Edit Profile (opens in new tab) Tsar’kov, Igor’ Germanovich Co-Author Distance Author ID: tsarkov.igor-g Published as: Tsar’kov, I. G.; Tsar’kov, Igor’ G.; Tsarkov, I. G.; Tsar’kov, Igor G. more...less External Links: MGP · ORCID · Wikidata · Math-Net.Ru Documents Indexed: 106 Publications since 1984, including 1 Book Co-Authors: 16 Co-Authors with 22 Joint Publications 292 Co-Co-Authors all top 5 Co-Authors 83 single-authored 16 Alimov, Alexey R. 5 Konyagin, Sergeĭ Vladimirovich 2 Berdyshev, Vitaliĭ Ivanovich 2 Telyakovskiĭ, Sergeĭ Aleksandrovich 1 Arestov, Vitaliĭ Vladimirovich 1 Chernykh, Nikolaĭ Ivanovich 1 Demina, T. V. 1 Kaminskij, V. A. 1 Karlov, M. I. 1 Kholshchevnikova, Natal’ya Nikolaevna 1 Osilenker, Boris P. 1 Ryutin, Konstantin S. 1 Samokhin, Mikhail V. 1 Shmatkov, V. A. 1 Subbotin, Yuriĭ Nikolaevich 1 Yudin, Vladimir A. all top 5 Serials 23 Mathematical Notes 14 Russian Journal of Mathematical Physics 11 Izvestiya: Mathematics 7 Russian Mathematical Surveys 7 Sbornik: Mathematics 4 Moscow University Mathematics Bulletin 4 Doklady Mathematics 3 Matematicheskie Zametki 3 Functional Analysis and its Applications 3 Proceedings of the Steklov Institute of Mathematics 2 Journal of Approximation Theory 2 Russian Academy of Sciences. Sbornik. Mathematics 2 Russian Academy of Sciences. Doklady. Mathematics 2 Journal of Mathematical Sciences (New York) 2 Lobachevskii Journal of Mathematics 1 Journal of Mathematical Analysis and Applications 1 Uspekhi Matematicheskikh Nauk [N. S.] 1 Results in Mathematics 1 Siberian Mathematical Journal 1 Soviet Mathematics. Doklady 1 Mathematics of the USSR, Sbornik 1 Vestnik Moskovskogo Universiteta. Seriya I. Matematika, Mekhanika 1 Matematicheskiĭ Sbornik 1 Journal of Convex Analysis 1 Fundamental’naya i Prikladnaya Matematika 1 Set-Valued and Variational Analysis 1 Eurasian Mathematical Journal 1 Springer Monographs in Mathematics all top 5 Fields 80 Approximations and expansions (41-XX) 60 Functional analysis (46-XX) 27 General topology (54-XX) 8 Partial differential equations (35-XX) 6 Operator theory (47-XX) 5 Convex and discrete geometry (52-XX) 4 Calculus of variations and optimal control; optimization (49-XX) 3 Global analysis, analysis on manifolds (58-XX) 3 Optics, electromagnetic theory (78-XX) 1 History and biography (01-XX) 1 Real functions (26-XX) 1 Measure and integration (28-XX) 1 Several complex variables and analytic spaces (32-XX) 1 Numerical analysis (65-XX) Publications by Year all cited Publications top 5 cited Publications Citations contained in zbMATH Open 82 Publications have been cited 616 times in 132 Documents Cited by ▼ Year ▼ Connectedness and solarity in problems of best and near-best approximation. Zbl 1350.41031 Alimov, A. R.; Tsar’kov, I. G. 70 2016 Approximative properties of sets and continuous selections. Zbl 1455.54019 Tsar’kov, Igor’ G. 21 2020 Connectedness and other geometric properties of suns and Chebyshev sets. Zbl 1361.46012 Alimov, Alexey R.; Tsar’kov, I. G. 20 2016 Weakly monotone sets and continuous selection in asymmetric spaces. Zbl 1428.41042 Tsar’kov, Igor’ G. 20 2019 Local and global continuous \( \varepsilon\)-selection. Zbl 1356.46013 Tsar’kov, Igor