Theorem pm2.24ii

Description: A contradiction implies anything. Inference associated with pm2.21i and pm2.24i . (Contributed by NM, 27-Feb-2008)

	Ref	Expression
Hypotheses	pm2.24ii.1	|- ph
	pm2.24ii.2	|- -. ph
Assertion	pm2.24ii	|- ps

Proof

Step	Hyp	Ref	Expression
1		pm2.24ii.1	|- ph
2		pm2.24ii.2	|- -. ph
3	2	pm2.21i	|- ( ph -> ps )
4	1 3	ax-mp	|- ps