## Found 518 Documents (Results 1–100)

100
MathJax

### Some equivalent conditions of proximinality in nonreflexive Banach spaces. (English)Zbl 07547423

MSC:  41A65 46B20
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### $$\mathring{B}$$-complete sets: approximative and structural properties. (English. Russian original)Zbl 07538026

Sib. Math. J. 63, No. 3, 412-420 (2022); translation from Sib. Mat. Zh. 63, No. 3, 500-509 (2022).
MSC:  41Axx 46Bxx 46Axx
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### Finite-dimensional spaces where the class of Chebyshev sets coincides with the class of closed and monotone path-connected sets. (English. Russian original)Zbl 07518137

Math. Notes 111, No. 4, 505-514 (2022); translation from Mat. Zametki 111, No. 4, 483-493 (2022).
MSC:  41Axx 46Bxx 54Cxx
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### On the Chebyshev center and the nonemptiness of the intersection of nested sets. (English. Russian original)Zbl 07518134

Math. Notes 111, No. 3, 478-483 (2022); translation from Mat. Zametki 111, No. 3, 451-458 (2022).
MSC:  46B20 41A65
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### Refinement of the upper bound of the radius of a circular integral points set. (English)Zbl 07479490

MSC:  11D09 11H99
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### Generalizations of some concentration inequalities. (English)Zbl 1481.60037

MSC:  60E15 28A20 28A25
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### Erratum to: “Limiting properties of the distribution of primes in an arbitrarily large number of residue classes”. (English)Zbl 1477.11141

MSC:  11K70 28C15 11M26
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### Birkhoff-James orthogonality and applications: a survey. (English)Zbl 1482.46017

Bastos, M. Amélia (ed.) et al., Operator theory, functional analysis and applications. Proceedings of the 30th international workshop on operator theory and its applications, IWOTA 2019, Lisbon, Portugal, July 22–26, 2019. Cham: Birkhäuser. Oper. Theory: Adv. Appl. 282, 293-315 (2021).
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### Monotone path-connectedness of Chebyshev sets in three-dimensional spaces. (English. Russian original)Zbl 1472.41019

Sb. Math. 212, No. 5, 636-654 (2021); translation from Mat. Sb. 212, No. 5, 37-57 (2021).
MSC:  41A65 41A50 46A55
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### Properties of monotone connected sets. (English. Russian original)Zbl 1479.46018

Math. Notes 109, No. 5, 819-827 (2021); translation from Mat. Zametki 109, No. 5, 781-792 (2021).
MSC:  46B20 41A50 41A65
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### An example of a Banach space with non-Lipschitzian metric projection on any straight line. (English. Russian original)Zbl 1479.46010

Math. Notes 109, No. 2, 184-191 (2021); translation from Mat. Zametki 109, No. 2, 196-205 (2021).
MSC:  46B04 41A65
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MSC:  41A50
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### Differentiability of distance function and the proximinal condition implying convexity. (English)Zbl 1477.46049

MSC:  46G05 46B20 41A65
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### Properties of monotone path-connected sets. (English. Russian original)Zbl 1466.41017

Izv. Math. 85, No. 2, 306-331 (2021); translation from Izv. Ross. Akad. Nauk, Ser. Mat. 85, No. 2, 142-171 (2021).
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### Algorithms of minimization of Hausdorff deviation of a convex compact from a set of movable convex polygons. (Russian. English summary)Zbl 1470.52004

MSC:  52A10 46N10
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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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### On two stability types for a multicriteria integer linear programming problem. (English)Zbl 1457.90093

MSC:  90C09 90C29 90C31
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### Compromise Pareto’s evaluation of parameters linear regression. (Russian. English summary)Zbl 1456.90146

MSC:  90C29 62J05
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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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### The condensing KKM maps and best approximations in hyperconvex spaces. (English)Zbl 1478.54083

MSC:  54H25 54C60 41A50

### On Chebyshev centers in metric spaces. (English)Zbl 1474.41078

MSC:  41A65 41A50 46B20
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### Best coapproximation in quotient spaces. (English)Zbl 1455.41007

