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Theorem simp-4l 531
Description: Simplification of a conjunction. (Contributed by Mario Carneiro, 4-Jan-2017.)
Assertion
Ref Expression
simp-4l  |-  ( ( ( ( ( ph  /\ 
ps )  /\  ch )  /\  th )  /\  ta )  ->  ph )

Proof of Theorem simp-4l
StepHypRef Expression
1 simplll 523 . 2  |-  ( ( ( ( ph  /\  ps )  /\  ch )  /\  th )  ->  ph )
21adantr 274 1  |-  ( ( ( ( ( ph  /\ 
ps )  /\  ch )  /\  th )  /\  ta )  ->  ph )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 103
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 is referenced by:  simp-5l  533  disjiun  3960  fnfi  6881  nninfisol  7076  sumeq2  11256  zsumdc  11281  modfsummod  11355  prodeq2  11454  zproddc  11476  cncnp  12630  fsumcncntop  12956  logbgcd1irrap  13287
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