Theorem mpand ≪ | index | src | ≫

theorem mpand (a b c: wff): $ a -> b $ > $ a /\ b -> c $ > $ a -> c $;

Step	Hyp	Ref	Expression
1		hyp h1	a -> b
2		hyp h2	a /\ b -> c
3	2	exp	a -> b -> c
4	1, 3	mpd	a -> c

Axiom use

axs_prop_calc (ax_1, ax_2, ax_3, ax_mp)