Lewis, A. S.; Ralph, D. A nonlinear duality result equivalent to the Clarke-Ledyaev mean value inequality. (English) Zbl 0844.49014 Nonlinear Anal., Theory Methods Appl. 26, No. 2, 343-350 (1996). Reviewer: X.Q.Yang (Nedlands) MSC: 49J52 PDFBibTeX XMLCite \textit{A. S. Lewis} and \textit{D. Ralph}, Nonlinear Anal., Theory Methods Appl. 26, No. 2, 343--350 (1996; Zbl 0844.49014) Full Text: DOI
Simons, S. Subtangents with controlled slope. (English) Zbl 0836.49009 Nonlinear Anal., Theory Methods Appl. 22, No. 11, 1373-1389 (1994). Reviewer: P.Loewen (Bath) MSC: 49J52 49J50 46A22 46A55 46B10 47H05 PDFBibTeX XMLCite \textit{S. Simons}, Nonlinear Anal., Theory Methods Appl. 22, No. 11, 1373--1389 (1994; Zbl 0836.49009) Full Text: DOI
Ledzewicz-Kowalewska, Urszula Optimality and Pareto optimality conditions for the problems with nonregular operator equality constraints. (English) Zbl 0736.49013 Nonlinear Anal., Theory Methods Appl. 17, No. 4, 347-360 (1991). Reviewer: U.Ledzewicz-Kowalewska MSC: 49K10 49M37 47N10 49K27 49M29 PDFBibTeX XMLCite \textit{U. Ledzewicz-Kowalewska}, Nonlinear Anal., Theory Methods Appl. 17, No. 4, 347--360 (1991; Zbl 0736.49013) Full Text: DOI
Singer, Ivan Some new applications of the Fenchel-Rockafellar duality theorem: Lagrange multiplier theorems and hyperplane theorems for convex optimization and best approximation. (English) Zbl 0444.41015 Nonlinear Anal., Theory Methods Appl. 3, 239-248 (1979). MSC: 41A50 41A65 PDFBibTeX XMLCite \textit{I. Singer}, Nonlinear Anal., Theory Methods Appl. 3, 239--248 (1979; Zbl 0444.41015) Full Text: DOI
Altman, Mieczyslaw A general extremum principle for optimization problems. (English) Zbl 0426.90078 Nonlinear Anal., Theory Methods Appl. 3, 891-895 (1979). MSC: 90C30 90C48 49M29 PDFBibTeX XMLCite \textit{M. Altman}, Nonlinear Anal., Theory Methods Appl. 3, 891--895 (1979; Zbl 0426.90078) Full Text: DOI