G. 19 2016 Chebyshev centres, Jung constants, and their applications. Zbl 1435.41028 Alimov, A. R.; Tsar’kov, I. G. 18 2019 Geometric approximation theory. Zbl 1494.41001 Alimov, Alexey R.; Tsar’kov, Igor’ G. 18 2022 Relations between certain classes of sets in Banach spaces. Zbl 0625.46017 Tsar’kov, I. G. 17 1986 Continuous \(\varepsilon\)-selection. Zbl 1347.41047 Tsar’kov, I. G. 17 2016 Continuous selections for metric projection operators and for their generalizations. Zbl 1410.46007 Tsar’kov, I. G. 16 2018 Uniform convexity in nonsymmetric spaces. Zbl 1489.46022 Tsar’kov, I. G. 16 2021 Ball-complete sets and solar properties of sets in asymmetric spaces. Zbl 1506.46016 Alimov, Alexey R.; Tsar’kov, Igor’ G. 16 2022 Continuous selections in asymmetric spaces. Zbl 1437.54017 Tsar’kov, I. G. 14 2018 Properties of sets that have a continuous selection of the operator \(P^{\delta}\). Zbl 0729.46011 Tsar’kov, I. G. 13 1990 Properties of sets admitting stable \(\varepsilon \)-selections. Zbl 1245.49024 Tsar’kov, I. G. 13 2011 Suns, moons, and \(\mathring{B}\)-complete sets in asymmetric spaces. Zbl 1515.41019 Alimov, Alexey R.; Tsar’kov, Igor’ G. 13 2022 \(\mathring{B}\)-complete sets: approximative and structural properties. Zbl 1506.46017 Alimov, A. R.; Tsarkov, I. G. 13 2022 Properties of monotone path-connected sets. Zbl 1466.41017 Tsar’kov, Igor’ G. 12 2021 Singular sets of surfaces. Zbl 1386.46019 Tsar’kov, I. G. 10 2017 Nonunique solvability of certain differential equations and their connection with geometric approximation theory. Zbl 1110.47313 Tsar’kov, I. G. 9 2004 Properties of suns in the spaces \(L^1\) and \(C(Q)\). Zbl 1487.41042 Tsar’kov, I. G. 9 2021 Approximatively compact sets in asymmetric Efimov-Stechkin spaces and convexity of almost suns. Zbl 1489.41020 Alimov, A. R.; Tsar’kov, I. G. 8 2021 Some classical problems of geometric approximation theory in asymmetric spaces. Zbl 1522.46012 Alimov, A. R.; Tsar’kov, I. G. 8 2022 Local “homogeneity” of sets of uniqueness. Zbl 0694.46019 Tsarkov, I. G. 7 1989 Continuity of the metric projection, structural and approximate properties of sets. Zbl 0703.46010 Tsar’kov, I. G. 7 1990 Properties of \(C^1\)-solutions to the eikonal equation. Zbl 1373.35088 Tsar’kov, I. G. 7 2017 Continuous selection for set-valued mappings. Zbl 1376.54021 Tsar’kov, Igor G. 7 2017 Continuous \(\epsilon\)-selection and monotone path-connected sets. Zbl 1376.41028 Tsar’kov, I. G. 7 2017 Smoothness of subspace sections of the unit balls of \(C(Q)\) and \(L^1\). Zbl 1464.46022 Alimov, A. R.; Tsar’kov, I. G. 7 2021 Geometry of the singular set of hypersurfaces and the eikonal equation. Zbl 1507.35080 Tsar’kov, I. G. 7 2022 Smooth solutions of the eikonal equation and the behaviour of local minima of the distance function. Zbl 1429.41034 Tsar’kov, Igor’ G. 6 2019 Convexity and connectedness of Chebyshev sets and sums. Zbl 0951.41017 Karlov, M. I.; Tsar’kov, I. G. 6 1997 The geometry of a singular set of hypersurfaces and the eikonal equation. Zbl 1451.35060 Tsar’kov, I. G. 6 2020 Bounded Chebyshev sets in finite-dimensional Banach spaces. Zbl 0602.41033 Tsar’kov, I. G. 6 1984 Efimov-Stechkin spaces. Zbl 