Díaz-González, Abel; Pijeira-Cabrera, Héctor; Quintero-Roba, Javier Polynomials of least deviation from zero in Sobolev \(p\)-norm. (English) Zbl 07493947 Bull. Malays. Math. Sci. Soc. (2) 45, No. 2, 889-912 (2022). Reviewer: Marcel G. de Bruin (Heemstede) MSC: 30C10 30C15 33C47 41A10 41A50 41A52 46E35 PDF BibTeX XML Cite \textit{A. Díaz-González} et al., Bull. Malays. Math. Sci. Soc. (2) 45, No. 2, 889--912 (2022; Zbl 07493947) Full Text: DOI arXiv OpenURL
Wójcik, Paweł Vertices of the unit ball of subspaces in \(\mathcal{L}(H)\) and strong unicity of best approximation in \(\mathcal{L}(l_2^2)\). (English) Zbl 07425717 Linear Algebra Appl. 632, 281-293 (2022). MSC: 46B20 41A35 41A52 41A65 47A58 PDF BibTeX XML Cite \textit{P. Wójcik}, Linear Algebra Appl. 632, 281--293 (2022; Zbl 07425717) Full Text: DOI OpenURL
Sarvari, Ali Asghar; Mazaheri, Hamid; Khademzadeh, Hamid Reza The best proximity pair focusing on monotonicity and \(T\)-absolutely direct sets. (English) Zbl 1481.41018 J. Math. Ext. 15, No. 1, 15-27 (2021). MSC: 41A65 41A52 PDF BibTeX XML Cite \textit{A. A. Sarvari} et al., J. Math. Ext. 15, No. 1, 15--27 (2021; Zbl 1481.41018) Full Text: Link OpenURL
Kopaliani, Tengiz; Samashvili, Nino; Zviadadze, Shalva Extension of the best polynomial approximation operator in Musielak-Orlicz spaces. (English) Zbl 07393055 Publ. Math. 99, No. 1-2, 101-115 (2021). Reviewer: Ioan Raşa (Cluj-Napoca) MSC: 41A10 41A50 41A52 PDF BibTeX XML Cite \textit{T. Kopaliani} et al., Publ. Math. 99, No. 1--2, 101--115 (2021; Zbl 07393055) Full Text: DOI OpenURL
Grover, Priyanka; Singla, Sushil Best approximations, distance formulas and orthogonality in \(C^*\)-algebras. (English) Zbl 1480.46069 J. Ramanujan Math. Soc. 36, No. 1, 85-91 (2021). MSC: 46L05 46L08 41A65 46B20 41A52 PDF BibTeX XML Cite \textit{P. Grover} and \textit{S. Singla}, J. Ramanujan Math. Soc. 36, No. 1, 85--91 (2021; Zbl 1480.46069) Full Text: arXiv Link OpenURL
Floater, Michael S.; Manni, Carla; Sande, Espen; Speleers, Hendrik Best low-rank approximations and Kolmogorov \(n\)-widths. (English) Zbl 07331676 SIAM J. Matrix Anal. Appl. 42, No. 1, 330-350 (2021). MSC: 65F55 41A50 41A52 PDF BibTeX XML Cite \textit{M. S. Floater} et al., SIAM J. Matrix Anal. Appl. 42, No. 1, 330--350 (2021; Zbl 07331676) Full Text: DOI arXiv OpenURL
Kozlowski, Wojciech M. (Walter) On modular approximants in sequential convergence spaces. (English) Zbl 1462.41015 J. Approx. Theory 264, Article ID 105535, 14 p. (2021). Reviewer: Stefan Cobzaş (Cluj-Napoca) MSC: 41A65 41A52 46A19 46A80 46B20 54A20 PDF BibTeX XML Cite \textit{W. M. Kozlowski}, J. Approx. Theory 264, Article ID 105535, 14 p. (2021; Zbl 1462.41015) Full Text: DOI OpenURL
Caseiro, Raquel; Facas Vicente, M. A.; Vitória, José Projection of a point onto the intersection of spheres in linear varieties. (English) Zbl 1469.51020 Linear Algebra Appl. 610, 40-51 (2021). Reviewer: Georgi Hristov Georgiev (Shumen) MSC: 51N20 41A50 41A52 51M05 PDF BibTeX XML Cite \textit{R. Caseiro} et al., Linear Algebra Appl. 610, 40--51 (2021; Zbl 1469.51020) Full Text: DOI OpenURL
Martynov, O. M. Constants of strong uniqueness of minimal projections onto some \(n\)-dimensional subspaces of \(l_\infty^{2n}$ ($n \geq 2$). (English) Zbl 1468.41012 J. Approx. Theory 262, Article ID 105507, 8 p. (2021). MSC: 41A52 41A65 46B20 47B37 PDF BibTeX XML Cite \textit{O. M. Martynov}, J. Approx. Theory 262, Article ID 105507, 8 p. (2021; Zbl 1468.41012) Full Text: DOI OpenURL
Ahmed, Talal; Raja, Haroon; Bajwa, Waheed U. Tensor regression using low-rank and sparse Tucker decompositions. (English) Zbl 07482293 SIAM J. Math. Data Sci. 2, No. 4, 944-966 (2020). MSC: 41A52 41A63 62F10 62J05 PDF BibTeX XML Cite \textit{T. Ahmed} et al., SIAM J. Math. Data Sci. 2, No. 4, 944--966 (2020; Zbl 07482293) Full Text: DOI arXiv OpenURL
Abu-Sirhan, Eyad Pointwise best coapproximation in the space of Bochner integrable functions. (English) Zbl 07473689 J. Numer. Anal. Approx. Theory 49, No. 2, 95-99 (2020). MSC: 41A50 41A52 41A65 PDF BibTeX XML Cite \textit{E. Abu-Sirhan}, J. Numer. Anal. Approx. Theory 49, No. 2, 95--99 (2020; Zbl 07473689) OpenURL
Fallahi, Kamal; Rad, Ghasem Soleimani Best proximity points theorem in \(b\)-metric spaces endowed with a graph. (English) Zbl 07285138 Fixed Point Theory 21, No. 2, 465-474 (2020). MSC: 47H10 41A52 41A65 05C40 PDF BibTeX XML Cite \textit{K. Fallahi} and \textit{G. S. Rad}, Fixed Point Theory 21, No. 2, 465--474 (2020; Zbl 07285138) Full Text: Link OpenURL
Arestov, V. V. Best uniform approximation of the differentiation operator by operators bounded in the space \(L_2\). (English. Russian original) Zbl 1472.41013 Proc. Steklov Inst. Math. 308, Suppl. 1, 9-30 (2020); translation from Tr. Inst. Mat. Mekh. (Ekaterinburg) 24, No. 4, 34-56 (2018). Reviewer: Vijay Gupta (New Delhi) MSC: 41A50 41A52 PDF BibTeX XML Cite \textit{V. V. Arestov}, Proc. Steklov Inst. Math. 308, 9--30 (2020; Zbl 1472.41013); translation from Tr. Inst. Mat. Mekh. (Ekaterinburg) 24, No. 4, 34--56 (2018) Full Text: DOI OpenURL
