Theorem con3rr3 128

Description: Rotate through consequent right. (Contributed by Wolf Lammen, 3-Nov-2013.)

Hypothesis

Ref	Expression
con3rr3.1	|- (ph -> (ps -> ch))

Assertion

Ref	Expression
con3rr3	|- (-. ch -> (ph -> -. ps))

Proof of Theorem con3rr3

Step	Hyp	Ref	Expression
1		con3rr3.1	. . 3 |- (ph -> (ps -> ch))
2	1	con3d 125	. 2 |- (ph -> (-. ch -> -. ps))
3	2	com12 27	1 |- (-. ch -> (ph -> -. ps))

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:  impi  140  ax12b  1689  equs5e  1888  ax12  1935  ax10lem2  1937  sbn  2062  ax12from12o  2156  mo2icl  3016