GAP 4.8.9 installation with standard packages -- copy to your CoCalc project to get it
2 Hilbert basis elements 2 Hilbert basis elements of degree 1 2 extreme rays 2 module generators over original monoid 2 support hyperplanes embedding dimension = 3 rank = 3 (maximal) external index = 1 internal index = 2 dimension of maximal subspace = 1 original monoid is not integrally closed size of triangulation = 1 resulting sum of |det|s = 2 grading: 1 1 0 degrees of extreme rays: 1: 2 Hilbert basis elements are of degree 1 *********************************************************************** 2 Hilbert basis elements of degree 1: 0 1 0 1 0 0 0 further Hilbert basis elements of higher degree: 2 extreme rays: 0 1 0 1 0 0 1 basis elements of maximal subspace: 0 0 1 2 module generators over original monoid: 0 0 0 0 1 0 2 support hyperplanes: 0 1 0 1 0 0