0636.46016 Konyagin, S. V.; Tsar’kov, I. G. 6 1986 Existence, uniqueness, and stability of best and near-best approximations. Zbl 1534.41017 Alimov, Alexey R.; Ryutin, Konstantin S.; Tsar’kov, Igor G. 6 2023 Solarity and proximinality in generalized rational approximation in spaces \(C(Q)\) and \(L^p\). Zbl 1525.41007 Alimov, A. R.; Tsar’kov, I. G. 6 2022 Solarity and connectedness of sets in the space \(C[a,b]\) and in finite-dimensional polyhedral spaces. Zbl 1502.41013 Tsar’kov, I. G. 6 2022 New criteria for the existence of a continuous \(\epsilon\)-selection. Zbl 1408.41021 Tsar’kov, I. G. 5 2018 On global existence of an implicit function. Zbl 0824.58010 Tsar’kov, I. G. 5 1993 Extension of the Hilbert-valued Lipschitz mappings. Zbl 0965.46047 Tsar’kov, I. G. 5 1999 Continuous selection from the sets of best and near-best approximation. Zbl 1401.41023 Tsar’kov, I. G. 5 2017 Smoothing of uniformly continuous mappings in \(L_ p\) spaces. Zbl 0821.46037 Tsar’kov, I. G. 4 1993 Continuity of the metric projection, structural and approximate properties of sets. Zbl 0695.46003 Tsar’kov, I. G. 4 1990 Some applications of geometric theory of approximations. Zbl 1477.41015 Tsar’kov, I. G. 4 2020 Uniformly and locally convex asymmetric spaces. Zbl 1494.46012 Tsarkov, I. G. 4 2022 Uniformly and locally convex asymmetric spaces. Zbl 1531.41033 Tsar’kov, Igor’ G. 4 2022 Metric max-distance function in max-approximation problems. Zbl 1423.41054 Tsar’kov, I. G. 3 2019 Compact and weakly compact Tchebycheff sets in normed linear spaces. Zbl 0708.46022 Tsar’kov, I. G. 3 1990 Approximative compactness and nonuniqueness in variational problems, and applications to differential equations. Zbl 1235.46075 Tsar’kov, I. G. 3 2011 Properties of Chebyshev generalized rational fractions in \(L_1\). Zbl 1528.41031 Tsar’kov, I. G. 3 2022 Connectedness in asymmetric spaces. Zbl 1528.41102 Tsar’kov, I. G. 3 2023 Continuity of a metric function and projection in asymmetric spaces. Zbl 1504.46018 Tsar’kov, I. G. 3 2022 \( \theta \)-metric function in the problem of minimization of functionals. Zbl 1537.41025 Tsar’kov, Igor’ G. 3 2024 Right inverse operators and \(\varepsilon\)-selections. Zbl 0890.47002 Tsar’kov, I. G. 2 1995 Properties of monotone connected sets. Zbl 1479.46018 Tsar’kov, I. G. 2 2021 Exposition of the lectures by S. B. Stechkin on approximation theory. Zbl 1277.41001 Arestov, V. V.; Berdyshev, V. I.; Chernykh, N. I.; Demina, T. V.; Kholschevnikova, N. N.; Konyagin, S. V.; Subbotin, Yu. N.; Telyakovskii, S. A.; Tsar’kov, I. G.; Yudin, V. A. 2 2011 Compact and weakly compact Chebyshev sets in linear normed spaces. Zbl 0695.46004 Tsar’kov, I. G. 2 1989 Stability of unique solvability of quasilinear equations given additional data. Zbl 1285.35041 Tsar’kov, I. G. 2 2011 Chebyshev sets with piecewise continuous metric projection. Zbl 1520.41008 Tsar’kov, I. G. 2 2023 Continuous selections of set-valued mappings and approximation in asymmetric and semilinear spaces. Zbl 1532.41034 Tsar’kov, I. G. 2 2023 Local smoothing of uniformly smooth maps. Zbl 1113.46035 Tsar’kov, I. G. 2 2006 Chebyshev unions of planes, and their approximative and geometric properties. Zbl 