Theorem an3lr | index | src |

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

Axiom use

axs_prop_calc (ax_1, ax_2, ax_3, ax_mp)