Theorem bi2a ≪ | index | src | ≫

theorem bi2a (a b c: wff): $ a -> (b <-> c) $ > $ a /\ c -> b $;

Step	Hyp	Ref	Expression
1		hyp h	a -> (b <-> c)
2	1	bi2d	a -> c -> b
3	2	imp	a /\ c -> b

Axiom use

axs_prop_calc (ax_1, ax_2, ax_3, ax_mp)