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Theorem pm4.38 842
Description: Theorem *4.38 of [WhiteheadRussell] p. 118. (Contributed by NM, 3-Jan-2005.)
Assertion
Ref Expression
pm4.38

Proof of Theorem pm4.38
StepHypRef Expression
1 simpl 443 . 2
2 simpr 447 . 2
31, 2anbi12d 691 1
Colors of variables: wff setvar class
Syntax hints:   wi 4   wb 176   wa 358
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8
This theorem depends on definitions:  df-bi 177  df-an 360
This theorem is referenced by: (None)
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