An interesting question for linear programming (LP) algorithms is how to deal with solutions in which the number of nonzero variables less than rows matrix standard form. approach that basis deficiency-allowing (BDA) simplex variations, work a subset independent columns coefficient form, wherein not necessarily represented by square matrix. We describe one such algorithm several variants. The r...

A mixed integer continuous nonlinear model and a solution method for the problem of orthogonally packing identical rectangles within an arbitrary convex region are introduced in the present work. The convex region is assumed to be made of an isotropic material in such a way that arbitrary rotations of the items, preserving the orthogonality constraint, are allowed. The solution method is based ...

A mixed integer continuous nonlinear model and a solution method for the problem of orthogonally packing identical rectangles within an arbitrary convex region are introduced in the present work. The convex region is assumed to be made of an isotropic material in such a way that arbitrary rotations of the items, preserving the orthogonality constraint, are allowed. The solution method is based ...