(************************************************************************) (* v * The Coq Proof Assistant / The Coq Development Team *) (* b) eqb. split; simpl. destruct n; destruct m; reflexivity. destruct n; destruct m; destruct p; reflexivity. destruct n; destruct m; reflexivity. destruct n; destruct m; destruct p; reflexivity. destruct n; reflexivity. destruct n; reflexivity. destruct n; reflexivity. destruct n; destruct m; destruct p; reflexivity. destruct x; destruct y; reflexivity || simpl; tauto. Defined. Add Legacy Ring bool xorb andb true false (fun b:bool => b) eqb BoolTheory [ true false ].