Theorem bj-con2comi

Description: Inference associated with bj-con2com . Its associated inference is mt2 . TODO: when in the main part, add to mt2 that it is the inference associated with bj-con2comi . (Contributed by BJ, 19-Mar-2020)

	Ref	Expression
Hypothesis	bj-con2comi.1	⊢ 𝜑
Assertion	bj-con2comi	⊢ ( ( 𝜓 → ¬ 𝜑 ) → ¬ 𝜓 )

Proof

Step	Hyp	Ref	Expression
1		bj-con2comi.1	⊢ 𝜑
2		bj-con2com	⊢ ( 𝜑 → ( ( 𝜓 → ¬ 𝜑 ) → ¬ 𝜓 ) )
3	1 2	ax-mp	⊢ ( ( 𝜓 → ¬ 𝜑 ) → ¬ 𝜓 )