1544.46010 Alimov, A. R.; Tsar’kov, I. G. 2 2024 Kuhn-Tucker type theorems in cone and linear normed spaces. Zbl 1537.49026 Tsar’kov, I. G. 2 2023 Weakly monotone sets and continuous selection from a near-best approximation operator. Zbl 1423.41043 Tsar’kov, I. G. 1 2018 Linear methods in some smoothing problems. Zbl 0837.41006 Tsar’kov, I. G. 1 1994 On smooth selections from sets of almost Chebyshev centers. Zbl 0908.41016 Tsarkov, I. G. 1 1996 Smoothing of abstract functions. Zbl 0854.46038 Tsar’kov, I. G. 1 1994 On smooth samplings from the sets of almost Chebyshev centres. Zbl 0881.41022 Tsarkov, I. G. 1 1996 Local approximation properties of sets and continuous selections on them. Zbl 1436.41020 Tsar’kov, I. G. 1 2019 On \(\varepsilon\)-samples. Zbl 0911.46012 Tsar’kov, I. G. 1 1996 On smoothing of mappings in normed spaces. Zbl 0665.46030 Konyagin, S. V.; Tsar’kov, I. G. 1 1988 On compact and weakly compact Tchebycheff sets in normed linear spaces. Zbl 0663.46009 Tsar’kov, I. G. 1 1988 Stability of the unique solvability for some differential equations. Zbl 1312.35085 Tsar’kov, I. G. 1 2009 Bounded Chebyshev sets in infinite-dimensional Banach spaces. Zbl 0546.41030 Tsar’kov, I. G. 1 1984 Estimates of the Chebyshev radius in terms of the MAX-metric function and the MAX-projection operator. Zbl 1528.46012 Tsar’kov, I. G. 1 2023 Density of the points of continuity of the metric function and projection in asymmetric spaces. Zbl 1535.46020 Tsarkov, I. G. 1 2022 Classical problems of rational approximation. Zbl 1528.41073 Alimov, A. R.; Tsar’kov, I. G. 1 2022 Max-solar properties of sets in normed and asymmetrically normed spaces. Zbl 1515.41020 Alimov, Alexey R.; Tsar’kov, Igor’ G. 1 2023 Smoothness of solutions of the eikonal equation and regular points of their level surfaces. Zbl 1519.41011 Tsar’kov, I. G. 1 2023 Approximative and structural properties of sets in asymmetric spaces. Zbl 1531.41034 Tsar’kov, Igor’ G. 1 2022 Chebyshev sets that are unions of planes. Zbl 07945460 Alimov, Alexey R.; Tsar’kov, Igor’ G. 1 2024 \( \theta \)-metric function in the problem of minimization of functionals. Zbl 1537.41025 Tsar’kov, Igor’ G. 3 2024 Chebyshev unions of planes, and their approximative and geometric properties. Zbl 1544.46010 Alimov, A. R.; Tsar’kov, I. G. 2 2024 Chebyshev sets that are unions of planes. Zbl 07945460 Alimov, Alexey R.; Tsar’kov, Igor’ G. 1 2024 Existence, uniqueness, and stability of best and near-best approximations. Zbl 1534.41017 Alimov, Alexey R.; Ryutin, Konstantin S.; Tsar’kov, Igor G. 6 2023 Connectedness in asymmetric spaces. Zbl 1528.41102 Tsar’kov, I. G. 3 2023 Chebyshev sets with piecewise continuous metric projection. Zbl 1520.41008 Tsar’kov, I. G. 2 2023 Continuous selections of set-valued mappings and approximation in asymmetric and semilinear spaces. Zbl 1532.41034 Tsar’kov, I. G. 2 2023 Kuhn-Tucker type theorems in cone and linear normed spaces. Zbl 1537.49026 Tsar’kov, I. G. 2 2023 Estimates of the Chebyshev radius in terms of the MAX-metric function and the MAX-projection operator. Zbl 1528.46012 Tsar’kov, I. G. 1 2023 Max-solar properties of sets in normed and asymmetrically normed spaces. Zbl 