The product of a collaboration of over 15 years, this volume is unique because it focuses on convex functions themselves, rather than on convex analysis. The authors explore the various classes and their characteristics, treating convex functions in both Euclidean and Banach spaces. Это и многое другое вы найдете в книге Convex Functions: Constructions, Characterizations and Counterexamples (Encyclopedia of Mathematics and its Applications) (Jonathan M. Borwein, Jon D. Vanderwerff)