N = hyperplanes C
(N,w) = hyperplanes P
hyperplanes returns the defining affine hyperplanes for a polyhedron P. The output is (N,w), where the source of N has the dimension of the ambient space of P and w is a one column matrix in the target space of N such that P = {p in H  N*p = w} where H is the intersection of the defining affine halfspaces.
For a cone C the output is the matrix N, that is the same matrix as before but w is omitted since it is 0, so C = {c in H  N*c = 0} and H is the intersection of the defining linear halfspaces.
Please see V and Hrepresentation on the conventions we use for cones and polyhedra.




The object hyperplanes is a method function.