1515.41020 Alimov, Alexey R.; Tsar’kov, Igor’ G. 1 2023 Smoothness of solutions of the eikonal equation and regular points of their level surfaces. Zbl 1519.41011 Tsar’kov, I. G. 1 2023 Geometric approximation theory. Zbl 1494.41001 Alimov, Alexey R.; Tsar’kov, Igor’ G. 18 2022 Ball-complete sets and solar properties of sets in asymmetric spaces. Zbl 1506.46016 Alimov, Alexey R.; Tsar’kov, Igor’ G. 16 2022 Suns, moons, and \(\mathring{B}\)-complete sets in asymmetric spaces. Zbl 1515.41019 Alimov, Alexey R.; Tsar’kov, Igor’ G. 13 2022 \(\mathring{B}\)-complete sets: approximative and structural properties. Zbl 1506.46017 Alimov, A. R.; Tsarkov, I. G. 13 2022 Some classical problems of geometric approximation theory in asymmetric spaces. Zbl 1522.46012 Alimov, A. R.; Tsar’kov, I. G. 8 2022 Geometry of the singular set of hypersurfaces and the eikonal equation. Zbl 1507.35080 Tsar’kov, I. G. 7 2022 Solarity and proximinality in generalized rational approximation in spaces \(C(Q)\) and \(L^p\). Zbl 1525.41007 Alimov, A. R.; Tsar’kov, I. G. 6 2022 Solarity and connectedness of sets in the space \(C[a,b]\) and in finite-dimensional polyhedral spaces. Zbl 1502.41013 Tsar’kov, I. G. 6 2022 Uniformly and locally convex asymmetric spaces. Zbl 1494.46012 Tsarkov, I. G. 4 2022 Uniformly and locally convex asymmetric spaces. Zbl 1531.41033 Tsar’kov, Igor’ G. 4 2022 Properties of Chebyshev generalized rational fractions in \(L_1\). Zbl 1528.41031 Tsar’kov, I. G. 3 2022 Continuity of a metric function and projection in asymmetric spaces. Zbl 1504.46018 Tsar’kov, I. G. 3 2022 Density of the points of continuity of the metric function and projection in asymmetric spaces. Zbl 1535.46020 Tsarkov, I. G. 1 2022 Classical problems of rational approximation. Zbl 1528.41073 Alimov, A. R.; Tsar’kov, I. G. 1 2022 Approximative and structural properties of sets in asymmetric spaces. Zbl 1531.41034 Tsar’kov, Igor’ G. 1 2022 Uniform convexity in nonsymmetric spaces. Zbl 1489.46022 Tsar’kov, I. G. 16 2021 Properties of monotone path-connected sets. Zbl 1466.41017 Tsar’kov, Igor’ G. 12 2021 Properties of suns in the spaces \(L^1\) and \(C(Q)\). Zbl 1487.41042 Tsar’kov, I. G. 9 2021 Approximatively compact sets in asymmetric Efimov-Stechkin spaces and convexity of almost suns. Zbl 1489.41020 Alimov, A. R.; Tsar’kov, I. G. 8 2021 Smoothness of subspace sections of the unit balls of \(C(Q)\) and \(L^1\). Zbl 1464.46022 Alimov, A. R.; Tsar’kov, I. G. 7 2021 Properties of monotone connected sets. Zbl 1479.46018 Tsar’kov, I. G. 2 2021 Approximative properties of sets and continuous selections. Zbl 1455.54019 Tsar’kov, Igor’ G. 21 2020 The geometry of a singular set of hypersurfaces and the eikonal equation. Zbl 1451.35060 Tsar’kov, I. G. 6 2020 Some applications of geometric theory of approximations. Zbl 1477.41015 Tsar’kov, I. G. 4 2020 Weakly monotone sets and continuous selection in asymmetric spaces. Zbl 1428.41042 Tsar’kov, Igor’ G. 20 2019 Chebyshev centres, Jung constants, and their applications. Zbl 1435.41028 Alimov, A. R.; Tsar’kov, I. G. 18 2019 Smooth solutions of the eikonal equation and the behaviour of local minima of the distance function. Zbl 1429.41034 