Theorem jctl 307

Description: Inference conjoining a theorem to the left of a consequent. (Contributed by NM, 31-Dec-1993.) (Proof shortened by Wolf Lammen, 24-Oct-2012.)

Hypothesis

Ref	Expression
jctl.1	|- ps

Assertion

Ref	Expression
jctl	|- ( ph -> ( ps /\ ph ) )

Proof of Theorem jctl

Step	Hyp	Ref	Expression
1		id 19	. 2 |- ( ph -> ph )
2		jctl.1	. 2 |- ps
3	1, 2	jctil 305	1 |- ( ph -> ( ps /\ ph ) )

Syntax hints:   -> wi 4   /\ wa 102

This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia3 106

This theorem is referenced by:  mpanl1  424  mpanlr1  430  reg2exmidlema  4277  relop  4504  nn0n0n1ge2  8418  expge1  9513  4dvdseven  10317  ndvdsp1  10332