Some Notes on Approximate Optimality Conditions in Scalar and Vector Optimization Problems
We give an overview and make some remarks on the approximate optimality conditions, for a nonlinear programming problem, given by Haeser and Schuverdt (2011) and by Fiacco and McCormick (1968a). Other first-order optimality conditions in absence of constraint qualifications are examined. Finally, we extend to a Pareto problem the approximate optimality conditions of Haeser and Schuverdt.