Qi, Yang; Michałek, Mateusz; Lim, Lek-Heng Complex best \(r\)-term approximations almost always exist in finite dimensions. (English) Zbl 1483.41010 Appl. Comput. Harmon. Anal. 49, No. 1, 180-207 (2020). MSC: 41A46 15A69 30E10 41A52 PDF BibTeX XML Cite \textit{Y. Qi} et al., Appl. Comput. Harmon. Anal. 49, No. 1, 180--207 (2020; Zbl 1483.41010) Full Text: DOI arXiv OpenURL
Tkachenko, M. Ye.; Traktynska, V. M. The uniqueness of the best non-symmetric \(L_1\)-approximant with a weight for continuous functions with values in KB-space. (English) Zbl 07437683 Res. Math. 27, No. 1, 67-74 (2019). MSC: 41A52 41A65 46B40 PDF BibTeX XML Cite \textit{M. Ye. Tkachenko} and \textit{V. M. Traktynska}, Res. Math. 27, No. 1, 67--74 (2019; Zbl 07437683) Full Text: DOI OpenURL
Gupta, Sahil; Narang, Tulsi Dass Best coapproximation in quotient spaces. (English) Zbl 1455.41007 Iran. J. Math. Sci. Inform. 14, No. 1, 13-20 (2019). MSC: 41A50 41A52 41A65 PDF BibTeX XML Cite \textit{S. Gupta} and \textit{T. D. Narang}, Iran. J. Math. Sci. Inform. 14, No. 1, 13--20 (2019; Zbl 1455.41007) Full Text: Link OpenURL
Li, Yaxu; Wen, Jinming; Xian, Jun Reconstruction from convolution random sampling in local shift invariant spaces. (English) Zbl 1479.94090 Inverse Probl. 35, No. 12, Article ID 125008, 15 p. (2019). Reviewer: Jianbin Yang (Nanjing) MSC: 94A20 41A50 41A52 42C40 42C15 42A85 PDF BibTeX XML Cite \textit{Y. Li} et al., Inverse Probl. 35, No. 12, Article ID 125008, 15 p. (2019; Zbl 1479.94090) Full Text: DOI OpenURL
Wójcik, Paweł Extensions of linear operators from hyperplanes and strong uniqueness of best approximation in \(\mathcal{L}(X, W)\). (English) Zbl 1428.46013 J. Approx. Theory 246, 28-42 (2019). Reviewer: Francisco Pérez Acosta (La Laguna) MSC: 46B20 41A52 41A65 PDF BibTeX XML Cite \textit{P. Wójcik}, J. Approx. Theory 246, 28--42 (2019; Zbl 1428.46013) Full Text: DOI OpenURL
Caseiro, R.; Facas Vicente, M. A.; Vitória, José Projection method and the distance between two linear varieties. (English) Zbl 1408.51026 Linear Algebra Appl. 563, 446-460 (2019). MSC: 51N20 41A50 41A52 51M16 PDF BibTeX XML Cite \textit{R. Caseiro} et al., Linear Algebra Appl. 563, 446--460 (2019; Zbl 1408.51026) Full Text: DOI OpenURL
González Merino, Bernardo; Jahn, Thomas; Richter, Christian Uniqueness of circumcenters in generalized Minkowski spaces. (English) Zbl 1402.52003 J. Approx. Theory 237, 153-159 (2019). MSC: 52A20 41A28 41A52 41A65 52A21 52A40 PDF BibTeX XML Cite \textit{B. González Merino} et al., J. Approx. Theory 237, 153--159 (2019; Zbl 1402.52003) Full Text: DOI arXiv OpenURL
Shang, Xiaolin; Zhang, Lan The anti-reflexive solution of the inverse quadratic eigenvalue problem and its optimal approximation. (Chinese. English summary) Zbl 1438.15046 Chin. J. Eng. Math. 35, No. 5, 579-587 (2018). MSC: 15A29 15A18 15A09 41A52 PDF BibTeX XML Cite \textit{X. Shang} and \textit{L. Zhang}, Chin. J. Eng. Math. 35, No. 5, 579--587 (2018; Zbl 1438.15046) Full Text: DOI OpenURL
Antezana, Jorge; Chiumiento, Eduardo Approximation by partial isometries and symmetric approximation of finite frames. (English) Zbl 1421.42016 J. Fourier Anal. Appl. 24, No. 4, 1098-1118 (2018). Reviewer: Lucian Coroianu (Oradea) MSC: 42C15 41A29 41A52 15A18 PDF BibTeX XML Cite \textit{J. Antezana} and \textit{E. Chiumiento}, J. Fourier Anal. Appl. 24, No. 4, 1098--1118 (2018; Zbl 1421.42016) Full Text: DOI arXiv OpenURL
Baseri, Marzieh Ahmadi; Mazaheri, H.; Narang, T. D. Some results on convergence and existence of best proximity points. (English) Zbl 1408.41027 J. Mahani Math. Res. Cent. 7, No. 1, 13-24 (2018). MSC: 41A65 41A52 46N10 PDF BibTeX XML Cite \textit{M. A. Baseri} et al., J. Mahani Math. Res. Cent. 7, No. 1, 13--24 (2018; Zbl 1408.41027) Full Text: DOI OpenURL
Haddadi, M. R. Existence and convergence theorems for best proximity points. (English) Zbl 1379.41029 Asian-Eur. J. Math. 11, No. 1, Article ID 1850005, 7 p. (2018). MSC: 41A52 41A65 PDF BibTeX XML Cite \textit{M. R. Haddadi}, Asian-Eur. J. Math. 11, No. 1, Article ID 1850005, 7 p. (2018; Zbl 1379.41029) Full Text: DOI OpenURL
Shams Abad, S. M. Mousavi; Mazaheri, H.; Dehghan, M. A. Proximinality and remotality in normed linear spaces. (English) Zbl 1408.41032 J. Mahani Math. Res. Cent. 6, No. 2, 73-80 (2017). MSC: 41A65 41A52 46N10 PDF BibTeX XML Cite \textit{S. M. M. Shams Abad} et al., J. Mahani Math. Res. Cent. 6, No. 2, 73--80 (2017; Zbl 1408.41032) Full Text: DOI OpenURL
Baseri, M. Ahmadi; Mazaheri, H. Best proximity points for semi-cyclic contraction pairs in regular cone metric spaces. (English) Zbl 1381.41030 Math. Sci. Appl. E-Notes 5, No. 2, 36-44 (2017). MSC: 41A65 41A52 46N10 PDF BibTeX XML Cite \textit{M. A. Baseri} and \textit{H. Mazaheri}, Math. Sci. Appl. E-Notes 5, No. 2, 36--44 (2017; Zbl 1381.41030) OpenURL
Narang, T. D. Strongly proximinal sets are convex. (English) Zbl 1374.41049 Palest. J. Math. 6, Spec. Iss. II, 186-189 (2017). MSC: 41A50 41A52 41A65 PDF BibTeX XML Cite \textit{T. D. Narang}, Palest. J. Math. 6, 186--189 (2017; Zbl 1374.41049) Full Text: Link OpenURL
Gajny, Laurent; Gibaru, Olivier; Nyiri, Eric; Fang, Shu-Cherng Best \(L_{1}\) approximation of Heaviside-type functions from Chebyshev and weak-Chebyshev spaces. (English) Zbl 1379.41025 Numer. Algorithms 75, No. 3, 827-843 (2017). Reviewer: Michael M. Pahirya (Mukachevo) MSC: 41A50 41A10 41A52 PDF BibTeX XML Cite \textit{L. Gajny} et al., Numer. Algorithms 75, No. 3, 827--843 (2017; Zbl 1379.41025) Full Text: DOI arXiv OpenURL
Narang, T. D.; Gupta, Sahil Best approximation in metric spaces. (English) Zbl 1369.41032 Fasc. Math. 58, 113-121 (2017). MSC: 41A50 41A52 41A65 PDF BibTeX XML Cite \textit{T. D. Narang} and \textit{S. Gupta}, Fasc. Math. 58, 113--121 (2017; Zbl 1369.41032) Full Text: DOI OpenURL
Dryanov, Dimiter Best approximation by logarithmically concave classes of functions. (English) Zbl 1369.41024 Govil, Narenda Kumar (ed.) et al., Progress in approximation theory and applicable complex analysis. In memory of Q.I. Rahman. Cham: Springer (ISBN 978-3-319-49240-7/hbk; 978-3-319-49242-1/ebook). Springer Optimization and Its Applications 117, 317-339 (2017). MSC: 41A30 41A10 41A50 41A52 PDF BibTeX XML Cite \textit{D. Dryanov}, Springer Optim. Appl. 117, 317--339 (2017; Zbl 1369.41024) Full Text: DOI OpenURL
Wójcik, Paweł Generalized daugavet equations, affine operators and unique best approximation. (English) Zbl 06733949 Stud. Math. 238, No. 3, 235-247 (2017). MSC: 47L25 47A50 41A52 46B20 41A35 PDF BibTeX XML Cite \textit{P. Wójcik}, Stud. Math. 238, No. 3, 235--247 (2017; Zbl 06733949) Full Text: DOI OpenURL
Jamjoom, Fatmah B.; Peralta, Antonio M.; Siddiqui, Akhlaq A.; Tahlawi, Haifa M. Inner ideals, compact tripotents and Chebyshev subtriples of \(\mathrm{JB}^*\)-triples and \(\mathrm C^*\)-algebras. (English) Zbl 1356.41013 Rev. R. Acad. Cienc. Exactas Fís. Nat., Ser. A Mat., RACSAM 111, No. 1, 129-138 (2017). MSC: 41A50 41A52 41A65 46L05 PDF BibTeX XML Cite \textit{F. B. Jamjoom} et al., Rev. R. Acad. Cienc. Exactas Fís. Nat., Ser. A Mat., RACSAM 111, No. 1, 129--138 (2017; Zbl 1356.41013) Full Text: DOI arXiv OpenURL
Gupta, Sahil; Narang, T. D. Best approximation and best coapproximation in metric linear spaces. (English) Zbl 1413.41036 J. Nonlinear Anal. Optim. 7, No. 1, 137-143 (2016). MSC: 41A50 41A52 41A65 PDF BibTeX XML Cite \textit{S. Gupta} and \textit{T. D. Narang}, J. Nonlinear Anal. Optim. 7, No. 1, 137--143 (2016; Zbl 1413.41036) Full Text: Link OpenURL
Ahmadi Baseri, M.; Mazaheri, H.; Narang, T. D. Common best proximity points for cyclic \(\phi\)-contraction maps. (English) Zbl 1386.41011 Int. J. Anal. Appl. 12, No. 1, 1-9 (2016). MSC: 41A65 41A52 46N10 PDF BibTeX XML Cite \textit{M. Ahmadi Baseri} et al., Int. J. Anal. Appl. 12, No. 1, 1--9 (2016; Zbl 1386.41011) Full Text: Link OpenURL
Narang, T. D.; Gupta, Sahil 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 PDF BibTeX XML Cite \textit{T. D. Narang} and \textit{S. Gupta}, Springer Proc. Math. Stat. 186, 339--349 (2016; Zbl 1366.41015) Full Text: DOI OpenURL
Narang, Tulsi Dass; Gupta, Sahil On best approximation and best coapproximation. (English) Zbl 1365.41017 Thai J. Math. 14, No. 2, 505-516 (2016). MSC: 41A50 41A52 41A65 PDF BibTeX XML Cite \textit{T. D. Narang} and \textit{S. Gupta}, Thai J. Math. 14, No. 2, 505--516 (2016; Zbl 1365.41017) Full Text: Link OpenURL
Qi, Yang; Comon, Pierre; Lim, Lek-Heng Semialgebraic geometry of nonnegative tensor rank. (English) Zbl 1349.14183 SIAM J. Matrix Anal. Appl. 37, No. 4, 1556-1580 (2016). MSC: 14P10 15A69 41A50 41A52 PDF BibTeX XML Cite \textit{Y. Qi} et al., SIAM J. Matrix Anal. Appl. 37, No. 4, 1556--1580 (2016; Zbl 1349.14183) Full Text: DOI arXiv OpenURL
Narang, T. D.; Gupta, Sahil On \(\varepsilon\)-coapproximation in quotient spaces. (English) Zbl 1343.41001 Indian J. Math. 58, No. 1, 17-29 (2016). MSC: 41A50 41A52 54B15 PDF BibTeX XML Cite \textit{T. D. Narang} and \textit{S. Gupta}, Indian J. Math. 58, No. 1, 17--29 (2016; Zbl 1343.41001) OpenURL
Ariza-Ruiz, David; Fernández-León, Aurora; López-Acedo, Genaro; Nicolae, Adriana Chebyshev sets in geodesic spaces. (English) Zbl 1347.41037 J. Approx. Theory 207, 265-282 (2016). Reviewer: Daniel Wulbert (La Jolla) MSC: 41A52 41A65 PDF BibTeX XML Cite \textit{D. Ariza-Ruiz} et al., J. Approx. Theory 207, 265--282 (2016; Zbl 1347.41037) Full Text: DOI OpenURL