Tsar’kov, Igor’ G. 6 2019 Metric max-distance function in max-approximation problems. Zbl 1423.41054 Tsar’kov, I. G. 3 2019 Local approximation properties of sets and continuous selections on them. Zbl 1436.41020 Tsar’kov, I. G. 1 2019 Continuous selections for metric projection operators and for their generalizations. Zbl 1410.46007 Tsar’kov, I. G. 16 2018 Continuous selections in asymmetric spaces. Zbl 1437.54017 Tsar’kov, I. G. 14 2018 New criteria for the existence of a continuous \(\epsilon\)-selection. Zbl 1408.41021 Tsar’kov, I. G. 5 2018 Weakly monotone sets and continuous selection from a near-best approximation operator. Zbl 1423.41043 Tsar’kov, I. G. 1 2018 Singular sets of surfaces. Zbl 1386.46019 Tsar’kov, I. G. 10 2017 Properties of \(C^1\)-solutions to the eikonal equation. Zbl 1373.35088 Tsar’kov, I. G. 7 2017 Continuous selection for set-valued mappings. Zbl 1376.54021 Tsar’kov, Igor G. 7 2017 Continuous \(\epsilon\)-selection and monotone path-connected sets. Zbl 1376.41028 Tsar’kov, I. G. 7 2017 Continuous selection from the sets of best and near-best approximation. Zbl 1401.41023 Tsar’kov, I. G. 5 2017 Connectedness and solarity in problems of best and near-best approximation. Zbl 1350.41031 Alimov, A. R.; Tsar’kov, I. G. 70 2016 Connectedness and other geometric properties of suns and Chebyshev sets. Zbl 1361.46012 Alimov, Alexey R.; Tsar’kov, I. G. 20 2016 Local and global continuous \( \varepsilon\)-selection. Zbl 1356.46013 Tsar’kov, Igor G. 19 2016 Continuous \(\varepsilon\)-selection. Zbl 1347.41047 Tsar’kov, I. G. 17 2016 Properties of sets admitting stable \(\varepsilon \)-selections. Zbl 1245.49024 Tsar’kov, I. G. 13 2011 Approximative compactness and nonuniqueness in variational problems, and applications to differential equations. Zbl 1235.46075 Tsar’kov, I. G. 3 2011 Exposition of the lectures by S. B. Stechkin on approximation theory. Zbl 1277.41001 Arestov, V. V.; Berdyshev, V. I.; Chernykh, N. I.; Demina, T. V.; Kholschevnikova, N. N.; Konyagin, S. V.; Subbotin, Yu. N.; Telyakovskii, S. A.; Tsar’kov, I. G.; Yudin, V. A. 2 2011 Stability of unique solvability of quasilinear equations given additional data. Zbl 1285.35041 Tsar’kov, I. G. 2 2011 Stability of the unique solvability for some differential equations. Zbl 1312.35085 Tsar’kov, I. G. 1 2009 Local smoothing of uniformly smooth maps. Zbl 1113.46035 Tsar’kov, I. G. 2 2006 Nonunique solvability of certain differential equations and their connection with geometric approximation theory. Zbl 1110.47313 Tsar’kov, I. G. 9 2004 Extension of the Hilbert-valued Lipschitz mappings. Zbl 0965.46047 Tsar’kov, I. G. 5 1999 Convexity and connectedness of Chebyshev sets and sums. Zbl 0951.41017 Karlov, M. I.; Tsar’kov, I. G. 6 1997 On smooth selections from sets of almost Chebyshev centers. Zbl 0908.41016 Tsarkov, I. G. 1 1996 On smooth samplings from the sets of almost Chebyshev centres. Zbl 0881.41022 Tsarkov, I. G. 1 1996 On \(\varepsilon\)-samples. Zbl 0911.46012 Tsar’kov, I. G. 1 1996 Right inverse operators and \(\varepsilon\)-selections. Zbl 0890.47002 Tsar’kov, I. G. 2 1995 Linear methods in some smoothing problems. Zbl 0837.41006 Tsar’kov, I. G. 1 1994 Smoothing