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Theorem bj-pm2.18i 30962
Description: Inference associated with pm2.18 113. (Contributed by BJ, 30-Mar-2020.)
Hypothesis
Ref Expression
bj-pm2.18i.1  |-  ( -. 
ph  ->  ph )
Assertion
Ref Expression
bj-pm2.18i  |-  ph

Proof of Theorem bj-pm2.18i
StepHypRef Expression
1 bj-pm2.18i.1 . 2  |-  ( -. 
ph  ->  ph )
2 pm2.18 113 . 2  |-  ( ( -.  ph  ->  ph )  ->  ph )
31, 2ax-mp 5 1  |-  ph
Colors of variables: wff setvar class
Syntax hints:   -. wn 3    -> wi 4
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8
This theorem is referenced by: (None)
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