Theorem an5l ≪ | index | src | ≫

theorem an5l (a b c d e f: wff): $ a /\ b /\ c /\ d /\ e /\ f -> a $;

Step	Hyp	Ref	Expression
1		an4l	a /\ b /\ c /\ d /\ e -> a
2	1	anwl	a /\ b /\ c /\ d /\ e /\ f -> a

Axiom use

axs_prop_calc (ax_1, ax_2, ax_3, ax_mp)