Commit 185b87df authored by MARCHE Claude's avatar MARCHE Claude

fix realization of number.Parity

parent 5ebaf514
......@@ -123,3 +123,14 @@ intros k.
now exists k.
(* Why3 goal *)
Lemma even_mod2 : forall (n:Z), (even n) <->
((ZArith.BinInt.Z.rem n 2%Z) = 0%Z).
intros n.
rewrite even_is_Zeven.
rewrite <- Zeven_bool_iff.
rewrite Zquot.Zeven_rem.
now rewrite Z.eqb_eq.
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