Theorem pimex ≪ | index | src | ≫

theorem pimex {x: nat} (p q: wff x): $ (P. x p -> q) -> E. x p $;

Step	Hyp	Ref	Expression
1		anl	E. x p /\ A. x (p -> q) -> E. x p
2	1	conv pim	(P. x p -> q) -> E. x p

Axiom use

axs_prop_calc (ax_1, ax_2, ax_3, ax_mp)