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Theorem elpw2 4190
Description: Membership in a power class. Theorem 86 of [Suppes] p. 47. (Contributed by NM, 11-Oct-2007.)
Hypothesis
Ref Expression
elpw2.1  |-  B  e. 
_V
Assertion
Ref Expression
elpw2  |-  ( A  e.  ~P B  <->  A  C_  B
)

Proof of Theorem elpw2
StepHypRef Expression
1 elpw2.1 . 2  |-  B  e. 
_V
2 elpw2g 4189 . 2  |-  ( B  e.  _V  ->  ( A  e.  ~P B  <->  A 
C_  B ) )
31, 2ax-mp 5 1  |-  ( A  e.  ~P B  <->  A  C_  B
)
Colors of variables: wff set class
Syntax hints:    <-> wb 105    e. wcel 2167   _Vcvv 2763    C_ wss 3157   ~Pcpw 3605
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 710  ax-5 1461  ax-7 1462  ax-gen 1463  ax-ie1 1507  ax-ie2 1508  ax-8 1518  ax-10 1519  ax-11 1520  ax-i12 1521  ax-bndl 1523  ax-4 1524  ax-17 1540  ax-i9 1544  ax-ial 1548  ax-i5r 1549  ax-ext 2178  ax-sep 4151
This theorem depends on definitions:  df-bi 117  df-tru 1367  df-nf 1475  df-sb 1777  df-clab 2183  df-cleq 2189  df-clel 2192  df-nfc 2328  df-v 2765  df-in 3163  df-ss 3170  df-pw 3607
This theorem is referenced by:  elpwi2  4191  axpweq  4204  genpelxp  7578  ltexprlempr  7675  recexprlempr  7699  cauappcvgprlemcl  7720  cauappcvgprlemladd  7725  caucvgprlemcl  7743  caucvgprprlemcl  7771  uzf  9604  ixxf  9973  fzf  10087  cncfval  14808  reldvg  14915  dvfvalap  14917  plyval  14968
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