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D.15.23.16 Betti

Procedure from library modules.lib (see modules_lib).

Usage:
Betti(reso); reso Resolution

Return:
intmat, Bettimatrix of the resolution

Note:
for a clear overview use printBetti

Example:
 
LIB "modules.lib";
ring r;
matrix m[1][3]=x,y,z;
Matrix M=m;
Module N=coker(M);
Resolution R=mRes(N);
R;
==>  1      3      3      1      
==> r <--  r <--  r <--  r
==> 
==> 0      1      2      3      
==> 
==> 
Betti(R);
==> 1,3,3,1