Theorem an6lr | index | src |

theorem an6lr (a b c d e f g h: wff):
  $ a /\ b /\ c /\ d /\ e /\ f /\ g /\ h -> b $;
StepHypRefExpression
1 an5lr
a /\ b /\ c /\ d /\ e /\ f /\ g -> b
2 1 anwl
a /\ b /\ c /\ d /\ e /\ f /\ g /\ h -> b

Axiom use

axs_prop_calc (ax_1, ax_2, ax_3, ax_mp)