Theorem ltle ≪ | index | src | ≫

theorem ltle (a b: nat): $ a < b -> a <= b $;

Step	Hyp	Ref	Expression
1		lesucid	a <= suc a
2	1	a1i	a < b -> a <= suc a
3		id	a < b -> a < b
4	3	conv lt	a < b -> suc a <= b
5	2, 4	letrd	a < b -> a <= b

Axiom use

axs_prop_calc (ax_1, ax_2, ax_3, ax_mp, itru), axs_pred_calc (ax_gen, ax_4, ax_5, ax_6, ax_7, ax_10, ax_11, ax_12), axs_peano (peano2, peano5, addeq, add0, addS)