Theorem pwexg 4268

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 3653	. . 3 |- ( x = A -> ~P x = ~P A )
2	1	eleq1d 2298	. 2 |- ( x = A -> ( ~P x e. _V <-> ~P A e. _V ) )
3		vpwex 4267	. 2 |- ~P x e. _V
4	2, 3	vtoclg 2862	1 |- ( A e. V -> ~P A e. _V )

Syntax hints:   -> wi 4   = wceq 1395   e. wcel 2200   _Vcvv 2800   ~Pcpw 3650

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-14 2203  ax-ext 2211  ax-sep 4205  ax-pow 4262

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 2802  df-in 3204  df-ss 3211  df-pw 3652

This theorem is referenced by:  pwexd  4269  abssexg  4270  pwex  4271  snexg  4272  pwel  4308  uniexb  4568  xpexg  4838  fabexg  5521  mapex  6818  pmvalg  6823  fopwdom  7017  ssenen  7032  restid2  13321  toponsspwpwg  14736  tgdom  14786  distop  14799  epttop  14804  cldval  14813  ntrfval  14814  clsfval  14815  neifval  14854  neif  14855  neival  14857