Theorem true_comp ≪ | index | src | ≫

真值合成

theorem true_comp (A: wff): $ A \imp \true $;

Step	Hyp	Ref	Expression
1		introl_imp	\true \imp A \imp \true
2		true_proof	\true
3	1, 2	ax_mp	A \imp \true

Axiom use

Logic (ax_mp, ax_1, ax_2)