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Theorem simp11 1022
Description: Simplification of doubly triple conjunction. (Contributed by NM, 17-Nov-2011.)
Assertion
Ref Expression
simp11  |-  ( ( ( ph  /\  ps  /\ 
ch )  /\  th  /\  ta )  ->  ph )

Proof of Theorem simp11
StepHypRef Expression
1 simp1 992 . 2  |-  ( (
ph  /\  ps  /\  ch )  ->  ph )
213ad2ant1 1013 1  |-  ( ( ( ph  /\  ps  /\ 
ch )  /\  th  /\  ta )  ->  ph )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ w3a 973
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107
This theorem depends on definitions:  df-bi 116  df-3an 975
This theorem is referenced by:  simpl11  1067  simpr11  1076  simp111  1121  simp211  1130  simp311  1139  frecsuclem  6385  coprimeprodsq  12211  pythagtriplem14  12231  pythagtrip  12237
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