Friedland, Shmuel Remarks on the symmetric rank of symmetric tensors. (English) Zbl 1382.15040 SIAM J. Matrix Anal. Appl. 37, No. 1, 320-337 (2016). MSC: 15A69 14M15 14P10 41A52 41A65 46B28 PDF BibTeX XML Cite \textit{S. Friedland}, SIAM J. Matrix Anal. Appl. 37, No. 1, 320--337 (2016; Zbl 1382.15040) Full Text: DOI arXiv OpenURL
Johnson, Gordon G. The closure in a Hilbert space of a prehilbert space Chebyshev set that fails to be a Chebyshev set. (English) Zbl 1334.41041 J. Approx. Theory 203, 28-54 (2016). Reviewer: Daniel Wulbert (La Jolla) MSC: 41A52 46B20 41A50 46B45 PDF BibTeX XML Cite \textit{G. G. Johnson}, J. Approx. Theory 203, 28--54 (2016; Zbl 1334.41041) Full Text: DOI OpenURL
Abrishami-Moghaddam, Majid; Sistani, Tahereh On pseudo-Chebyshev subspaces in quotient generalized 2-normed spaces. (English) Zbl 1363.41029 Sci. Bull., Ser. A, Appl. Math. Phys., Politeh. Univ. Buchar. 77, No. 3, 123-130 (2015). MSC: 41A52 PDF BibTeX XML Cite \textit{M. Abrishami-Moghaddam} and \textit{T. Sistani}, Sci. Bull., Ser. A, Appl. Math. Phys., Politeh. Univ. Buchar. 77, No. 3, 123--130 (2015; Zbl 1363.41029) OpenURL
Jamjoom, Fatmah B.; Peralta, Antonio M.; Siddiqui, Akhlaq A.; Tahlawi, Haifa M. Chebyshev subspaces of JBW\(^{\ast}\)-triples. (Čebyšëv subspaces of JBW\(^{\ast}\)-triples.) (English) Zbl 1334.41039 J. Inequal. Appl. 2015, Paper No. 288, 15 p. (2015). MSC: 41A50 41A52 41A65 PDF BibTeX XML Cite \textit{F. B. Jamjoom} et al., J. Inequal. Appl. 2015, Paper No. 288, 15 p. (2015; Zbl 1334.41039) Full Text: DOI OpenURL
Friedland, Shmuel; Stawiska, Małgorzata Some approximation problems in semi-algebraic geometry. (English) Zbl 1338.14055 Białas-Cież, Leokadia (ed.) et al., Constructive approximation of functions. Selected papers based on the presentations at the conference, Bȩdlewo, Poland, June 29 – July 5, 2014. Warsaw: Polish Academy of Sciences, Institute of Mathematics (ISBN 978-83-86806-30-0/pbk). Banach Center Publications 107, 133-147 (2015). MSC: 14P10 41A52 41A65 PDF BibTeX XML Cite \textit{S. Friedland} and \textit{M. Stawiska}, Banach Cent. Publ. 107, 133--147 (2015; Zbl 1338.14055) Full Text: DOI arXiv OpenURL
Komarov, M. A. An analog of the Haar condition for simple partial fractions. (English. Russian original) Zbl 1351.41023 J. Math. Sci., New York 208, No. 2, 174-180 (2015); translation from Probl. Mat. Anal. 80, 25-30 (2015). MSC: 41A52 41A20 PDF BibTeX XML Cite \textit{M. A. Komarov}, J. Math. Sci., New York 208, No. 2, 174--180 (2015; Zbl 1351.41023); translation from Probl. Mat. Anal. 80, 25--30 (2015) Full Text: DOI OpenURL
Littmann, Friedrich; Spanier, Mark Extremal functions with vanishing condition. (English) Zbl 1329.41025 Constr. Approx. 42, No. 2, 209-229 (2015). Reviewer: Peter Massopust (München) MSC: 41A30 41A52 41A05 41A44 42A82 PDF BibTeX XML Cite \textit{F. Littmann} and \textit{M. Spanier}, Constr. Approx. 42, No. 2, 209--229 (2015; Zbl 1329.41025) Full Text: DOI arXiv OpenURL
Eslahchi, Mohammad R.; Dehghan, Mehdi; Amani, Sanaz Chebyshev polynomials and best approximation of some classes of functions. (English) Zbl 1323.41027 J. Numer. Math. 23, No. 1, 41-50 (2015). MSC: 41A50 41A52 PDF BibTeX XML Cite \textit{M. R. Eslahchi} et al., J. Numer. Math. 23, No. 1, 41--50 (2015; Zbl 1323.41027) Full Text: DOI OpenURL
Bustamante, Jorge; Martínez-Cruz, Reinaldo; Quesada, José María Quasi orthogonal Jacobi polynomials and best one-sided \(L_1\) approximation to step functions. (English) Zbl 1326.41010 J. Approx. Theory 198, 10-23 (2015). Reviewer: Daniel Wulbert (La Jolla) MSC: 41A10 41A50 41A52 41A05 PDF BibTeX XML Cite \textit{J. Bustamante} et al., J. Approx. Theory 198, 10--23 (2015; Zbl 1326.41010) Full Text: DOI OpenURL
Narang, T. D.; Gupta, Sahil Proximinality and co-proximinality in metric linear spaces. (English) Zbl 1321.41044 Ann. Univ. Mariae Curie-Skłodowska, Sect. A 69, No. 1, 83-90 (2015). MSC: 41A50 41A52 41A65 35E10 PDF BibTeX XML Cite \textit{T. D. Narang} and \textit{S. Gupta}, Ann. Univ. Mariae Curie-Skłodowska, Sect. A 69, No. 1, 83--90 (2015; Zbl 1321.41044) Full Text: DOI Link OpenURL
Berdyshev, V. I. Linear approximation of vector functions. (English. Russian original) Zbl 1326.41032 Proc. Steklov Inst. Math. 288, Suppl. 1, S40-S45 (2015); translation from Tr. Inst. Mat. Mekh. (Ekaterinburg) 20, No. 4, 38-43 (2014). Reviewer: Daniel Wulbert (La Jolla) MSC: 41A45 41A10 41A50 41A52 PDF BibTeX XML Cite \textit{V. I. Berdyshev}, Proc. Steklov Inst. Math. 288, S40--S45 (2015; Zbl 1326.41032); translation from Tr. Inst. Mat. Mekh. (Ekaterinburg) 20, No. 4, 38--43 (2014) Full Text: DOI OpenURL
