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diff --git a/theories/Arith/MinMax.v b/theories/Arith/MinMax.v
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-(************************************************************************)
-(*  v      *   The Coq Proof Assistant  /  The Coq Development Team     *)
-(* <O___,, * CNRS-Ecole Polytechnique-INRIA Futurs-Universite Paris Sud *)
-(*   \VV/  **************************************************************)
-(*    //   *      This file is distributed under the terms of the       *)
-(*         *       GNU Lesser General Public License Version 2.1        *)
-(************************************************************************)
-
-Require Import Orders NPeano.
-
-(** The Definition of maximum and minimum of two natural numbers
-    is now in NPeano, as well as generic properties. *)
-
-(** * Properties specific to the [nat] domain *)
-
-(** Simplifications *)
-
-Lemma max_0_l : forall n, max 0 n = n.
-Proof. reflexivity. Qed.
-
-Lemma max_0_r : forall n, max n 0 = n.
-Proof. destruct n; auto. Qed.
-
-Lemma min_0_l : forall n, min 0 n = 0.
-Proof. reflexivity. Qed.
-
-Lemma min_0_r : forall n, min n 0 = 0.
-Proof. destruct n; auto. Qed.
-
-(** Compatibilities (consequences of monotonicity) *)
-
-Lemma succ_max_distr : forall n m, S (max n m) = max (S n) (S m).
-Proof. auto. Qed.
-
-Lemma succ_min_distr : forall n m, S (min n m) = min (S n) (S m).
-Proof. auto. Qed.
-
-Lemma plus_max_distr_l : forall n m p, max (p + n) (p + m) = p + max n m.
-Proof.
-intros. apply Nat.max_monotone. repeat red; auto with arith.
-Qed.
-
-Lemma plus_max_distr_r : forall n m p, max (n + p) (m + p) = max n m + p.
-Proof.
-intros. apply Nat.max_monotone with (f:=fun x => x + p).
-repeat red; auto with arith.
-Qed.
-
-Lemma plus_min_distr_l : forall n m p, min (p + n) (p + m) = p + min n m.
-Proof.
-intros. apply Nat.min_monotone. repeat red; auto with arith.
-Qed.
-
-Lemma plus_min_distr_r : forall n m p, min (n + p) (m + p) = min n m + p.
-Proof.
-intros. apply Nat.min_monotone with (f:=fun x => x + p).
-repeat red; auto with arith.
-Qed.
-
-Hint Resolve
- Nat.max_l Nat.max_r Nat.le_max_l Nat.le_max_r
- Nat.min_l Nat.min_r Nat.le_min_l Nat.le_min_r : arith v62.