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Theorem anass1rs 513
Description: Commutative-associative law for conjunction in an antecedent. (Contributed by Jeff Madsen, 19-Jun-2011.)
Hypothesis
Ref Expression
anass1rs.1  |-  ( (
ph  /\  ( ps  /\ 
ch ) )  ->  th )
Assertion
Ref Expression
anass1rs  |-  ( ( ( ph  /\  ch )  /\  ps )  ->  th )

Proof of Theorem anass1rs
StepHypRef Expression
1 anass1rs.1 . . 3  |-  ( (
ph  /\  ( ps  /\ 
ch ) )  ->  th )
21anassrs 386 . 2  |-  ( ( ( ph  /\  ps )  /\  ch )  ->  th )
32an32s 510 1  |-  ( ( ( ph  /\  ch )  /\  ps )  ->  th )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 101
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
This theorem is referenced by:  creui  7988  qreccl  8674
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