Rockafellar, R. T. Generalized directional derivatives and subgradients of nonconvex functions. (English) Zbl 0447.49009 Can. J. Math. 32, 257-280 (1980). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 7 ReviewsCited in 181 Documents MSC: 49J45 Methods involving semicontinuity and convergence; relaxation 26B25 Convexity of real functions of several variables, generalizations 26B05 Continuity and differentiation questions 26B12 Calculus of vector functions Keywords:subgradients; subdifferential; directional derivatives; cones; epigraph; convex PDF BibTeX XML Cite \textit{R. T. Rockafellar}, Can. J. Math. 32, 257--280 (1980; Zbl 0447.49009) Full Text: DOI