--- /dev/null
+(**************************************************************************)
+(* ___ *)
+(* ||M|| *)
+(* ||A|| A project by Andrea Asperti *)
+(* ||T|| *)
+(* ||I|| Developers: *)
+(* ||T|| The HELM team. *)
+(* ||A|| http://helm.cs.unibo.it *)
+(* \ / *)
+(* \ / This file is distributed under the terms of the *)
+(* v GNU General Public License Version 2 *)
+(* *)
+(**************************************************************************)
+
+(* This file was automatically generated: do not edit *********************)
+
+set "baseuri" "cic:/matita/CoRN-Decl/model/rings/Qring".
+
+include "CoRN.ma".
+
+(* $Id: Qring.v,v 1.8 2004/04/23 10:01:03 lcf Exp $ *)
+
+include "model/abgroups/Qabgroup.ma".
+
+include "algebra/CRings.ma".
+
+include "model/rings/Zring.ma".
+
+(*#* **Example of a ring: $\langle$#⟨#[Q],[[+]],[[*]]$\rangle$#⟩#
+Because [Q] forms an abelian group with addition, a monoid with
+multiplication and it satisfies the distributive law, it is a ring.
+*)
+
+inline "cic:/CoRN/model/rings/Qring/Q_mult_plus_is_dist.con".
+
+inline "cic:/CoRN/model/rings/Qring/Q_is_CRing.con".
+
+inline "cic:/CoRN/model/rings/Qring/Q_as_CRing.con".
+
+(*#* The following lemmas are used in the proof that [Q] is Archimeadian.
+*)
+
+inline "cic:/CoRN/model/rings/Qring/injz_Nring.con".
+
+inline "cic:/CoRN/model/rings/Qring/injZ_eq.con".
+
+inline "cic:/CoRN/model/rings/Qring/nring_Q.con".
+