Theorem pm2.24ii 642

Description: A contradiction implies anything. Inference from pm2.24 616. (Contributed by NM, 27-Feb-2008.)

Hypotheses

Ref	Expression
pm2.24ii.1	⊢ 𝜑
pm2.24ii.2	⊢ ¬ 𝜑

Assertion

Ref	Expression
pm2.24ii	⊢ 𝜓

Proof of Theorem pm2.24ii

Step	Hyp	Ref	Expression
1		pm2.24ii.1	. 2 ⊢ 𝜑
2		pm2.24ii.2	. . 3 ⊢ ¬ 𝜑
3	2	pm2.21i 641	. 2 ⊢ (𝜑 → 𝜓)
4	1, 3	ax-mp 5	1 ⊢ 𝜓

Syntax hints:  ¬ wn 3

This theorem was proved from axioms:  ax-mp 5  ax-in2 610

This theorem is referenced by: (None)