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Theorem simp12l 1028
Description: Simplification of conjunction. (Contributed by NM, 9-Mar-2012.)
Assertion
Ref Expression
simp12l  |-  ( ( ( ch  /\  ( ph  /\  ps )  /\  th )  /\  ta  /\  et )  ->  ph )

Proof of Theorem simp12l
StepHypRef Expression
1 simp2l 941 . 2  |-  ( ( ch  /\  ( ph  /\ 
ps )  /\  th )  ->  ph )
213ad2ant1 936 1  |-  ( ( ( ch  /\  ( ph  /\  ps )  /\  th )  /\  ta  /\  et )  ->  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: (None)
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