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Theorem simp1rl 980
Description: Simplification of conjunction. (Contributed by NM, 9-Mar-2012.)
Assertion
Ref Expression
simp1rl  |-  ( ( ( ch  /\  ( ph  /\  ps ) )  /\  th  /\  ta )  ->  ph )

Proof of Theorem simp1rl
StepHypRef Expression
1 simprl 491 . 2  |-  ( ( ch  /\  ( ph  /\ 
ps ) )  ->  ph )
213ad2ant1 936 1  |-  ( ( ( ch  /\  ( ph  /\  ps ) )  /\  th  /\  ta )  ->  ph )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 101    /\ w3a 896
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 103  ax-ia2 104  ax-ia3 105
This theorem depends on definitions:  df-bi 114  df-3an 898
This theorem is referenced by:  f1imass  5441
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