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Theorem an12s 507
Description: Swap two conjuncts in antecedent. The label suffix "s" means that an12 503 is combined with syl 14 (or a variant). (Contributed by NM, 13-Mar-1996.)
Hypothesis
Ref Expression
an12s.1  |-  ( (
ph  /\  ( ps  /\ 
ch ) )  ->  th )
Assertion
Ref Expression
an12s  |-  ( ( ps  /\  ( ph  /\ 
ch ) )  ->  th )

Proof of Theorem an12s
StepHypRef Expression
1 an12 503 . 2  |-  ( ( ps  /\  ( ph  /\ 
ch ) )  <->  ( ph  /\  ( ps  /\  ch ) ) )
2 an12s.1 . 2  |-  ( (
ph  /\  ( ps  /\ 
ch ) )  ->  th )
31, 2sylbi 118 1  |-  ( ( ps  /\  ( ph  /\ 
ch ) )  ->  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:  anabsan2  526  1stconst  5870  2ndconst  5871  iccshftr  8963  iccshftl  8965  iccdil  8967  icccntr  8969  ndvdsadd  10243
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