MSC:  41A50 41A52 41A65
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### On a family of groups generated by parabolic matrices. (English)Zbl 1472.20108

MSC:  20G20 20H20
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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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### On Chebyshev centers. (English)Zbl 1441.41008

MSC:  41A50 41A65 46B20

### Best approximation and fixed points for rational-type contraction mappings. (English)Zbl 1434.41025

MSC:  41A50 47H10 54H25
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### Convexity of suns in tangent directions. (English)Zbl 1441.46012

MSC:  46B20 41A50 41A65
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### Fixed points of generalized hybrid mappings on $$L_2$$-embedded sets in Banach spaces. (English)Zbl 07143035

MSC:  47H10 47H09
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### Proximity point properties for admitting center maps. (English)Zbl 1449.54073

MSC:  54H25 54E40
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### Limit theorems for the least common multiple of a random set of integers. (English)Zbl 1473.60052

MSC:  60F05 11N60 60F15
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### Primes in prime number races. (English)Zbl 1473.11177

MSC:  11N05 11B83 11M26
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### Convexity of suns in tangent directions. (English. Russian original)Zbl 1427.46008

Dokl. Math. 99, No. 1, 14-15 (2019); translation from Dokl. Akad. Nauk, Ross. Akad. Nauk 484, No. 2, 131-133 (2019).
MSC:  46B20 41A50 41A65
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### Continuity of the metric projection and local solar properties of sets. Continuity of the metric projection and local solar properties of sets, continuity of the metric projection and solar properties. (English)Zbl 1423.41050

MSC:  41A65 54C65
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### Asymptotics of Chebyshev polynomials. II: DCT subsets of $$\mathbb{R}$$. (English)Zbl 1426.41035

MSC:  41A50 30C10 30E15
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### New criteria for the existence of a continuous $$\epsilon$$-selection. (English. Russian original)Zbl 1408.41021

Math. Notes 104, No. 5, 727-734 (2018); translation from Mat. Zametki 104, No. 5, 745-754 (2018).
MSC:  41A50 41A65 54C60
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### Carathéodory sets and analytic balayage of measures. (English. Russian original)Zbl 1411.30025

Sb. Math. 209, No. 9, 1376-1389 (2018); translation from Mat. Sb. 209, No. 9, 128-141 (2018).
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### Convexity of generalized proximinal sets in Banach spaces. (English)Zbl 1428.49018

MSC:  49J53 41A50 41A65
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MSC:  41A50

### Convexity of Chebyshev sets with respect to tangent directions. (English. Russian original)Zbl 1404.41009

Russ. Math. Surv. 73, No. 2, 366-368 (2018); translation from Usp. Mat. Nauk 73, No. 2, 185-186 (2018).
MSC:  41A65
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### On the uniqueness of $$p$$-best approximation in probabilistic normed spaces. (English)Zbl 1401.41022

MSC:  41A65 41A50 46S40
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### A note in approximative compactness and midpoint locally $$k$$-uniform rotundity in Banach spaces. (English)Zbl 1399.46018

MSC:  46B20 41A65
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### Criteria for convexity of generalized Chebyshev sets in Banach spaces. (English)Zbl 1393.41014

MSC:  41A65 46B20
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### Lim’s center and fixed-point theorems for isometry mappings. (English)Zbl 06873696

MSC:  47H09 47H10
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### Ellipsoidal geometry of Banach spaces and applications. (English)Zbl 1470.46023

MSC:  46B20 46B25 46A80
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### Strong proximinality in metric spaces. (English)Zbl 1474.41075

MSC:  41A65 41A50 46B20
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MSC:  74P15
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### No smooth Julia sets for polynomial diffeomorphisms of $${\mathbb C}^2$$ with positive entropy. (English)Zbl 1403.37050

MSC:  37F10 37F50 30C10
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### Pareto set reduction based on an axiomatic approach with application of some metrics. (English. Russian original)Zbl 1403.90428

