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Theorem sbceq2a 3339
Description: Equality theorem for class substitution. Class version of sbequ12r 1993. (Contributed by NM, 4-Jan-2017.)
Assertion
Ref Expression
sbceq2a

Proof of Theorem sbceq2a
StepHypRef Expression
1 sbceq1a 3338 . . 3
21eqcoms 2469 . 2
32bicomd 201 1
Colors of variables: wff setvar class
Syntax hints:  ->wi 4  <->wb 184  =wceq 1395  [.wsbc 3327
This theorem is referenced by:  tfindes  6697  rabssnn0fi  12095  indexa  30224  fdc  30238  fdc1  30239  alrimii  30524  tratrbVD  33661
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1618  ax-4 1631  ax-5 1704  ax-6 1747  ax-7 1790  ax-12 1854  ax-ext 2435
This theorem depends on definitions:  df-bi 185  df-an 371  df-ex 1613  df-sb 1740  df-clab 2443  df-cleq 2449  df-clel 2452  df-sbc 3328
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