Taylor, Peter D. Subgradients of a convex function obtained from a directional derivative. (English) Zbl 0251.46050 Pac. J. Math. 44, 739-747 (1973). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 12 Documents MSC: 46G05 Derivatives of functions in infinite-dimensional spaces PDFBibTeX XMLCite \textit{P. D. Taylor}, Pac. J. Math. 44, 739--747 (1973; Zbl 0251.46050) Full Text: DOI