Theorem pm4.76 598

Description: Theorem *4.76 of [WhiteheadRussell] p. 121.

Assertion

Ref	Expression
pm4.76	|- (((ph -> ps) /\ (ph -> ch)) <-> (ph -> (ps /\ ch)))

Proof of Theorem pm4.76

Step	Hyp	Ref	Expression
1		jcab 597	. 2 |- ((ph -> (ps /\ ch)) <-> ((ph -> ps) /\ (ph -> ch)))
2	1	bicomi 172	1 |- (((ph -> ps) /\ (ph -> ch)) <-> (ph -> (ps /\ ch)))

Syntax hints:   -> wi 3   <-> wb 146   /\ wa 223

This theorem is referenced by:  reldisj 2309  asymref2 3432  fun11 3554  axgroth4 8719

This theorem was proved from axioms:  ax-1 4  ax-2 5  ax-3 6  ax-mp 7

This theorem depends on definitions:  df-bi 147  df-or 224  df-an 225

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