Comput. Math. Math. Phys. 57, No. 4, 645-652 (2017); translation from Zh. Vychisl. Mat. Mat. Fiz. 57, No. 4, 645-653 (2017).
MSC:  90B50 90C29
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### On semi-continuity of the metric co-projection. (English)Zbl 1374.41056

MSC:  41A65 41A50
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### Strongly proximinal sets are convex. (English)Zbl 1374.41049

MSC:  41A50 41A52 41A65
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### Semicontinuity of the metric projection and related maps. (English)Zbl 1377.41023

MSC:  41A65 41A50

### Projections onto closed convex sets in Hilbert spaces. (English)Zbl 1389.52007

MSC:  52A27 41A50 46C05
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### Best approximation in metric spaces. (English)Zbl 1369.41032

MSC:  41A50 41A52 41A65
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### A monotone path-connected set with outer radially lower continuous metric projection is a strict sun. (English. Russian original)Zbl 1376.46014

Sib. Math. J. 58, No. 1, 11-15 (2017); translation from Sib. Mat. Zh. 58, No. 1, 16-21 (2017).
MSC:  46B20 41A65
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### Sets with at most two-valued metric projection on a normed plane. (English. Russian original)Zbl 1372.46016

Math. Notes 101, No. 2, 352-364 (2017); translation from Mat. Zametki 101, No. 2, 286-301 (2017).
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### Asymptotics of Chebyshev polynomials. I: Subsets of $${\mathbb {R}}$$. (English)Zbl 1369.41031

MSC:  41A50 30E15 30C10
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### Holomorphic endomorphisms of $$\mathbb{P}^{3}(\mathbb{C})$$ related to a Lie algebra of type $$A_{3}$$ and catastrophe theory. (English)Zbl 1380.37099

MSC:  37F45 32H50 37F10 58K35
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### Best approximation and best coapproximation in metric linear spaces. (English)Zbl 1413.41036

MSC:  41A50 41A52 41A65
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### Some result in ordered metric spaces for rational type expressions. (English)Zbl 1462.54099

MSC:  54H25 47H10 41A50

### Best simultaneous approximation in quotient spaces. (English)Zbl 1366.41015

Cushing, Jim M. (ed.) et al., Applied analysis in biological and physical sciences. ICMBAA, Aligarh, India, June 4–6, 2015. New Delhi: Springer (ISBN 978-81-322-3638-2/hbk; 978-81-322-3640-5/ebook). Springer Proceedings in Mathematics & Statistics 186, 339-349 (2016).
MSC:  41A28 41A52 41A65
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### On best approximation and best coapproximation. (English)Zbl 1365.41017

MSC:  41A50 41A52 41A65
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### On the sets of points on the plane with integer-valued distances. (English. Russian original)Zbl 1360.52011

Math. Notes 100, No. 5, 743-746 (2016); translation from Mat. Zametki 100, No. 5, 757-761 (2016).
MSC:  52C10 11H06
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### Functionally closed sets and functionally convex sets in real Banach spaces. (English)Zbl 1362.52001

MSC:  52A01 39B82 39B52
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### Statistics in words and partitions of a set. (English)Zbl 1374.05028

MSC:  05A18 05A05 05A15

### On strong proximinality in normed linear spaces. (English)Zbl 1354.41026

MSC:  41A50 41A65 46B20
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### A conditional version of Chebyshev’s other inequality. (English)Zbl 1350.26033

MSC:  26D15 28C10
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### Chebyshev polynomials on generalized Julia sets. (English)Zbl 1355.37067

MSC:  37F10 30C75
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### Nonlinear Chebyshev approximation to set-valued functions. (English)Zbl 1347.41035

MSC:  41A50 41A28
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### On $$\varepsilon$$-coapproximation in quotient spaces. (English)Zbl 1343.41001

MSC:  41A50 41A52 54B15

### 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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### Geometrical and analytical properties of Chebyshev sets in Riemannian manifolds. (English)Zbl 1341.53039

MSC:  53B21 58C25 53B20
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