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Theorem reximi 2647
Description: Inference quantifying both antecedent and consequent. (Contributed by NM, 18-Oct-1996.)
Hypothesis
Ref Expression
reximi.1  |-  ( ph  ->  ps )
Assertion
Ref Expression
reximi  |-  ( E. x  e.  A  ph  ->  E. x  e.  A  ps )

Proof of Theorem reximi
StepHypRef Expression
1 reximi.1 . . 3  |-  ( ph  ->  ps )
21a1i 9 . 2  |-  ( x  e.  A  ->  ( ph  ->  ps ) )
32reximia 2645 1  |-  ( E. x  e.  A  ph  ->  E. x  e.  A  ps )
Colors of variables:    wff set class
This proof depends on syntax axioms:    -> wi 4    e. wcel 2209   E.wrex 2529
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-5 1500  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-4 1563  ax-ial 1587
This proof depends on definitions:  df-bi 117  df-ral 2533  df-rex 2534
This theorem is used by:  rexanaliim  2656  r19.29d2r  2695  r19.35-1  2701  r19.40  2705  reu3  3016  ssiun  4054  iinss  4064  elunirn  5972  tfrcllemssrecs  6623  nnawordex  6802  iinerm  6881  erovlem  6901  xpf1o  7144  fidcenumlemim  7269  omniwomnimkv  7507  genprndl  7888  genprndu  7889  appdiv0nq  7931  ltexprlemm  7967  recexsrlem  8141  rereceu  8256  recexre  8908  aprcl  8976  rexanre  12001  climi2  12070  climi0  12071  climcaucn  12133  prodmodclem2  12360  prodmodc  12361  gcdsupex  12750  gcdsupcl  12751  bezoutlemeu  12800  dfgcd3  12803  isnsgrp  13770  rhmdvdsr  14531  eltg2b  15204  lmcvg  15367  cnptoprest  15389  lmtopcnp  15400  txbas  15408  metrest  15656  elply2  15885  2sqlem7  16338  umgr2edg1  16548  umgr2edgneu  16551  bj-charfunbi  16935  bj-findis  17103
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