GAP 4.8.9 installation with standard packages -- copy to your CoCalc project to get it
0 extreme rays 0 support hyperplanes embedding dimension = 2 rank = 2 (maximal) external index = 1 dimension of maximal subspace = 2 *********************************************************************** 0 extreme rays: 2 basis elements of maximal subspace: 1 0 0 1 0 support hyperplanes: