Theorem mpanl2OLD 772

Description: An inference based on modus ponens.

Hypotheses

Ref	Expression
mpanl2.1	|- ps
mpanl2.2	|- (((ph /\ ps) /\ ch) -> th)

Assertion

Ref	Expression
mpanl2OLD	|- ((ph /\ ch) -> th)

Proof of Theorem mpanl2OLD

Step	Hyp	Ref	Expression
1		mpanl2.1	. . 3 |- ps
2		mpanl2.2	. . . 4 |- (((ph /\ ps) /\ ch) -> th)
3	2	ex 402	. . 3 |- ((ph /\ ps) -> (ch -> th))
4	1, 3	mpan2 760	. 2 |- (ph -> (ch -> th))
5	4	imp 377	1 |- ((ph /\ ch) -> th)

Syntax hints:   -> wi 3   /\ wa 240

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

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