8561  df-fin 8562  df-oi 9050  df-dju 9406  df-card 9444  df-fbas 20217  df-fil 22600
This theorem is referenced by:  ufilen  22684
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