Theorem pwexg 4264

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 3652	. . 3 |- ( x = A -> ~P x = ~P A )
2	1	eleq1d 2298	. 2 |- ( x = A -> ( ~P x e. _V <-> ~P A e. _V ) )
3		vpwex 4263	. 2 |- ~P x e. _V
4	2, 3	vtoclg 2861	1 |- ( A e. V -> ~P A e. _V )

Syntax hints:   -> wi 4   = wceq 1395   e. wcel 2200   _Vcvv 2799   ~Pcpw 3649

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 4202  ax-pow 4258

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 2801  df-in 3203  df-ss 3210  df-pw 3651

This theorem is referenced by:  pwexd  4265  abssexg  4266  pwex  4267  snexg  4268  pwel  4304  uniexb  4564  xpexg  4833  fabexg  5515  mapex  6809  pmvalg  6814  fopwdom  7005  ssenen  7020  restid2  13296  toponsspwpwg  14711  tgdom  14761  distop  14774  epttop  14779  cldval  14788  ntrfval  14789  clsfval  14790  neifval  14829  neif  14830  neival  14832