Narang, T. D.; Gupta, Sahil Strong approximative compactness and strong proximinality in metric linear spaces. (English) Zbl 1323.41029 J. Indian Math. Soc., New Ser. 82, No. 1-2, 109-116 (2015). MSC: 41A50 41A52 41A65 PDF BibTeX XML Cite \textit{T. D. Narang} and \textit{S. Gupta}, J. Indian Math. Soc., New Ser. 82, No. 1--2, 109--116 (2015; Zbl 1323.41029) OpenURL
Mazaheri, H.; Zarenejhad, M. Some new results on remotal points in normed spaces. (English) Zbl 1408.41030 J. Mahani Math. Res. Cent. 3, No. 2, 37-50 (2014). MSC: 41A65 41A52 46N10 PDF BibTeX XML Cite \textit{H. Mazaheri} and \textit{M. Zarenejhad}, J. Mahani Math. Res. Cent. 3, No. 2, 37--50 (2014; Zbl 1408.41030) Full Text: DOI OpenURL
Chesnokova, K. V. The linearity coefficient of metric projections onto one-dimensional Chebyshev subspaces of the space \(C\). (English. Russian original) Zbl 1321.41048 Math. Notes 96, No. 4, 556-562 (2014); translation from Mat. Zametki 96, No. 4, 588-595 (2014). Reviewer: Daniel Wulbert (La Jolla) MSC: 41A65 41A52 41A40 PDF BibTeX XML Cite \textit{K. V. Chesnokova}, Math. Notes 96, No. 4, 556--562 (2014; Zbl 1321.41048); translation from Mat. Zametki 96, No. 4, 588--595 (2014) Full Text: DOI OpenURL
Derȩgowska, Beata; Lewandowska, Barbara A note on generalized projections in \(c_{0}\). (English) Zbl 1311.47015 Ann. Pol. Math. 111, No. 1, 59-72 (2014). Reviewer: Richard A. Zalik (Auburn) MSC: 47A58 41A52 PDF BibTeX XML Cite \textit{B. Derȩgowska} and \textit{B. Lewandowska}, Ann. Pol. Math. 111, No. 1, 59--72 (2014; Zbl 1311.47015) Full Text: DOI OpenURL
Vijayaragavan, R. Strongly unique best simulations approximation in linear 2-normed spaces. (English) Zbl 1371.41039 Malaya J. Mat. 1, No. 4, 157-162 (2013). MSC: 41A50 41A52 41A99 41A28 PDF BibTeX XML Cite \textit{R. Vijayaragavan}, Malaya J. Mat. 1, No. 4, 157--162 (2013; Zbl 1371.41039) Full Text: Link OpenURL
Kadelburg, Zoran; Radenović, Stojan A note on some recent best proximity point results for non-self mappings. (English) Zbl 1389.41047 Gulf J. Math. 1, No. 1, 36-41 (2013). MSC: 41A52 41A65 47H10 54H25 PDF BibTeX XML Cite \textit{Z. Kadelburg} and \textit{S. Radenović}, Gulf J. Math. 1, No. 1, 36--41 (2013; Zbl 1389.41047) Full Text: Link OpenURL
Carneiro, Emanuel; Littmann, Friedrich; Vaaler, Jeffrey D. Gaussian subordination for the Beurling-Selberg extremal problem. (English) Zbl 1276.41018 Trans. Am. Math. Soc. 365, No. 7, 3493-3534 (2013). Reviewer: Yuri A. Farkov (Moskva) MSC: 41A30 41A52 41A05 41A44 42A82 PDF BibTeX XML Cite \textit{E. Carneiro} et al., Trans. Am. Math. Soc. 365, No. 7, 3493--3534 (2013; Zbl 1276.41018) Full Text: DOI arXiv OpenURL
Lewicki, Grzegorz; Micek, Agnieszka Uniqueness of minimal Fourier-type extensions in \(L_1\)-spaces. (English) Zbl 1270.41007 Monatsh. Math. 170, No. 2, 161-178 (2013). Reviewer: D. K. Ugulawa (Tbilisi) MSC: 41A35 41A52 46E30 PDF BibTeX XML Cite \textit{G. Lewicki} and \textit{A. Micek}, Monatsh. Math. 170, No. 2, 161--178 (2013; Zbl 1270.41007) Full Text: DOI OpenURL
Deregowska, Beata; Lewandowska, Barbara On the unique minimality of the Fourier projection in \(L_p\) spaces. (English) Zbl 1272.46005 Numer. Funct. Anal. Optim. 34, No. 1, 1-15 (2013). MSC: 46B20 46B28 47A58 41A52 42A10 PDF BibTeX XML Cite \textit{B. Deregowska} and \textit{B. Lewandowska}, Numer. Funct. Anal. Optim. 34, No. 1, 1--15 (2013; Zbl 1272.46005) Full Text: DOI OpenURL
Nievergelt, Yves Fitting cylinders to data. (English) Zbl 1255.65040 J. Comput. Appl. Math. 239, 250-269 (2013). MSC: 65D10 41A10 41A28 41A50 41A52 41A63 65D17 PDF BibTeX XML Cite \textit{Y. Nievergelt}, J. Comput. Appl. Math. 239, 250--269 (2013; Zbl 1255.65040) Full Text: DOI OpenURL
Eslahchi, M. R.; Amani, Sanaz The best uniform polynomial approximation of two classes of rational functions. (English) Zbl 1303.41013 Iran. J. Math. Sci. Inform. 7, No. 2, 93-102 (2012). MSC: 41A50 41A52 PDF BibTeX XML Cite \textit{M. R. Eslahchi} and \textit{S. Amani}, Iran. J. Math. Sci. Inform. 7, No. 2, 93--102 (2012; Zbl 1303.41013) Full Text: Link OpenURL
Alimov, A. R. A monotone path connected Chebyshev set is a sun. (English. Russian original) Zbl 1285.41018 Math. Notes 91, No. 2, 290-292 (2012); translation from Mat. Zametki 91, No. 2, 305-307 (2012). Reviewer: Stefan Cobzaş (Cluj-Napoca) MSC: 41A65 41A50 41A52 46B20 PDF BibTeX XML Cite \textit{A. R. Alimov}, Math. Notes 91, No. 2, 290--292 (2012; Zbl 1285.41018); translation from Mat. Zametki 91, No. 2, 305--307 (2012) Full Text: DOI OpenURL
Qin, Xiaolin; Feng, Yong; Chen, Jingwei; Zhang, Jingzhong A complete algorithm to find exact minimal polynomial by approximations. (English) Zbl 1257.41017 Int. J. Comput. Math. 89, No. 17, 2333-2344 (2012). MSC: 41A52 65D99 68W30 PDF BibTeX XML Cite \textit{X. Qin} et al., Int. J. Comput. Math. 89, No. 17, 2333--2344 (2012; Zbl 1257.41017) Full Text: DOI OpenURL
