Theorem elpw2 4241

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 4240	. 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 2200  Vcvv 2799   ⊆ wss 3197  𝒫 cpw 3649

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 714  ax-5 1493  ax-7 1494  ax-gen 1495  ax-ie1 1539  ax-ie2 1540  ax-8 1550  ax-10 1551  ax-11 1552  ax-i12 1553  ax-bndl 1555  ax-4 1556  ax-17 1572  ax-i9 1576  ax-ial 1580  ax-i5r 1581  ax-ext 2211  ax-sep 4202

This theorem depends on definitions:  df-bi 117  df-tru 1398  df-nf 1507  df-sb 1809  df-clab 2216  df-cleq 2222  df-clel 2225  df-nfc 2361  df-v 2801  df-in 3203  df-ss 3210  df-pw 3651

This theorem is referenced by:  elpwi2  4242  axpweq  4255  genpelxp  7706  ltexprlempr  7803  recexprlempr  7827  cauappcvgprlemcl  7848  cauappcvgprlemladd  7853  caucvgprlemcl  7871  caucvgprprlemcl  7899  uzf  9733  ixxf  10102  fzf  10216  cncfval  15254  reldvg  15361  dvfvalap  15363  plyval  15414