Theorem syldbl2

Description: Stacked hypotheseis implies goal. (Contributed by Stanislas Polu, 9-Mar-2020)

	Ref	Expression
Hypothesis	syldbl2.1	|- ( ( ph /\ ps ) -> ( ps -> th ) )
Assertion	syldbl2	|- ( ( ph /\ ps ) -> th )

Proof

Step	Hyp	Ref	Expression
1		syldbl2.1	|- ( ( ph /\ ps ) -> ( ps -> th ) )
2	1	com12	|- ( ps -> ( ( ph /\ ps ) -> th ) )
3	2	anabsi7	|- ( ( ph /\ ps ) -> th )