Dryanov, Dimiter; Petrov, Petar On trigonometric blending interpolation and cubature formulae. (English) Zbl 1253.41026 Result. Math. 62, No. 3-4, 249-264 (2012). MSC: 41A50 41A52 41A29 42A15 42A10 PDF BibTeX XML Cite \textit{D. Dryanov} and \textit{P. Petrov}, Result. Math. 62, No. 3--4, 249--264 (2012; Zbl 1253.41026) Full Text: DOI OpenURL
Skrzypek, Lesław Chalmers-Metcalf operator and uniqueness of minimal projections in \(\ell^{n}_{\infty}\) and \(\ell^{n}_{1}\) spaces. (English) Zbl 1263.41014 Neamtu, Marian (ed.) et al., Approximation theory XIII: San Antonio 2010. Selected papers based on the presentations at the conference, San Antonio, TX, USA, March 7–10, 2010. New York, NY: Springer (ISBN 978-1-4614-0771-3/hbk; 978-1-4614-0772-0/ebook). Springer Proceedings in Mathematics 13, 331-344 (2012). Reviewer: D. K. Ugulawa (Tbilisi) MSC: 41A35 41A52 PDF BibTeX XML Cite \textit{L. Skrzypek}, Springer Proc. Math. 13, 331--344 (2012; Zbl 1263.41014) Full Text: DOI OpenURL
Carneiro, Emanuel A survey on Beurling-Selberg majorants and some consequences of the Riemann hypothesis. (English) Zbl 1288.11080 Mat. Contemp. 40, 149-172 (2011). MSC: 11M06 11M26 11M36 41A30 41A52 PDF BibTeX XML Cite \textit{E. Carneiro}, Mat. Contemp. 40, 149--172 (2011; Zbl 1288.11080) OpenURL
Hendtlass, Matthew; Schuster, Peter Minima and best approximations in constructive analysis. (English) Zbl 1316.03038 J. Log. Anal. 3, Article 5, 17 p. (2011). Reviewer: Iosif Petrakis (München) MSC: 03F60 26E40 41A50 41A52 PDF BibTeX XML Cite \textit{M. Hendtlass} and \textit{P. Schuster}, J. Log. Anal. 3, Article 5, 17 p. (2011; Zbl 1316.03038) Full Text: DOI OpenURL
Borodin, P. A. On the convexity of \( N\)-Chebyshev sets. (English. Russian original) Zbl 1239.46013 Izv. Math. 75, No. 5, 889-914 (2011); translation from Izv. Ross. Akad. Nauk, Ser. Mat. 75, No. 5, 19-46 (2011). Reviewer: Stefan Cobzaş (Cluj-Napoca) MSC: 46B20 41A50 41A52 41A65 PDF BibTeX XML Cite \textit{P. A. Borodin}, Izv. Math. 75, No. 5, 889--914 (2011; Zbl 1239.46013); translation from Izv. Ross. Akad. Nauk, Ser. Mat. 75, No. 5, 19--46 (2011) Full Text: DOI OpenURL
Marrero, Isabel A note on reflexivity and nonconvexity. (English) Zbl 1244.47047 Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 74, No. 18, 6890-6894 (2011). Reviewer: Jarosław Górnicki (Rzeszów) MSC: 47H08 41A52 47H10 PDF BibTeX XML Cite \textit{I. Marrero}, Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 74, No. 18, 6890--6894 (2011; Zbl 1244.47047) Full Text: DOI OpenURL
Marinov, A. V. On uniform constants of strong uniqueness in Chebyshev approximations and fundamental results of N. G. Chebotarev. (English. Russian original) Zbl 1229.41030 Izv. Math. 75, No. 3, 603-630 (2011); translation from Izv. Ross. Akad. Nauk, Ser. Mat. 2011, No. 3, 161-188 (2011). Reviewer: Alexey Alimov (Moskva) MSC: 41A50 41A52 PDF BibTeX XML Cite \textit{A. V. Marinov}, Izv. Math. 75, No. 3, 603--630 (2011; Zbl 1229.41030); translation from Izv. Ross. Akad. Nauk, Ser. Mat. 2011, No. 3, 161--188 (2011) Full Text: DOI OpenURL
Yudin, V. A. On polynomials of least deviation from zero. (English. Russian original) Zbl 1284.41004 Math. Notes 87, No. 5, 779-783 (2010); translation from Mat. Zametki 87, No. 5, 796-800 (2010). Reviewer: Jesus Illán González (Vigo) MSC: 41A10 41A50 41A52 PDF BibTeX XML Cite \textit{V. A. Yudin}, Math. Notes 87, No. 5, 779--783 (2010; Zbl 1284.41004); translation from Mat. Zametki 87, No. 5, 796--800 (2010) Full Text: DOI OpenURL
Mustaţă, Costică On the existence and uniqueness of extensions of semi-Hölder real-valued functions. (English) Zbl 1249.26003 Rev. Anal. Numér. Théor. Approx. 39, No. 2, 134-140 (2010). MSC: 26A16 41A50 41A52 46A19 PDF BibTeX XML Cite \textit{C. Mustaţă}, Rev. Anal. Numér. Théor. Approx. 39, No. 2, 134--140 (2010; Zbl 1249.26003) OpenURL
Haddadi, M. R.; Hejazjpoor, N.; Mazaheri, H. Some results about best coapproximation in \(L^p(S, X)\). (English) Zbl 1224.41092 Anal. Theory Appl. 26, No. 1, 69-75 (2010). MSC: 41A50 41A52 46A32 46B28 PDF BibTeX XML Cite \textit{M. R. Haddadi} et al., Anal. Theory Appl. 26, No. 1, 69--75 (2010; Zbl 1224.41092) Full Text: DOI OpenURL
Dawson, Robert J. MacG. Monotone and Čebyšev arcs in hyperspaces. (English) Zbl 1213.41017 J. Geom. 98, No. 1-2, 1-19, erratum 21 (2010). Reviewer: Richard A. Zalik (Auburn University) MSC: 41A52 52A20 PDF BibTeX XML Cite \textit{R. J. MacG. Dawson}, J. Geom. 98, No. 1--2, 1--19, erratum 21 (2010; Zbl 1213.41017) Full Text: DOI OpenURL
Kowynia, Joanna The unicity of best approximation in a space of compact operators. (English) Zbl 1208.41022 Bull. Belg. Math. Soc. - Simon Stevin 17, No. 5, 807-820 (2010). Reviewer: Roshdi Khalil (Amman) MSC: 41A65 41A52 PDF BibTeX XML Cite \textit{J. Kowynia}, Bull. Belg. Math. Soc. - Simon Stevin 17, No. 5, 807--820 (2010; Zbl 1208.41022) Full Text: Euclid OpenURL
