Theorem an4lr | index | src |

theorem an4lr (a b c d e f: wff): $ a /\ b /\ c /\ d /\ e /\ f -> b $;
StepHypRefExpression
1 an3lr
a /\ b /\ c /\ d /\ e -> b
2 1 anwl
a /\ b /\ c /\ d /\ e /\ f -> b

Axiom use

axs_prop_calc (ax_1, ax_2, ax_3, ax_mp)