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Theorem spsbce-2 27891
Description: Theorem *11.36 in [WhiteheadRussell] p. 162. (Contributed by Andrew Salmon, 24-May-2011.)
Assertion
Ref Expression
spsbce-2

Proof of Theorem spsbce-2
StepHypRef Expression
1 spsbe 1665 . 2
2 spsbe 1665 . . 3
32eximi 1586 . 2
41, 3syl 16 1
Colors of variables: wff set class
Syntax hints:  ->wi 4  E.wex 1551  [wsb 1660
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1556  ax-5 1567
This theorem depends on definitions:  df-bi 179  df-an 362  df-ex 1552  df-sb 1661
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