1 (**************************************************************************)
4 (* ||A|| A project by Andrea Asperti *)
6 (* ||I|| Developers: *)
7 (* ||T|| The HELM team. *)
8 (* ||A|| http://helm.cs.unibo.it *)
10 (* \ / This file is distributed under the terms of the *)
11 (* v GNU General Public License Version 2 *)
13 (**************************************************************************)
15 (* This file was automatically generated: do not edit *********************)
17 set "baseuri" "cic:/matita/CoRN-Decl/model/semigroups/Npossemigroup".
19 (* $Id: Npossemigroup.v,v 1.6 2004/04/08 08:20:34 lcf Exp $ *)
33 (*#* **Examples of semi-groups: $\langle$#⟨#[Npos],[[+]]$\rangle$#⟩# and $\langle$#⟨#[Npos],[[*]]$\rangle$#⟩#
34 ***$\langle$#⟨#[Npos],[[+]]$\rangle$#⟩#
35 The positive natural numbers form together with addition a subsemigroup
36 of the semigroup of the natural numbers with addition.
39 inline cic:/CoRN/model/semigroups/Npossemigroup/Npos_as_CSemiGroup.con.
41 (*#* ***$\langle$#⟨#[Npos],[[*]]$\rangle$#⟩#
42 Also together with multiplication, the positive numbers form a semigroup.
45 inline cic:/CoRN/model/semigroups/Npossemigroup/Nposmult_is_CSemiGroup.con.
47 inline cic:/CoRN/model/semigroups/Npossemigroup/Nposmult_as_CSemiGroup.con.