Theorem imim2i | index | src |

theorem imim2i (a b c: wff): $ b -> c $ > $ (a -> b) -> a -> c $;
StepHypRefExpression
1 imim2
(b -> c) -> (a -> b) -> a -> c
2 hyp h
b -> c
3 1, 2 ax_mp
(a -> b) -> a -> c

Axiom use

axs_prop_calc (ax_1, ax_2, ax_mp)