Theorem elpw2 4248

Description: Membership in a power class. Theorem 86 of [Suppes] p. 47. (Contributed by NM, 11-Oct-2007.)

Hypothesis

Ref	Expression
elpw2.1	⊢ 𝐵 ∈ V

Assertion

Ref	Expression
elpw2	⊢ (𝐴 ∈ 𝒫 𝐵 ↔ 𝐴 ⊆ 𝐵)

Proof of Theorem elpw2

Step	Hyp	Ref	Expression
1		elpw2.1	. 2 ⊢ 𝐵 ∈ V
2		elpw2g 4247	. 2 ⊢ (𝐵 ∈ V → (𝐴 ∈ 𝒫 𝐵 ↔ 𝐴 ⊆ 𝐵))
3	1, 2	ax-mp 5	1 ⊢ (𝐴 ∈ 𝒫 𝐵 ↔ 𝐴 ⊆ 𝐵)

Syntax hints:   ↔ wb 105   ∈ wcel 2201  Vcvv 2801   ⊆ wss 3199  𝒫 cpw 3653

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 716  ax-5 1495  ax-7 1496  ax-gen 1497  ax-ie1 1541  ax-ie2 1542  ax-8 1552  ax-10 1553  ax-11 1554  ax-i12 1555  ax-bndl 1557  ax-4 1558  ax-17 1574  ax-i9 1578  ax-ial 1582  ax-i5r 1583  ax-ext 2212  ax-sep 4208

This theorem depends on definitions:  df-bi 117  df-tru 1400  df-nf 1509  df-sb 1810  df-clab 2217  df-cleq 2223  df-clel 2226  df-nfc 2362  df-v 2803  df-in 3205  df-ss 3212  df-pw 3655

This theorem is referenced by:  elpwi2  4249  axpweq  4263  genpelxp  7736  ltexprlempr  7833  recexprlempr  7857  cauappcvgprlemcl  7878  cauappcvgprlemladd  7883  caucvgprlemcl  7901  caucvgprprlemcl  7929  uzf  9763  ixxf  10138  fzf  10252  cncfval  15325  reldvg  15432  dvfvalap  15434  plyval  15485