Theorem com45 11325

Description: Commutation of antecedents. Swap 4th and 5th.

Hypothesis

Ref	Expression
com5.1	|- (ph -> (ps -> (ch -> (th -> (ta -> et)))))

Assertion

Ref	Expression
com45	|- (ph -> (ps -> (ch -> (ta -> (th -> et)))))

Proof of Theorem com45

Step	Hyp	Ref	Expression
1		com5.1	. 2 |- (ph -> (ps -> (ch -> (th -> (ta -> et)))))
2		pm2.04 30	. 2 |- ((th -> (ta -> et)) -> (ta -> (th -> et)))
3	1, 2	syl8 24	1 |- (ph -> (ps -> (ch -> (ta -> (th -> et)))))

Syntax hints:   -> wi 3

This theorem is referenced by:  com35 11326  com25 11327  com15 11328  com5l 11329  flimfnfcls 11727  fcluscnplem 11729

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

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