Theorem wl-impchain-a1-1 33283

Description: Inference rule, a copy of a1i 11. Head start of a recursive proof pattern. (Contributed by Wolf Lammen, 20-Jun-2020.) (New usage is discouraged.) (Proof modification is discouraged.)

Hypothesis

Ref	Expression
wl-impchain-a1-1.a	|- ph

Assertion

Ref	Expression
wl-impchain-a1-1	|- ( ps -> ph )

Proof of Theorem wl-impchain-a1-1

Step	Hyp	Ref	Expression
1		wl-impchain-a1-1.a	. 2 |- ph
2	1	wl-a1i 33251	1 |- ( ps -> ph )

Syntax hints:   -> wi 4

This theorem was proved from axioms:  ax-mp 5  ax-luk1 33241  ax-luk2 33242  ax-luk3 33243

This theorem is referenced by:  wl-impchain-a1-2  33284