Theorem eqtr3d ≪ | index | src | ≫

theorem eqtr3d (G: wff) (a b c: nat):
  $ G -> b = a $ >
  $ G -> b = c $ >
  $ G -> a = c $;

Step	Hyp	Ref	Expression
1		eqtr3	b = a -> b = c -> a = c
2		hyp h1	G -> b = a
3		hyp h2	G -> b = c
4	1, 2, 3	sylc	G -> a = c

Axiom use

axs_prop_calc (ax_1, ax_2, ax_mp), axs_pred_calc (ax_7)