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-rw-r--r--theories/Sets/Uniset.v14
1 files changed, 7 insertions, 7 deletions
diff --git a/theories/Sets/Uniset.v b/theories/Sets/Uniset.v
index e297d97e..7940bda1 100644
--- a/theories/Sets/Uniset.v
+++ b/theories/Sets/Uniset.v
@@ -1,9 +1,11 @@
(************************************************************************)
-(* v * The Coq Proof Assistant / The Coq Development Team *)
-(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2016 *)
+(* * The Coq Proof Assistant / The Coq Development Team *)
+(* v * INRIA, CNRS and contributors - Copyright 1999-2018 *)
+(* <O___,, * (see CREDITS file for the list of authors) *)
(* \VV/ **************************************************************)
-(* // * This file is distributed under the terms of the *)
-(* * GNU Lesser General Public License Version 2.1 *)
+(* // * This file is distributed under the terms of the *)
+(* * GNU Lesser General Public License Version 2.1 *)
+(* * (see LICENSE file for the text of the license) *)
(************************************************************************)
(** Sets as characteristic functions *)
@@ -11,7 +13,7 @@
(* G. Huet 1-9-95 *)
(* Updated Papageno 12/98 *)
-Require Import Bool.
+Require Import Bool Permut.
Set Implicit Arguments.
@@ -138,8 +140,6 @@ Hint Resolve seq_right.
(** Here we should make uniset an abstract datatype, by hiding [Charac],
[union], [charac]; all further properties are proved abstractly *)
-Require Import Permut.
-
Lemma union_rotate :
forall x y z:uniset, seq (union x (union y z)) (union z (union x y)).
Proof.