Singular Manual: quotientLatticeBasis

| #### D.13.2.34 quotientLatticeBasis Procedure from library `gfan.lib` (see gfan_lib). Usage: quotientLatticeBasis(c); c cone Return: bigintmat, a basis of Z^n intersected with the span of c modulo Z^n intersected with the lineality space of c Example:
    LIB "gfan.lib";
    intmat M[3][2]=
    1,0,
    0,1,
    -1,0;
    cone c=coneViaPoints(M);
    bigintmat Q=quotientLatticeBasis(c);
    print(Q);
    ==> 0,1

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