Theorem imidm ≪ | index | src | ≫

theorem imidm (a b: wff): $ (a -> a -> b) -> a -> b $;

Step	Hyp	Ref	Expression
1		mpcom	a -> (a -> b) -> b
2	1	a2i	(a -> a -> b) -> a -> b

Axiom use

axs_prop_calc (ax_1, ax_2, ax_mp)