In this paper, we discuss methods and concepts of Object Oriented Programming (OOP) for graphical modeling. We illustrate through a set of examples how geometrical models are built, and visualized ...

The purpose of this paper is to develop a useful technique for solving linear programmes involving more than one objective function. Motivation for solving multicriterion linear programmes is given ...

In this note we construct some counterexamples concerning upper semicontinuity and linear upper and lower semicontinuity of the solution sets and ε -solution sets of nonlinear programming programs: ...