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(*         *   The Coq Proof Assistant / The Coq Development Team       *)
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(*    //   *    This file is distributed under the terms of the         *)
(*         *     GNU Lesser General Public License Version 2.1          *)
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Local Open Scope Z_scope.
Local Open Scope R_scope.

Lemma le_minusni_n : forall n i:nat, (i <= n)%nat -> (n - i <= n)%nat.