Theorem elpw2 4220

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 4219	. 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 2180  Vcvv 2779   ⊆ wss 3177  𝒫 cpw 3629

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 713  ax-5 1473  ax-7 1474  ax-gen 1475  ax-ie1 1519  ax-ie2 1520  ax-8 1530  ax-10 1531  ax-11 1532  ax-i12 1533  ax-bndl 1535  ax-4 1536  ax-17 1552  ax-i9 1556  ax-ial 1560  ax-i5r 1561  ax-ext 2191  ax-sep 4181

This theorem depends on definitions:  df-bi 117  df-tru 1378  df-nf 1487  df-sb 1789  df-clab 2196  df-cleq 2202  df-clel 2205  df-nfc 2341  df-v 2781  df-in 3183  df-ss 3190  df-pw 3631

This theorem is referenced by:  elpwi2  4221  axpweq  4234  genpelxp  7666  ltexprlempr  7763  recexprlempr  7787  cauappcvgprlemcl  7808  cauappcvgprlemladd  7813  caucvgprlemcl  7831  caucvgprprlemcl  7859  uzf  9693  ixxf  10062  fzf  10176  cncfval  15211  reldvg  15318  dvfvalap  15320  plyval  15371