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Theorem inex1g 4269
Description: Closed-form, generalized Separation Scheme. (Contributed by NM, 7-Apr-1995.)
Assertion
Ref Expression
inex1g  |-  ( A  e.  V  ->  ( A  i^i  B )  e. 
_V )

Proof of Theorem inex1g
Dummy variable  x is distinct from all other variables.
StepHypRef Expression
1 ineq1 3425 . . 3  |-  ( x  =  A  ->  (
x  i^i  B )  =  ( A  i^i  B ) )
21eleq1d 2307 . 2  |-  ( x  =  A  ->  (
( x  i^i  B
)  e.  _V  <->  ( A  i^i  B )  e.  _V ) )
3 vex 2824 . . 3  |-  x  e. 
_V
43inex1 4267 . 2  |-  ( x  i^i  B )  e. 
_V
52, 4vtoclg 2883 1  |-  ( A  e.  V  ->  ( A  i^i  B )  e. 
_V )
Colors of variables:    wff set class
This proof depends on syntax axioms:    -> wi 4    = wceq 1402    e. wcel 2209   _Vcvv 2821    i^i cin 3219
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-ext 2220  ax-sep 4249
This proof depends on definitions:  df-bi 117  df-tru 1405  df-nf 1514  df-sb 1816  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-v 2823  df-in 3226
This theorem is used by:  onin  4531  dmresexg  5086  funimaexg  5465  offval  6310  offval3  6367  ssenen  7152  hashfibclem  11298  ressvalsets  13470  ressex  13471  ressbasd  13474  resseqnbasd  13480  ressinbasd  13481  ressressg  13482  qusin  13700  mgpress  14314  isunitd  14497  isrhm  14549  rhmfn  14563  rhmval  14564  2idlval  14923  2idlvalg  14924  eltg  15244  eltg3  15249  ntrval  15302  restco  15366  wlk1walkdom  16766
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