Ledyaev, Yu S.; Treiman, J. S. Sub- and supergradients of envelopes, semicontinuous closures, and limits of sequences of functions. (English. Russian original) Zbl 1248.49019 Russ. Math. Surv. 67, No. 2, 345-373 (2012); translation from Usp. Mat. Nauk 67, No. 2, 157-186 (2012). Cited in 4 Documents MSC: 49J52 Nonsmooth analysis 49J45 Methods involving semicontinuity and convergence; relaxation 49Q20 Variational problems in a geometric measure-theoretic setting 52A35 Helly-type theorems and geometric transversal theory 58C20 Differentiation theory (Gateaux, Fréchet, etc.) on manifolds Keywords:nonlinear functional analysis; nonsmooth analysis; upper and lower envelopes; generalizations of theorems of Jung, Helly, and Stegall PDF BibTeX XML Cite \textit{Y. S. Ledyaev} and \textit{J. S. Treiman}, Russ. Math. Surv. 67, No. 2, 345--373 (2012; Zbl 1248.49019); translation from Usp. Mat. Nauk 67, No. 2, 157--186 (2012) Full Text: DOI OpenURL