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Theorem 0pwfi 45095
Description: The empty set is in any power set, and it's finite. (Contributed by Glauco Siliprandi, 17-Aug-2020.)
Assertion
Ref Expression
0pwfi ∅ ∈ (𝒫 𝐴 ∩ Fin)

Proof of Theorem 0pwfi
StepHypRef Expression
1 0elpw 5294 . 2 ∅ ∈ 𝒫 𝐴
2 0fi 8964 . 2 ∅ ∈ Fin
31, 2elini 4149 1 ∅ ∈ (𝒫 𝐴 ∩ Fin)
Colors of variables: wff setvar class
Syntax hints:  wcel 2111  cin 3901  c0 4283  𝒫 cpw 4550  Fincfn 8869
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1968  ax-7 2009  ax-8 2113  ax-9 2121  ax-12 2180  ax-ext 2703  ax-sep 5234  ax-nul 5244  ax-pr 5370
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3or 1087  df-3an 1088  df-tru 1544  df-fal 1554  df-ex 1781  df-sb 2068  df-mo 2535  df-clab 2710  df-cleq 2723  df-clel 2806  df-ne 2929  df-ral 3048  df-rex 3057  df-rab 3396  df-v 3438  df-dif 3905  df-un 3907  df-in 3909  df-ss 3919  df-pss 3922  df-nul 4284  df-if 4476  df-pw 4552  df-sn 4577  df-pr 4579  df-op 4583  df-uni 4860  df-br 5092  df-opab 5154  df-tr 5199  df-id 5511  df-eprel 5516  df-po 5524  df-so 5525  df-fr 5569  df-we 5571  df-xp 5622  df-rel 5623  df-cnv 5624  df-co 5625  df-dm 5626  df-rn 5627  df-ord 6309  df-on 6310  df-lim 6311  df-fun 6483  df-fn 6484  df-f 6485  df-f1 6486  df-fo 6487  df-f1o 6488  df-om 7797  df-en 8870  df-fin 8873
This theorem is referenced by:  pwfin0  45098
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