Theorem bnj641 12576

Description: /\-manipulation.

Assertion

Ref	Expression
bnj641	|- ((ph /\ ps /\ ch) -> (ch /\ ps /\ ph))

Proof of Theorem bnj641

Step	Hyp	Ref	Expression
1		3anrev 868	. 2 |- ((ph /\ ps /\ ch) <-> (ch /\ ps /\ ph))
2	1	biimpi 168	1 |- ((ph /\ ps /\ ch) -> (ch /\ ps /\ ph))

Syntax hints:   -> wi 3   /\ w3a 858

This theorem was proved from axioms:  ax-1 4  ax-2 5  ax-3 6  ax-mp 7

This theorem depends on definitions:  df-bi 164  df-an 242  df-3an 860

Copyright terms: Public domain