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Theorem ee22 1372
Description: Virtual deduction rule e22 28834 without virtual deduction connectives. Special theorem needed for Alan Sare's virtual deduction translation tool. (Contributed by Alan Sare, 2-May-2011.) (New usage is discouraged.) TODO: decide if this is worth keeping.
Hypotheses
Ref Expression
ee22.1  |-  ( ph  ->  ( ps  ->  ch ) )
ee22.2  |-  ( ph  ->  ( ps  ->  th )
)
ee22.3  |-  ( ch 
->  ( th  ->  ta ) )
Assertion
Ref Expression
ee22  |-  ( ph  ->  ( ps  ->  ta ) )

Proof of Theorem ee22
StepHypRef Expression
1 ee22.1 . 2  |-  ( ph  ->  ( ps  ->  ch ) )
2 ee22.2 . 2  |-  ( ph  ->  ( ps  ->  th )
)
3 ee22.3 . 2  |-  ( ch 
->  ( th  ->  ta ) )
41, 2, 3syl6c 63 1  |-  ( ph  ->  ( ps  ->  ta ) )
Colors of variables: wff set class
Syntax hints:    -> wi 4
This theorem is referenced by:  ee21  1385  ee33  28667  sb5ALT  28671  tratrb  28682  onfrALT  28697  a9e2ndeq  28708  ee22an  28836  sspwtrALT  28997  sspwtrALT2  28998  trintALT  29055
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 8
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