Theorem pwexg 4276

Description: Power set axiom expressed in class notation, with the sethood requirement as an antecedent. (Contributed by NM, 30-Oct-2003.)

Assertion

Ref	Expression
pwexg	|- ( A e. V -> ~P A e. _V )

Proof of Theorem pwexg

Dummy variable x is distinct from all other variables.

Step	Hyp	Ref	Expression
1		pweq 3659	. . 3 |- ( x = A -> ~P x = ~P A )
2	1	eleq1d 2300	. 2 |- ( x = A -> ( ~P x e. _V <-> ~P A e. _V ) )
3		vpwex 4275	. 2 |- ~P x e. _V
4	2, 3	vtoclg 2865	1 |- ( A e. V -> ~P A e. _V )

Syntax hints:   -> wi 4   = wceq 1398   e. wcel 2202   _Vcvv 2803   ~Pcpw 3656

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 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-14 2205  ax-ext 2213  ax-sep 4212  ax-pow 4270

This theorem depends on definitions:  df-bi 117  df-tru 1401  df-nf 1510  df-sb 1811  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2364  df-v 2805  df-in 3207  df-ss 3214  df-pw 3658

This theorem is referenced by:  pwexd  4277  abssexg  4278  pwex  4279  snexg  4280  pwel  4316  uniexb  4576  xpexg  4846  fabexg  5532  mapex  6866  pmvalg  6871  fopwdom  7065  ssenen  7080  restid2  13394  toponsspwpwg  14816  tgdom  14866  distop  14879  epttop  14884  cldval  14893  ntrfval  14894  clsfval  14895  neifval  14934  neif  14935  neival  14937