Zhou, Houchun; Jiang, Tongsong The properties of the cone directional derivative and application in optimization. (English) Zbl 0915.90242 J. Math. Study 28, No. 3, 44-49 (1995). Summary: The properties of the directional derivative and cone subgradient are discussed. As an application necessary optimality condition of Kuhn-Tucker type of the mathematical program can be established. MSC: 90C30 Nonlinear programming 49J52 Nonsmooth analysis Keywords:tangent cone; directional derivative; cone subgradient PDFBibTeX XMLCite \textit{H. Zhou} and \textit{T. Jiang}, J. Math. Study 28, No. 3, 44--49 (1995; Zbl 0915.90242)