2 ||M|| This file is part of HELM, an Hypertextual, Electronic
3 ||A|| Library of Mathematics, developed at the Computer Science
4 ||T|| Department, University of Bologna, Italy.
6 ||T|| HELM is free software; you can redistribute it and/or
7 ||A|| modify it under the terms of the GNU General Public License
8 \ / version 2 or (at your option) any later version.
9 \ / This software is distributed as is, NO WARRANTY.
10 V_______________________________________________________________ *)
14 mutable tp : int list;
15 mutable t1 : int list;
16 mutable tn : (int * int) list;
19 val init: unit -> csys
21 val add_nonzero: csys -> Entity.attrs -> unit
23 val add_zero: csys -> Entity.attrs -> unit
25 val add_equal: csys -> Entity.attrs -> Entity.attrs -> unit