Theorem pm3.41 327

Description: Theorem *3.41 of [WhiteheadRussell] p. 113.

Assertion

Ref	Expression
pm3.41	|- ((ph -> ch) -> ((ph /\ ps) -> ch))

Proof of Theorem pm3.41

Step	Hyp	Ref	Expression
1		pm3.26 319	. 2 |- ((ph /\ ps) -> ph)
2	1	imim1i 16	1 |- ((ph -> ch) -> ((ph /\ ps) -> ch))

Syntax hints:   -> wi 3   /\ wa 223

This theorem is referenced by:  ivthlem6 7229  ivthlem6OLD 7238

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-an 225

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