of abstract functions. Zbl 0854.46038 Tsar’kov, I. G. 1 1994 On global existence of an implicit function. Zbl 0824.58010 Tsar’kov, I. G. 5 1993 Smoothing of uniformly continuous mappings in \(L_ p\) spaces. Zbl 0821.46037 Tsar’kov, I. G. 4 1993 Properties of sets that have a continuous selection of the operator \(P^{\delta}\). Zbl 0729.46011 Tsar’kov, I. G. 13 1990 Continuity of the metric projection, structural and approximate properties of sets. Zbl 0703.46010 Tsar’kov, I. G. 7 1990 Continuity of the metric projection, structural and approximate properties of sets. Zbl 0695.46003 Tsar’kov, I. G. 4 1990 Compact and weakly compact Tchebycheff sets in normed linear spaces. Zbl 0708.46022 Tsar’kov, I. G. 3 1990 Local “homogeneity” of sets of uniqueness. Zbl 0694.46019 Tsarkov, I. G. 7 1989 Compact and weakly compact Chebyshev sets in linear normed spaces. Zbl 0695.46004 Tsar’kov, I. G. 2 1989 On smoothing of mappings in normed spaces. Zbl 0665.46030 Konyagin, S. V.; Tsar’kov, I. G. 1 1988 On compact and weakly compact Tchebycheff sets in normed linear spaces. Zbl 0663.46009 Tsar’kov, I. G. 1 1988 Relations between certain classes of sets in Banach spaces. Zbl 0625.46017 Tsar’kov, I. G. 17 1986 Efimov-Stechkin spaces. Zbl 0636.46016 Konyagin, S. V.; Tsar’kov, I. G. 6 1986 Bounded Chebyshev sets in finite-dimensional Banach spaces. Zbl 0602.41033 Tsar’kov, I. G. 6 1984 Bounded Chebyshev sets in infinite-dimensional Banach spaces. Zbl 0546.41030 Tsar’kov, I. G. 1 1984 all cited Publications top 5 cited Publications all top 5 Cited by 86 Authors 52 Tsar’kov, Igor’ Germanovich 39 Alimov, Alexey R. 4 Arutyunov, Aram Vladimirovic 4 Lebedev, Pavel Dmitrievich 4 Shchepin, Evgeniĭ Vital’evich 3 Bednov, Borislav Borisovich 3 Shklyaev, Konstantin S. 3 Uspenskiĭ, Aleksandr Aleksandrovich 3 Varga, Csaba György 3 Yasinskij, V. K. 2 Balashov, Maxim Viktorovich 2 Balestro, Vitor 2 Borodin, Petr A. 2 Breckner, Brigitte Erika 2 Dai, Duanxu 2 Martini, Horst 2 Ricceri, Biagio 2 Savinova, E. A. 1 Alchekov, A. K. 1 Alvoni, Elisabetta 1 Antonyuk, Svitlana V. 1 Bandyopadhyaya, Pradipta 1 Braichev, Georgiĭ Genrikhovich 1 Calderon, Carlos 1 Castellani, Marco 1 Chelidze, George Z. 1 Cotrina, John 1 Danelia, A. N. 1 Daptari, Soumitra 1 Deikalova, Marina Valer’evna 1 Fang, Quanqing 1 Faraci, Francesca 1 Garg, Shelly 1 Giuli, Massimiliano 1 Grover, Harpreet K. 1 Horváth, Alexandru 1 Iannizzotto, Antonio 1 Jiang, Yan 1 Jiménez-Sevilla, Mar 1 Khabibullin, Bulat Nurmievich 1 Korolyuk, Volodymyr Semenovych 1 Korotkiĭ, Aleksandr Illarionovich 1 Levis, Fabián Eduardo 1 Li, Chong 1 Lisei, Hannelore 1 Liu, Luofei 1 Luo, Xianfa 1 Malyk, Igor V. 1 Malyka, I. V. 1 Malysheva, O. S. 1 Martínez-Legaz, Juan-Enrique 1 Martinón, Antonio 1 Marudai, Muthiah 1 Mordukhovich, Boris S. 1 Naor, Assaf 1 Narang, Tulsi Das 1 Nath, Triloki 1 Nikonorov, Yurii Gennadyevich 1 Nikonorova, Yulia V. 1 Papini, Pier Luigi 1 Park, Choonkil 1 Paul, Tanmoy 1 Peng, Lihui 1 Peres, Yuval 1 Poloskov, Igor Egorovich 1 Poonguzali, G. 1 Repovš, Dušan D. 1 Ridolfi, Claudia V. 1 Roy, Ashoke K. 1 Ryutin, Konstantin S. 1 Sánchez-González, Luis 1 Schramm, Oded 1 Sheffield, Scott 1 Sherstyukov, Vladimir Borisovich 1 