Theorem coeq1 ≪ | index | src | ≫

theorem coeq1 (_F1 _F2 G: set): $ _F1 == _F2 -> _F1 o> G == _F2 o> G $;

Step	Hyp	Ref	Expression
1		id	_F1 == _F2 -> _F1 == _F2
2	1	coeq1d	_F1 == _F2 -> _F1 o> G == _F2 o> G

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_set (elab, ax_8)