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Theorem ecqs 6742
Description: Equivalence class in terms of quotient set. (Contributed by NM, 29-Jan-1999.)
Hypothesis
Ref Expression
ecqs.1  |-  R  e. 
_V
Assertion
Ref Expression
ecqs  |-  [ A ] R  =  U. ( { A } /. R )

Proof of Theorem ecqs
StepHypRef Expression
1 df-ec 6680 . 2  |-  [ A ] R  =  ( R " { A }
)
2 ecqs.1 . . 3  |-  R  e. 
_V
3 uniqs 6738 . . 3  |-  ( R  e.  _V  ->  U. ( { A } /. R
)  =  ( R
" { A }
) )
42, 3ax-mp 5 . 2  |-  U. ( { A } /. R
)  =  ( R
" { A }
)
51, 4eqtr4i 2253 1  |-  [ A ] R  =  U. ( { A } /. R )
Colors of variables: wff set class
Syntax hints:    = wceq 1395    e. wcel 2200   _Vcvv 2799   {csn 3666   U.cuni 3887   "cima 4721   [cec 6676   /.cqs 6677
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-13 2202  ax-14 2203  ax-ext 2211  ax-sep 4201  ax-pow 4257  ax-pr 4292  ax-un 4523
This theorem depends on definitions:  df-bi 117  df-3an 1004  df-tru 1398  df-nf 1507  df-sb 1809  df-eu 2080  df-mo 2081  df-clab 2216  df-cleq 2222  df-clel 2225  df-nfc 2361  df-ral 2513  df-rex 2514  df-v 2801  df-un 3201  df-in 3203  df-ss 3210  df-pw 3651  df-sn 3672  df-pr 3673  df-op 3675  df-uni 3888  df-iun 3966  df-br 4083  df-opab 4145  df-xp 4724  df-cnv 4726  df-dm 4728  df-rn 4729  df-res 4730  df-ima 4731  df-ec 6680  df-qs 6684
This theorem is referenced by: (None)
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