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Theorem simp3ll 1010
Description: Simplification of conjunction. (Contributed by NM, 9-Mar-2012.)
Assertion
Ref Expression
simp3ll  |-  ( ( th  /\  ta  /\  ( ( ph  /\  ps )  /\  ch )
)  ->  ph )

Proof of Theorem simp3ll
StepHypRef Expression
1 simpll 496 . 2  |-  ( ( ( ph  /\  ps )  /\  ch )  ->  ph )
213ad2ant3 962 1  |-  ( ( th  /\  ta  /\  ( ( ph  /\  ps )  /\  ch )
)  ->  ph )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 102    /\ w3a 920
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 104  ax-ia2 105  ax-ia3 106
This theorem depends on definitions:  df-bi 115  df-3an 922
This theorem is referenced by:  f1oiso2  5497  prarloc  6755
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