GAP 4.8.9 installation with standard packages -- copy to your CoCalc project to get it
1 module generators 0 Hilbert basis elements of recession monoid 1 vertices of polyhedron 0 extreme rays of recession cone 1 support hyperplanes of polyhedron (homogenized) embedding dimension = 3 affine dimension of the polyhedron = 0 rank of recession monoid = 0 dehomogenization: 0 0 1 module rank = 1 *********************************************************************** 1 module generators: 0 1 1 0 Hilbert basis elements of recession monoid: 1 vertices of polyhedron: 0 1 1 0 extreme rays of recession cone: 1 support hyperplanes of polyhedron (homogenized): 0 0 1 2 equations: 1 0 0 0 1 -1 1 basis elements of lattice: 0 1 1