...specify a polyhedron {$ P = \{x \ | \ Ax \le b\} $}?
...specify a polyhedron using vertices V?
...specify a polyhedron {$ P = \{x \ | \ Ax \le b, \ A_e x = b_e \} $}?
...retrieve the H-representation {$ P = \{x \ | \ Ax \le b, \ A_e x = b_e \} $}?
...retrieve rays and vertices of an H-polytope {$ P = \{x \ | \ Ax \le b, \ A_e x = b_e \} $}?
...remove redundant faces of a polyhedron?
...plot polyhedron P in red and polyhedron Q in blue in the same figure?
...normalize the H-representation of a polyhedron?
...find out how many inequality and equality constraints define polyhedron P?
...plot the k-th facet of polyhedron P?
...compute the Chebyshev center and radius of the k-th facet of polyhedron P?
...project point z onto the k-th facet of polyhedron P?
...determine whether polyhedron P is empty?
...determine whether polyhedron P is lower-dimensional?
...specify an n-dimensional hyperbox with unit length of its sides?
...compute the bounding box of a polyhedron P?
...compute the bounding box of an array of polyhedra (say, A = [P; Q]?