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Theorem epel 4437
Description: The epsilon relation and the membership relation are the same. (Contributed by NM, 13-Aug-1995.)
Assertion
Ref Expression
epel  |-  ( x  _E  y  <->  x  e.  y )

Proof of Theorem epel
StepHypRef Expression
1 vex 2824 . 2  |-  y  e. 
_V
21epelc 4436 1  |-  ( x  _E  y  <->  x  e.  y )
Colors of variables:    wff set class
This proof depends on syntax axioms:    <-> wb 105   class class class wbr 4130    _E cep 4432
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-14 2212  ax-ext 2220  ax-sep 4249  ax-pow 4311  ax-pr 4346
This proof depends on definitions:  df-bi 117  df-3an 1011  df-tru 1405  df-nf 1514  df-sb 1816  df-eu 2089  df-mo 2090  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-v 2823  df-un 3224  df-in 3226  df-ss 3233  df-pw 3690  df-sn 3715  df-pr 3716  df-op 3718  df-br 4131  df-opab 4193  df-eprel 4434
This theorem is used by:  epse  4487  wetrep  4505  ordsoexmid  4709  zfregfr  4721  ordwe  4723  wessep  4725  reg3exmidlemwe  4726  smoiso  6573  nnwetri  7223  ordiso2  7375  frec2uzisod  10844  nnti  17022
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