Carneiro, Emanuel; Vaaler, Jeffrey D. Some extremal functions in Fourier analysis. II. (English) Zbl 1207.41013 Trans. Am. Math. Soc. 362, No. 11, 5803-5843 (2010). Reviewer: Juri M. Rappoport (Moskva) MSC: 41A30 41A52 42A05 41A05 41A44 42A10 PDF BibTeX XML Cite \textit{E. Carneiro} and \textit{J. D. Vaaler}, Trans. Am. Math. Soc. 362, No. 11, 5803--5843 (2010; Zbl 1207.41013) Full Text: DOI arXiv OpenURL
Baratchart, Laurent; Yattselev, Maxim Asymptotic uniqueness of best rational approximants to complex Cauchy transforms in \(L^2\) of the circle. (English) Zbl 1204.41021 Arvesú, Jorge (ed.) et al., Recent trends in orthogonal polynomials and approximation theory. International workshop in honor of Guillermo López Lagomasino’s 60th birthday, Universidad Carlos III de Madrid, Leganés, Spain. Providence, RI: American Mathematical Society (AMS) (ISBN 978-0-8218-4803-6/pbk). Contemporary Mathematics 507, 87-111 (2010). Reviewer: T. D. Narang (Amritsar) MSC: 41A52 41A20 30E10 PDF BibTeX XML Cite \textit{L. Baratchart} and \textit{M. Yattselev}, Contemp. Math. 507, 87--111 (2010; Zbl 1204.41021) Full Text: arXiv OpenURL
Moghaddam, Majid Abrishami On \(f\)-best approximation in quotient topological vector spaces. (English) Zbl 1195.41034 Int. Math. Forum 5, No. 9-12, 587-595 (2010). MSC: 41A65 41A50 41A52 PDF BibTeX XML Cite \textit{M. A. Moghaddam}, Int. Math. Forum 5, No. 9--12, 587--595 (2010; Zbl 1195.41034) Full Text: Link OpenURL
Carneiro, Emanuel; Vaaler, Jeffrey D. Some extremal functions in Fourier analysis. III. (English) Zbl 1183.41020 Constr. Approx. 31, No. 2, 259-288 (2010). MSC: 41A30 41A52 42A05 41A05 41A44 42A10 PDF BibTeX XML Cite \textit{E. Carneiro} and \textit{J. D. Vaaler}, Constr. Approx. 31, No. 2, 259--288 (2010; Zbl 1183.41020) Full Text: DOI arXiv OpenURL
Kroó, András; Pinkus, Allan Strong uniqueness. (English) Zbl 1181.41003 Surv. Approx. Theory 5, 1-91 (2010). MSC: 41-02 41A52 41A50 41A65 PDF BibTeX XML Cite \textit{A. Kroó} and \textit{A. Pinkus}, Surv. Approx. Theory 5, 1--91 (2010; Zbl 1181.41003) Full Text: arXiv EuDML EMIS OpenURL
Eftekhari, Noha The basic theorem and its consequences. (English) Zbl 1301.41020 Iran. J. Math. Sci. Inform. 4, No. 1, 27-35 (2009). MSC: 41A52 41A65 PDF BibTeX XML Cite \textit{N. Eftekhari}, Iran. J. Math. Sci. Inform. 4, No. 1, 27--35 (2009; Zbl 1301.41020) Full Text: Link OpenURL
Yudin, V. A. Invariants and Chebyshev polynomials. (English. Russian original) Zbl 1229.41032 Proc. Steklov Inst. Math. 266, Suppl. 1 (2009, Suppl. 2), 227-245 (2009); translation from Tr. Inst. Mat. Mekh. (Ekaterinburg) 15, No. 1 (2009). Reviewer: Vasile Postolică (Piatra Neamt) MSC: 41A50 41A52 PDF BibTeX XML Cite \textit{V. A. Yudin}, Proc. Steklov Inst. Math. 266, 227--245 (2009; Zbl 1229.41032); translation from Tr. Inst. Mat. Mekh. (Ekaterinburg) 15, No. 1 (2009) Full Text: DOI OpenURL
Austrin, Per; Mossel, Elchanan Approximation resistant predicates from pairwise independence. (English) Zbl 1214.68172 Comput. Complexity 18, No. 2, 249-271 (2009). MSC: 68Q17 41A52 68Q25 68W25 PDF BibTeX XML Cite \textit{P. Austrin} and \textit{E. Mossel}, Comput. Complexity 18, No. 2, 249--271 (2009; Zbl 1214.68172) Full Text: DOI OpenURL
Pai, Devidas On lower semicontinuity of the restricted center multifunction. (English) Zbl 1212.41058 Rev. Anal. Numér. Théor. Approx. 38, No. 1, 87-103 (2009). MSC: 41A28 41A52 41A65 PDF BibTeX XML Cite \textit{D. Pai}, Rev. Anal. Numér. Théor. Approx. 38, No. 1, 87--103 (2009; Zbl 1212.41058) OpenURL
Elumalai, S.; Baskaran, B. Approximation in linear 2-normed spaces. (English) Zbl 1197.41023 Bull. Allahabad Math. Soc. 24, No. 2, 315-325 (2009). MSC: 41A50 41A52 41A65 46B99 PDF BibTeX XML Cite \textit{S. Elumalai} and \textit{B. Baskaran}, Bull. Allahabad Math. Soc. 24, No. 2, 315--325 (2009; Zbl 1197.41023) OpenURL
Liesen, Jörg; Tichý, Petr On best approximations of polynomials in matrices in the matrix 2-norm. (English) Zbl 1190.41011 SIAM J. Matrix Anal. Appl. 31, No. 2, 853-863 (2009). MSC: 41A52 15A60 65F35 PDF BibTeX XML Cite \textit{J. Liesen} and \textit{P. Tichý}, SIAM J. Matrix Anal. Appl. 31, No. 2, 853--863 (2009; Zbl 1190.41011) Full Text: DOI Link OpenURL
Ardakani, H.; Mazaheri, H. Some results on \(f\)-weakly Chebyshev subspace in approximation theory. (English) Zbl 1187.41013 J. Pure Appl. Math., Adv. Appl. 2, No. 2, 239-245 (2009). MSC: 41A50 41A52 41A17 54B15 35E10 PDF BibTeX XML Cite \textit{H. Ardakani} and \textit{H. Mazaheri}, J. Pure Appl. Math., Adv. Appl. 2, No. 2, 239--245 (2009; Zbl 1187.41013) OpenURL
He, Jinsu; Luo, Xianfa Strong unicity of best approximations from \(RS\)-sets in spaces of complex bounded linear operators. (Chinese. English summary) Zbl 1199.41183 Acta Math. Sin., Chin. Ser. 52, No. 3, 615-624 (2009). MSC: 41A65 41A52 PDF BibTeX XML Cite \textit{J. He} and \textit{X. Luo}, Acta Math. Sin., Chin. Ser. 52, No. 3, 615--624 (2009; Zbl 1199.41183) OpenURL
