Theorem jctir 524

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

Hypotheses

Ref	Expression
jctil.1	|- (ph -> ps)
jctil.2	|- ch

Assertion

Ref	Expression
jctir	|- (ph -> (ps /\ ch))

Proof of Theorem jctir

Step	Hyp	Ref	Expression
1		jctil.1	. 2 |- (ph -> ps)
2		jctil.2	. . 3 |- ch
3	2	a1i 10	. 2 |- (ph -> ch)
4	1, 3	jca 518	1 |- (ph -> (ps /\ ch))

Syntax hints:   -> wi 4   /\ wa 358

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8

This theorem depends on definitions:  df-bi 177  df-an 360

This theorem is referenced by:  jctr  526  equvini  1987  uniintsn  3964  ltfinp1  4463  vfinspeqtncv  4554  foimacnv  5304  respreima  5411  fpr  5438  spacssnc  6285