Theorem anll ≪ | index | src | ≫

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

Step	Hyp	Ref	Expression
1		anl	a /\ b -> a
2	1	anwl	a /\ b /\ c -> a

Axiom use

axs_prop_calc (ax_1, ax_2, ax_3, ax_mp)