Kipka, R.; Ledyaev, Yuri A generalized multidirectional mean value inequality and dynamic optimization. (English) Zbl 1423.49011 Optimization 68, No. 7, 1365-1389 (2019). MSC: 49J45 49J52 PDFBibTeX XMLCite \textit{R. Kipka} and \textit{Y. Ledyaev}, Optimization 68, No. 7, 1365--1389 (2019; Zbl 1423.49011) Full Text: DOI
Ledyaev, Yuri S. Criteria for convexity of closed sets in Banach spaces. (English. Russian original) Zbl 1429.52001 Proc. Steklov Inst. Math. 304, 190-204 (2019); translation from Tr. Mat. Inst. Steklova 304, 205-220 (2019). Reviewer: Mircea Balaj (Oradea) MSC: 52A05 26B25 PDFBibTeX XMLCite \textit{Y. S. Ledyaev}, Proc. Steklov Inst. Math. 304, 190--204 (2019; Zbl 1429.52001); translation from Tr. Mat. Inst. Steklova 304, 205--220 (2019) Full Text: DOI
Ledyaev, Yu. S.; Zhu, Qiji J. Nonsmooth analysis on smooth manifolds. (English) Zbl 1157.49021 Trans. Am. Math. Soc. 359, No. 8, 3687-3732 (2007). Reviewer: Juan-Enrique Martínez-Legaz (Barcelona) MSC: 49J52 58C05 PDFBibTeX XMLCite \textit{Yu. S. Ledyaev} and \textit{Q. J. Zhu}, Trans. Am. Math. Soc. 359, No. 8, 3687--3732 (2007; Zbl 1157.49021) Full Text: DOI