helm/software/matita/contribs/CoRN-Decl/model/non_examples/N_no_group.ma

   1 (**************************************************************************)
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   3 (*      ||M||                                                             *)
   4 (*      ||A||       A project by Andrea Asperti                           *)
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  14
  15 (* This file was automatically generated: do not edit *********************)
  16
  17 set "baseuri" "cic:/matita/CoRN-Decl/model/non_examples/N_no_group".
  18
  19 (* $Id: N_no_group.v,v 1.5 2004/04/08 08:20:33 lcf Exp $ *)
  20
  21 (* INCLUDE
  22 Nmonoid
  23 *)
  24
  25 (* INCLUDE
  26 CGroups
  27 *)
  28
  29 (*#* **Non-example of a group: $\langle$#&lang;#[nat],[[+]]$\rangle$#&rang;#
  30 There is no inverse function for the natural numbers with addition.
  31 *)
  32
  33 inline cic:/CoRN/model/non_examples/N_no_group/no_inverse_nat_plus.con.
  34
  35 (*#* Hence they do not form a CGroup.
  36 *)
  37
  38 inline cic:/CoRN/model/non_examples/N_no_group/no_group_nat_plus.con.
  39