Sagna, Abass Universal \(L^s\)-rate-optimality of \(L^r\)-optimal quantizers by dilatation and contraction. (English) Zbl 1193.60055 ESAIM, Probab. Stat. 13, 218-246 (2009). Reviewer: Vjatscheslav Vasiliev (Tomsk) MSC: 60G35 41A52 60G15 PDF BibTeX XML Cite \textit{A. Sagna}, ESAIM, Probab. Stat. 13, 218--246 (2009; Zbl 1193.60055) Full Text: DOI arXiv EuDML OpenURL
Kowynia, Joanna Best approximation in Chebyshev subspaces of \({\mathcal L}(l_1^n,l_1^n)\). (English) Zbl 1182.41025 Opusc. Math. 29, No. 1, 57-67 (2009). MSC: 41A50 41A52 41A05 PDF BibTeX XML Cite \textit{J. Kowynia}, Opusc. Math. 29, No. 1, 57--67 (2009; Zbl 1182.41025) Full Text: DOI OpenURL
Moslehian, M. S.; Niknam, A.; Torbati, S. Shadkam Differentiability of distance functions in \(p\)-normed spaces. (English) Zbl 1175.41027 Aust. J. Math. Anal. Appl. 6, No. 1, Article 10, 1-10 (2009). MSC: 41A52 41A65 58C20 PDF BibTeX XML Cite \textit{M. S. Moslehian} et al., Aust. J. Math. Anal. Appl. 6, No. 1, Article 10, 1--10 (2009; Zbl 1175.41027) Full Text: Link OpenURL
Saravanan, R.; Vijayaragavan, R. Strongly unique best approximation in linear 2-normed spaces. (English) Zbl 1179.41029 Indian J. Math. 51, No. 1, 117-125 (2009). Reviewer: Vasile Postolică (Piatra Neamt) MSC: 41A50 41A52 PDF BibTeX XML Cite \textit{R. Saravanan} and \textit{R. Vijayaragavan}, Indian J. Math. 51, No. 1, 117--125 (2009; Zbl 1179.41029) OpenURL
Eslahchi, M. R.; Dehghan, Mehdi The best uniform polynomial approximation to class of the form \(\frac{1}{(a^2\pm x^2)}\). (English) Zbl 1171.41310 Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 71, No. 3-4, 740-750 (2009). Reviewer: Costica Mustăţa (Cluj-Napoca) MSC: 41A50 41A52 PDF BibTeX XML Cite \textit{M. R. Eslahchi} and \textit{M. Dehghan}, Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 71, No. 3--4, 740--750 (2009; Zbl 1171.41310) Full Text: DOI OpenURL
MacG. Dawson, Robert J.; Moszyńska, Maria Čebyšev sets in hyperspaces over \(\mathbb{R}^{n}\). (English) Zbl 1167.41005 Can. J. Math. 61, No. 2, 299-314 (2009). Reviewer: T. D. Narang (Amritsar) MSC: 41A52 52A20 PDF BibTeX XML Cite \textit{R. J. MacG. Dawson} and \textit{M. Moszyńska}, Can. J. Math. 61, No. 2, 299--314 (2009; Zbl 1167.41005) Full Text: DOI OpenURL
Elumalai, S.; Vijayaragavan, R. Best simultaneous approximation in linear 2-normed spaces. (English) Zbl 1240.41074 Gen. Math. 16, No. 1, 73-81 (2008). MSC: 41A50 41A52 41A99 41A28 PDF BibTeX XML Cite \textit{S. Elumalai} and \textit{R. Vijayaragavan}, Gen. Math. 16, No. 1, 73--81 (2008; Zbl 1240.41074) OpenURL
Branga, Adrian An inequality for generalized spline functions. (English) Zbl 1212.41032 Acu, Dumitru (ed.) et al., Proceedings of the 5th international symposium “Mathematical inequalities”, Sibiu, Romania, September 25–27, 2008. Sibiu: “Lucian Blaga” University Press (ISBN 978-973-739-740-9). 33-39 (2008). MSC: 41A15 41A50 41A52 65D07 PDF BibTeX XML Cite \textit{A. Branga}, in: Proceedings of the 5th international symposium ``Mathematical inequalities'', Sibiu, Romania, September 25--27, 2008. Sibiu: ``Lucian Blaga'' University Press. 33--39 (2008; Zbl 1212.41032) OpenURL
Branga, Adrian A best approximation property of the generalized spline functions. (English) Zbl 1199.41049 Gen. Math. 16, No. 4, 25-33 (2008). MSC: 41A15 41A50 41A52 65D07 PDF BibTeX XML Cite \textit{A. Branga}, Gen. Math. 16, No. 4, 25--33 (2008; Zbl 1199.41049) Full Text: EuDML OpenURL
Saravanan, R.; Vijayaragavan, R.; Elumalai, S. Best simultaneous coapproximation in linear 2- normed spaces. (English) Zbl 1160.41311 Int. J. Math. Sci. Eng. Appl. 2, No. 1, 45-54 (2008). MSC: 41A50 41A52 41A28 PDF BibTeX XML Cite \textit{R. Saravanan} et al., Int. J. Math. Sci. Eng. Appl. 2, No. 1, 45--54 (2008; Zbl 1160.41311) Full Text: Link OpenURL
Faraci, Francesca; Iannizzotto, Antonio Well posed optimization problems and nonconvex Chebyshev sets in Hilbert spaces. (English) Zbl 1161.41010 SIAM J. Optim. 19, No. 1, 211-216 (2008). Reviewer: Radu Păltănea (Braşov) MSC: 41A65 41A52 PDF BibTeX XML Cite \textit{F. Faraci} and \textit{A. Iannizzotto}, SIAM J. Optim. 19, No. 1, 211--216 (2008; Zbl 1161.41010) Full Text: DOI OpenURL
MacG. Dawson, Robert J. Some Čebyšev sets with dimension \(d+1\) in hyperspaces over \(\mathbb{R}^d\). (English) Zbl 1162.41008 MacG. Dawson, Robert J. (ed.) et al., Convex and fractal geometry. Papers of the conference, Będlewo, Poland, May 21–26, 2007. Warsaw: Polish Academy of Sciences, Institute of Mathematics (ISBN 978-83-86806-03-4/pbk). Banach Center Publications 84, 89-110 (2009). Reviewer: Mircea Balaj (Oradea) MSC: 41A65 54B20 41A52 52A20 PDF BibTeX XML Cite \textit{R. J. MacG. Dawson}, Banach Cent. Publ. 84, 89--110 (2008; Zbl 1162.41008) OpenURL