Birbil, S.I.; Frenk, J.B.G.; Still, G.J. - Erasmus University Rotterdam, Econometric Institute - 2005
In this note we give an elementary proof of the Fritz-John and Karush-Kuhn-Tucker conditions for nonlinear finite dimensional programming problems with equality and/or inequality constraints.The proof avoids the implicit function theorem usually applied when dealing with equality constraints and...