A generalization of the class of lower CkC^k−functions introduced by R.T. Rockafellar [28] called lower TkT^k−functions is proposed in the infinite dimensional case. Mappings of class TkT^k are studied for themselves as they seem to deserve some attention. Other classes of functions such as subconvex functions, subsmooth functions, semismooth functions are either introduced or extended to the case of an infinite dimensional Banach space.

Contact details are reproduced from the original publication and may be historical.

Jean-Paul Penot

Département de Mathématiques Appliquéees, CNRS URA 1204, Université de Pau, 64000 Pau, France

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J.-P. Penot. “Favorable Classes of Mappings and Multimappings in Nonlinear Analysis and Optimization.” Journal of Convex Analysis 3 (1996), No. 1, 97–116. https://doi.org/10.68381/jca03008