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Theorem pm2.38 842
Description: Theorem *2.38 of [WhiteheadRussell] p. 105. (Contributed by NM, 6-Mar-2008.)
Assertion
Ref Expression
pm2.38

Proof of Theorem pm2.38
StepHypRef Expression
1 id 22 . 2
21orim1d 839 1
Colors of variables: wff setvar class
Syntax hints:  ->wi 4  \/wo 368
This theorem is referenced by:  pm2.36  843  pm2.37  844
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8
This theorem depends on definitions:  df-bi 185  df-or 370  df-an 371
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