GAP 4.8.9 installation with standard packages -- copy to your CoCalc project to get it
0 module generators 0 Hilbert basis elements of recession monoid 0 vertices of polyhedron 0 extreme rays of recession cone 0 support hyperplanes of polyhedron (homogenized) embedding dimension = 2 affine dimension of the polyhedron = -1 rank of recession monoid = 2 internal index = 1 dimension of maximal subspace = 2 size of triangulation = 0 resulting sum of |det|s = 0 grading: 0 0 module rank = 0 multiplicity = 0 Hilbert series: 0 denominator with 0 factors: degree of Hilbert Series as rational function = 0 The numerator of the Hilbert Series is symmetric. Hilbert polynomial: with common denominator = 1 *********************************************************************** 0 module generators: 0 Hilbert basis elements of degree 1: 0 further Hilbert basis elements of recession monoid of higher degree: 0 vertices of polyhedron: 0 extreme rays of recession cone: 2 basis elements of maximal subspace: 1 0 0 1 0 support hyperplanes of polyhedron (homogenized):