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Found 481 Documents (Results 1–100)

Continuous selections of set-valued mappings and approximation in asymmetric and semilinear spaces. (English. Russian original) Zbl 07773489

Izv. Math. 87, No. 4, 835-851 (2023); translation from Izv. Ross. Akad. Nauk, Ser. Mat. 87, No. 4, 205-224 (2023).
MSC:  41A65 54C65
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Some classical problems of geometric approximation theory in asymmetric spaces. (English. Russian original) Zbl 1522.46012

Math. Notes 112, No. 1, 3-16 (2022); translation from Mat. Zametki 112, No. 1, 3-19 (2022).
MSC:  46B20 41A65 54C65
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Approximatively compact sets in asymmetric Efimov-Stechkin spaces and convexity of almost suns. (English. Russian original) Zbl 1489.41020

Math. Notes 110, No. 6, 947-951 (2021); translation from Mat. Zametki 110, No. 6, 916-921 (2021).
MSC:  41A65 46B20
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Bounded contractibility of strict suns in three-dimensional spaces. (English. Russian original) Zbl 1452.46010

J. Math. Sci., New York 250, No. 3, 385-390 (2020); translation from Fundam. Prikl. Mat. 22, No. 1, 3-11 (2018).
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A separation theorem for nonconvex sets and its applications. (English. Russian original) Zbl 1453.46063

J. Math. Sci., New York 245, No. 2, 125-154 (2020); translation from Fundam. Prikl. Mat. 21, No. 4, 23-66 (2016).
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\(\varepsilon\)-superposition and truncation dimensions, and multivariate method for \(\infty\)-variate linear problems. (English) Zbl 1445.41019

Hickernell, Fred J. (ed.) et al., Multivariate algorithms and information-based complexity. Berlin: De Gruyter. Radon Ser. Comput. Appl. Math. 27, 89-108 (2020).
MSC:  41A63 28C20 41A65
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A survey on isometries between Lipschitz spaces. (English) Zbl 1446.46004

Siles Molina, Mercedes (ed.) et al., Associative and non-associative algebras and applications. Proceedings of the 3rd Moroccan Andalusian meeting on algebras and their applications, MAMAA 2018, Chefchaouen, Morocco, April 12–14, 2018. Cham: Springer. Springer Proc. Math. Stat. 311, 51-88 (2020).
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The extended Legendre transform and related variational principles. (English. Russian original) Zbl 1448.46060

Math. Notes 107, No. 3, 369-382 (2020); translation from Mat. Zametki 107, No. 3, 323-340 (2020).
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The nearest point theorem for weakly convex sets in asymmetric seminormed spaces. (English) Zbl 1475.46069

Evtushenko, Yury (ed.) et al., Optimization and applications. 9th international conference, OPTIMA 2018, Petrovac, Montenegro, October 1–5, 2018. Revised selected papers. Cham: Springer. Commun. Comput. Inf. Sci. 974, 21-34 (2019).
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A formula for the superdifferential of the distance determined by the gauge function to the complement of a convex set. (English. Russian original) Zbl 1442.46058

Math. Notes 106, No. 5, 703-710 (2019); translation from Mat. Zametki 106, No. 5, 660-668 (2019).
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Generalized characteristics of smoothness and some extreme problems of the approximation theory of functions in the space \(L_2(\mathbb{R})\). I. (English. Russian original) Zbl 1428.41015

Ukr. Math. J. 70, No. 9, 1345-1374 (2019); translation from Ukr. Mat. Zh. 70, No. 9, 1166-1191 (2018).
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New approach to Farkas’ theorem of the alternative. (English. Russian original) Zbl 1428.46002

Dokl. Math. 99, No. 2, 208-210 (2019); translation from Dokl. Akad. Nauk, Ross. Akad. Nauk 485, No. 6, 655-658 (2019).
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On generalized pseudo- and quasiconvexities for nonsmooth functions. (English) Zbl 1408.49014

Rassias, Themistocles M. (ed.), Current research in nonlinear analysis. In honor of Haim Brezis and Louis Nirenberg. Cham: Springer. Springer Optim. Appl. 135, 129-155 (2018).
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Applied nonlinear functional analysis. An introduction. (English) Zbl 1404.46001

De Gruyter Graduate. Berlin: De Gruyter (ISBN 978-3-11-051622-7/pbk; 978-3-11-053298-2/ebook). x, 612 p. (2018).
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Selected topics in non-Archimedean Banach spaces. (English) Zbl 1398.46003

Lecture Notes in Nonlinear Analysis 17. Toruń: Nicolaus Copernicus University, Juliusz Schauder Center for Nonlinear Studies (ISBN 977-2082-433-80-9/pbk). 170 p. (2018).
MSC:  46-02 46S10 47S10
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