Theorem naim2i

Description: Constructor rule for -/\ . (Contributed by Anthony Hart, 2-Sep-2011)

	Ref	Expression
Hypotheses	naim2i.1	|- ( ph -> ps )
	naim2i.2	|- ( ch -/\ ps )
Assertion	naim2i	|- ( ch -/\ ph )

Proof

Step	Hyp	Ref	Expression
1		naim2i.1	|- ( ph -> ps )
2		naim2i.2	|- ( ch -/\ ps )
3		naim2	|- ( ( ph -> ps ) -> ( ( ch -/\ ps ) -> ( ch -/\ ph ) ) )
4	1 2 3	mp2	|- ( ch -/\ ph )