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Theorem pm3.4 544
Description: Conjunction implies implication. Theorem *3.4 of [WhiteheadRussell] p. 113. (Contributed by NM, 31-Jul-1995.)
Assertion
Ref Expression
pm3.4  |-  ( (
ph  /\  ps )  ->  ( ph  ->  ps ) )

Proof of Theorem pm3.4
StepHypRef Expression
1 simpr 447 . 2  |-  ( (
ph  /\  ps )  ->  ps )
21a1d 22 1  |-  ( (
ph  /\  ps )  ->  ( ph  ->  ps ) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 358
This theorem is referenced by:  sbequ1  1861  afvres  27425
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
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