Subbotin, Yuriĭ Nikolaevich 1 Suladze, M. Z. 1 Sun, Longfa 1 Teixeira, Ralph Costa 1 Tikhomirov, Vladimir Mikhaĭlovich 1 Torgashova, Anastasiya Yu. 1 Ushakov, Vladimir Nikolaevich 1 Vestfrid, Igor A. 1 Yao, Jen-Chih 1 Zabala, L. 1 Zhang, Jichao 1 Zheng, Bentuo all top 5 Cited in 42 Serials 21 Mathematical Notes 13 Russian Journal of Mathematical Physics 8 Sbornik: Mathematics 6 Journal of Mathematical Analysis and Applications 6 Russian Mathematical Surveys 6 Journal of Mathematical Sciences (New York) 6 Izvestiya: Mathematics 6 Proceedings of the Steklov Institute of Mathematics 5 Journal of Approximation Theory 5 Lobachevskii Journal of Mathematics 4 Doklady Mathematics 3 Moscow University Mathematics Bulletin 3 Results in Mathematics 3 Cybernetics and Systems Analysis 3 Journal of Convex Analysis 2 Siberian Mathematical Journal 2 The Journal of Analysis 2 Differential Equations 2 Set-Valued and Variational Analysis 2 Ufimskiĭ Matematicheskiĭ Zhurnal 2 Chelyabinskiĭ Fiziko-Matematicheskiĭ Zhurnal 1 Ukrainian Mathematical Journal 1 Prikladnaya Matematika i Mekhanika 1 Duke Mathematical Journal 1 Functional Analysis and its Applications 1 Journal of Optimization Theory and Applications 1 Mathematische Annalen 1 Nonlinear Analysis. Theory, Methods & Applications. Series A: Theory and Methods 1 Numerical Functional Analysis and Optimization 1 Acta Mathematica Hungarica 1 Optimization 1 Journal of Global Optimization 1 Indagationes Mathematicae. New Series 1 Infinite Dimensional Analysis, Quantum Probability and Related Topics 1 Acta Mathematica Sinica. English Series 1 Proceedings of Institute of Mathematics and Mechanics. National Academy of Sciences of Azerbaijan 1 Journal of Fixed Point Theory and Applications 1 Annals of Functional Analysis 1 Eurasian Mathematical Journal 1 Iranian Journal of Mathematical Sciences and Informatics 1 Journal of Applied Analysis and Computation 1 Vestnik Rossiĭskikh Universitetov. Matematika all top 5 Cited in 26 Fields 87 Approximations and expansions (41-XX) 63 Functional analysis (46-XX) 37 General topology (54-XX) 13 Convex and discrete geometry (52-XX) 12 Operator theory (47-XX) 11 Calculus of variations and optimal control; optimization (49-XX) 7 Partial differential equations (35-XX) 6 Probability theory and stochastic processes (60-XX) 4 Differential geometry (53-XX) 3 Numerical analysis (65-XX) 3 Optics, electromagnetic theory (78-XX) 2 History and biography (01-XX) 2 Group theory and generalizations (20-XX) 2 Real functions (26-XX) 2 Measure and integration (28-XX) 2 Functions of a complex variable (30-XX) 2 Several complex variables and analytic spaces (32-XX) 2 Ordinary differential equations (34-XX) 2 Global analysis, analysis on manifolds (58-XX) 2 Operations research, mathematical programming (90-XX) 1 Combinatorics (05-XX) 1 Geometry (51-XX) 1 Algebraic topology (55-XX) 1 Mechanics of deformable solids (74-XX) 1 Game theory, economics, finance, and other social and behavioral sciences (91-XX) 1 Systems theory; control (93-XX) Citations by Year Wikidata Timeline The data are displayed as stored in Wikidata under a Creative Commons CC0 License. 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