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(************************************************************************)
(* * 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 *)
(* * (see LICENSE file for the text of the license) *)
(************************************************************************)
Require Export Ring.
Require Import BinPos BinNat.
Import InitialRing.
Set Implicit Arguments.
Ltac Ncst t :=
match isNcst t with
true => t
| _ => constr:(NotConstant)
end.
Add Ring Nr : Nth (decidable Neqb_ok, constants [Ncst]).
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