Theorem 3adant3r2 1114

Description: Deduction adding a conjunct to antecedent. (Contributed by NM, 17-Feb-2008.)

Hypothesis

Ref	Expression
3exp.1	|- ( ( ph /\ ps /\ ch ) -> th )

Assertion

Ref	Expression
3adant3r2	|- ( ( ph /\ ( ps /\ ta /\ ch ) ) -> th )

Proof of Theorem 3adant3r2

Step	Hyp	Ref	Expression
1		3exp.1	. . 3 |- ( ( ph /\ ps /\ ch ) -> th )
2	1	3expb 1105	. 2 |- ( ( ph /\ ( ps /\ ch ) ) -> th )
3	2	3adantr2 1064	1 |- ( ( ph /\ ( ps /\ ta /\ ch ) ) -> th )

Syntax hints:   -> wi 4   /\ wa 97   /\ w3a 885

This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 99  ax-ia2 100  ax-ia3 101

This theorem depends on definitions:  df-bi 110  df-3an 887

This theorem is referenced by: (None)