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Theorem spsbce-2 27547
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 1663 . 2
2 spsbe 1663 . . 3
32eximi 1585 . 2
41, 3syl 16 1
Colors of variables: wff set class
Syntax hints:  ->wi 4  E.wex 1550  [wsb 1658
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8  ax-gen 1555  ax-5 1566
This theorem depends on definitions:  df-bi 178  df-an 361  df-ex 1551  df-sb 1659
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