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Found 276 Documents (Results 1–100)

Continuous selections of set-valued mappings and approximation in asymmetric and semilinear spaces. (English. Russian original) Zbl 1532.41034

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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Geometric structure of Chebyshev sets and suns in three-dimensional spaces with a cylindrical norm. (English. Russian original) Zbl 1465.41011

Mosc. Univ. Math. Bull. 75, No. 5, 209-215 (2020); translation from Vestn. Mosk. Univ., Ser. I 75, No. 5, 26-32 (2020).
MSC:  41A99 52A15 54C50
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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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Chebyshev centres, Jung constants, and their applications. (English. Russian original) Zbl 1435.41028

Russ. Math. Surv. 74, No. 5, 775-849 (2019); translation from Usp. Mat. Nauk 74, No. 5, 3-82 (2019).
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Optimal mutual location of compact sets in spaces endowed with Euclidean invariant Gromov-Hausdorff metric. (English. Russian original) Zbl 1416.51007

Mosc. Univ. Math. Bull. 73, No. 5, 182-189 (2018); translation from Vestn. Mosk. Univ., Ser. I 73, No. 5, 14-22 (2018).
MSC:  51K05 54E35 46B85
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Connectedness and solarity in problems of best and near-best approximation. (English. Russian original) Zbl 1350.41031

Russ. Math. Surv. 71, No. 1, 1-77 (2016); translation from Usp. Mat. Nauk 71, No. 1, 3-84 (2016).
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Monograph on the occasion of 100th birthday anniversary of Zygmunt Zahorski. (Polish, English) Zbl 1305.00174

Monografia (Gliwice) 545. Gliwice: Wydawnictwo Politechniki Śląskiej (ISBN 978-83-7880-206-8/pbk). 379 p., open access (2015).
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Convergence of slices, geometric aspects in Banach spaces and proximinality. (English) Zbl 1331.46012

Ansari, Qamrul Hasan (ed.), Nonlinear analysis. Approximation theory, optimization and applications. Contributions based on the presentations at the special session on approximation theory and optimization in the Indian Mathematical Society conference, Varanasi, India, January 12–15, 2012. New Delhi: Birkhäuser/Springer (ISBN 978-81-322-1882-1/hbk; 978-81-322-1883-8/ebook). Trends in Mathematics, 61-107 (2014).
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Chebyshev sets, Klee sets, and Chebyshev centers with respect to Bregman distances: recent results and open problems. (English) Zbl 1251.41011

Bauschke, Heinz H. (ed.) et al., Fixed-point algorithms for inverse problems in science and engineering. Based on the presentations at the interdisciplinary workshop, BIRS, Banff, Canada, November 1–6, 2009. New York, NY: Springer (ISBN 978-1-4419-9568-1/hbk; 978-1-4419-9569-8/ebook). Springer Optimization and Its Applications 49, 1-21 (2011).
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