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Found 38 Documents (Results 1–38)

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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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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Connectedness and other geometric properties of suns and Chebyshev sets. (English. Russian original) Zbl 1361.46012

J. Math. Sci., New York 217, No. 6, 683-730 (2016); translation from Fundam. Prikl. Mat. 19, No. 4, 21-91 (2014).
MSC:  46B20 41A65
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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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