Theorem jctil

Description: Inference conjoining a theorem to left of consequent in an implication. (Contributed by NM, 31-Dec-1993)

	Ref	Expression
Hypotheses	jctil.1	|- ( ph -> ps )
	jctil.2	|- ch
Assertion	jctil	|- ( ph -> ( ch /\ ps ) )

Proof

Step	Hyp	Ref	Expression
1		jctil.1	|- ( ph -> ps )
2		jctil.2	|- ch
3	2	a1i	|- ( ph -> ch )
4	3 1	jca	|- ( ph -> ( ch /\ ps ) )