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Theorem bnj836 29203
Description:  /\-manipulation. (Contributed by Jonathan Ben-Naim, 3-Jun-2011.) (New usage is discouraged.)
Hypotheses
Ref Expression
bnj836.1  |-  ( et  <->  (
ph  /\  ps  /\  ch ) )
bnj836.2  |-  ( ps 
->  ta )
Assertion
Ref Expression
bnj836  |-  ( et 
->  ta )

Proof of Theorem bnj836
StepHypRef Expression
1 bnj836.1 . 2  |-  ( et  <->  (
ph  /\  ps  /\  ch ) )
2 bnj836.2 . . 3  |-  ( ps 
->  ta )
323ad2ant2 980 . 2  |-  ( (
ph  /\  ps  /\  ch )  ->  ta )
41, 3sylbi 189 1  |-  ( et 
->  ta )
Colors of variables: wff set class
Syntax hints:    -> wi 4    <-> wb 178    /\ w3a 937
This theorem is referenced by:  bnj1379  29276  bnj1175  29447  bnj1286  29462  bnj1450  29493  bnj1501  29510  bnj1523  29514
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8
This theorem depends on definitions:  df-bi 179  df-an 362  df-3an 939
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