--- /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/semigroups/Npossemigroup".
+
+include "CoRN.ma".
+
+(* $Id: Npossemigroup.v,v 1.6 2004/04/08 08:20:34 lcf Exp $ *)
+
+include "algebra/CSemiGroups.ma".
+
+include "model/semigroups/Nsemigroup.ma".
+
+include "model/setoids/Npossetoid.ma".
+
+(*#* **Examples of semi-groups: $\langle$#⟨#[Npos],[[+]]$\rangle$#⟩# and $\langle$#⟨#[Npos],[[*]]$\rangle$#⟩#
+***$\langle$#⟨#[Npos],[[+]]$\rangle$#⟩#
+The positive natural numbers form together with addition a subsemigroup
+ of the semigroup of the natural numbers with addition.
+*)
+
+inline "cic:/CoRN/model/semigroups/Npossemigroup/Npos_as_CSemiGroup.con".
+
+(*#* ***$\langle$#⟨#[Npos],[[*]]$\rangle$#⟩#
+Also together with multiplication, the positive numbers form a semigroup.
+*)
+
+inline "cic:/CoRN/model/semigroups/Npossemigroup/Nposmult_is_CSemiGroup.con".
+
+inline "cic:/CoRN/model/semigroups/Npossemigroup/Nposmult_as_CSemiGroup.con".
+