Theorem addb00 ≪ | index | src | ≫

theorem addb00 (a b: nat): $ b0 a + b0 b = b0 (a + b) $;

Step	Hyp	Ref	Expression
1		add4	a + a + (b + b) = a + b + (a + b)
2	1	conv b0	b0 a + b0 b = b0 (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)