Singular Manual: facets

| #### D.13.2.20 facets Procedure from library `gfan.lib` (see gfan_lib). Usage: facets(c); c cone facets(p); p polytope Return: bigintmat, the facets of c resp p Example:
    LIB "gfan.lib";
    intmat M1[2][2]=
    1,0,
    0,1;
    cone c1=coneViaPoints(M1);
    bigintmat F1=facets(c1);
    print(F1);
    ==> 0,1,
    ==> 1,0
    intmat M2[2][2]=
    1,1,
    0,-1;
    cone c2=coneViaPoints(M2);
    bigintmat F2=facets(c2);
    print(F2);
    ==> 1,-1,
    ==> 1, 0

User manual for Singular version 4.3.2, 2023, generated by texi2html.