Theorem pimex2 ≪ | index | src | ≫

theorem pimex2 {x: nat} (p q: wff x): $ (P. x p -> q) -> E. x q $;

Step	Hyp	Ref	Expression
1		exim	A. x (p -> q) -> E. x p -> E. x q
2	1	impcom	E. x p /\ A. x (p -> q) -> E. x q
3	2	conv pim	(P. x p -> q) -> E. x q

Axiom use

axs_prop_calc (ax_1, ax_2, ax_3, ax_mp), axs_pred_calc (ax_gen, ax_4)