The sum of the intersections of a cone with a linear subspace and of dual cone with orthogonal complementary subspace
Tài liệu tham khảo
Ben-Israel, 1964, Notes on Linear Inequalities, 1: The Intersection of the Nonnegative Orthant with Complementary Orthogonal Subspaces, J. Math. Anal. Appl., 9, 303, 10.1016/0022-247X(64)90045-9
Valentine, 1964