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Theorem ecidg 6501
Description: A set is equal to its converse epsilon coset. (Note: converse epsilon is not an equivalence relation.) (Contributed by Jim Kingdon, 8-Jan-2020.)
Assertion
Ref Expression
ecidg  |-  ( A  e.  V  ->  [ A ] `'  _E  =  A )

Proof of Theorem ecidg
Dummy variable  y is distinct from all other variables.
StepHypRef Expression
1 vex 2692 . . . 4  |-  y  e. 
_V
2 elecg 6475 . . . 4  |-  ( ( y  e.  _V  /\  A  e.  V )  ->  ( y  e.  [ A ] `'  _E  <->  A `'  _E  y ) )
31, 2mpan 421 . . 3  |-  ( A  e.  V  ->  (
y  e.  [ A ] `'  _E  <->  A `'  _E  y ) )
4 brcnvg 4728 . . . 4  |-  ( ( A  e.  V  /\  y  e.  _V )  ->  ( A `'  _E  y 
<->  y  _E  A ) )
51, 4mpan2 422 . . 3  |-  ( A  e.  V  ->  ( A `'  _E  y  <->  y  _E  A ) )
6 epelg 4220 . . 3  |-  ( A  e.  V  ->  (
y  _E  A  <->  y  e.  A ) )
73, 5, 63bitrd 213 . 2  |-  ( A  e.  V  ->  (
y  e.  [ A ] `'  _E  <->  y  e.  A ) )
87eqrdv 2138 1  |-  ( A  e.  V  ->  [ A ] `'  _E  =  A )
Colors of variables: wff set class
Syntax hints:    -> wi 4    <-> wb 104    = wceq 1332    e. wcel 1481   _Vcvv 2689   class class class wbr 3937    _E cep 4217   `'ccnv 4546   [cec 6435
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-io 699  ax-5 1424  ax-7 1425  ax-gen 1426  ax-ie1 1470  ax-ie2 1471  ax-8 1483  ax-10 1484  ax-11 1485  ax-i12 1486  ax-bndl 1487  ax-4 1488  ax-14 1493  ax-17 1507  ax-i9 1511  ax-ial 1515  ax-i5r 1516  ax-ext 2122  ax-sep 4054  ax-pow 4106  ax-pr 4139
This theorem depends on definitions:  df-bi 116  df-3an 965  df-tru 1335  df-nf 1438  df-sb 1737  df-eu 2003  df-mo 2004  df-clab 2127  df-cleq 2133  df-clel 2136  df-nfc 2271  df-ral 2422  df-rex 2423  df-v 2691  df-sbc 2914  df-un 3080  df-in 3082  df-ss 3089  df-pw 3517  df-sn 3538  df-pr 3539  df-op 3541  df-br 3938  df-opab 3998  df-eprel 4219  df-xp 4553  df-cnv 4555  df-dm 4557  df-rn 4558  df-res 4559  df-ima 4560  df-ec 6439
This theorem is referenced by:  addcnsrec  7674  mulcnsrec  7675
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