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Theorem elpw2 4205
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 4204 . 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 2177   _Vcvv 2773    C_ wss 3167   ~Pcpw 3617
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 711  ax-5 1471  ax-7 1472  ax-gen 1473  ax-ie1 1517  ax-ie2 1518  ax-8 1528  ax-10 1529  ax-11 1530  ax-i12 1531  ax-bndl 1533  ax-4 1534  ax-17 1550  ax-i9 1554  ax-ial 1558  ax-i5r 1559  ax-ext 2188  ax-sep 4166
This theorem depends on definitions:  df-bi 117  df-tru 1376  df-nf 1485  df-sb 1787  df-clab 2193  df-cleq 2199  df-clel 2202  df-nfc 2338  df-v 2775  df-in 3173  df-ss 3180  df-pw 3619
This theorem is referenced by:  elpwi2  4206  axpweq  4219  genpelxp  7631  ltexprlempr  7728  recexprlempr  7752  cauappcvgprlemcl  7773  cauappcvgprlemladd  7778  caucvgprlemcl  7796  caucvgprprlemcl  7824  uzf  9658  ixxf  10027  fzf  10141  cncfval  15088  reldvg  15195  dvfvalap  15197  plyval  15248
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