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Theorem ercl2 6055
Description: Elementhood in the field of an equivalence relation. (Contributed by Mario Carneiro, 12-Aug-2015.)
Hypotheses
Ref Expression
ersym.1 (φ𝑅 Er 𝑋)
ersym.2 (φA𝑅B)
Assertion
Ref Expression
ercl2 (φB 𝑋)

Proof of Theorem ercl2
StepHypRef Expression
1 ersym.1 . 2 (φ𝑅 Er 𝑋)
2 ersym.2 . . 3 (φA𝑅B)
31, 2ersym 6054 . 2 (φB𝑅A)
41, 3ercl 6053 1 (φB 𝑋)
Colors of variables: wff set class
Syntax hints:  wi 4   wcel 1390   class class class wbr 3755   Er wer 6039
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 99  ax-ia2 100  ax-ia3 101  ax-io 629  ax-5 1333  ax-7 1334  ax-gen 1335  ax-ie1 1379  ax-ie2 1380  ax-8 1392  ax-10 1393  ax-11 1394  ax-i12 1395  ax-bnd 1396  ax-4 1397  ax-14 1402  ax-17 1416  ax-i9 1420  ax-ial 1424  ax-i5r 1425  ax-ext 2019  ax-sep 3866  ax-pow 3918  ax-pr 3935
This theorem depends on definitions:  df-bi 110  df-3an 886  df-tru 1245  df-nf 1347  df-sb 1643  df-eu 1900  df-mo 1901  df-clab 2024  df-cleq 2030  df-clel 2033  df-nfc 2164  df-ral 2305  df-rex 2306  df-v 2553  df-un 2916  df-in 2918  df-ss 2925  df-pw 3353  df-sn 3373  df-pr 3374  df-op 3376  df-br 3756  df-opab 3810  df-xp 4294  df-rel 4295  df-cnv 4296  df-dm 4298  df-er 6042
This theorem is referenced by:  qliftfun  6124  nqnq0pi  6420
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