We realize a study of various constraint qualification conditions for the existence of Lagrange multipliers for convex minimization problems in general normed vector spaces; it is based on a new formula for the normal cone to the constraint set, on local metric regularity and a metric regularity property on bounded subsets. As a by-product we obtain a characterization of the metric regularity of a finite family of closed convex sets.

Contact details are reproduced from the original publication and may be historical.

Dan Tiba

Weierstrass Institut, Mohrenstr. 39, D-10117 Berlin, Germany
and: Institute of Mathematics, Romanian Academy of Sciences, P.O. Box 1-764, 70700 Bucharest, Romania

dtiba@imar.ro

Constantin Zălinescu

University "Al. I. Cuza", Faculty of Mathematics, Bd. Copou Nr. 11, 6600 Iaşi, Romania

zalinesc@uaic.ro
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D. Tiba, C. Zălinescu. “On the Necessity of some Constraint Qualification Conditions in Convex Programming.” Journal of Convex Analysis 11 (2004), No. 1, 95–110. https://doi.org/10.68381/jca11007