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41A50 Best approximation, Chebyshev systems (27 articles)

• Abbasi, Naser; Mottaghi Golshan, Hamid: On best approximation in fuzzy metric spaces. (English). Kybernetika, vol. 51 (2015), issue 2, pp. 374-386
• Sýkorová, Irena: Some remarks on mixed approximation problem. (English). In: Brandts, J., Korotov, S., Křížek, M., Segeth, K., Šístek, J. and Vejchodský, T. (eds.): Application of Mathematics 2015, In honor of the birthday anniversaries of Ivo Babuška (90), Milan Práger (85), and Emil Vitásek (85). Proceedings. Prague, November 18-21, 2015. Institute of Mathematics CAS, Prague, 2015. pp. 236-241
• Chandok, Sumit: Some common fixed point results for rational type contraction mappings in partially ordered metric spaces. (English). Mathematica Bohemica, vol. 138 (2013), issue 4, pp. 407-413
• Beg, Ismat; Abbas, Mujahid: Invariant approximation for fuzzy nonexpansive mappings. (English). Mathematica Bohemica, vol. 136 (2011), issue 1, pp. 51-59
• Nashine, Hemant Kumar: Best approximation for nonconvex set in $q$-normed space. (English). Archivum Mathematicum, vol. 42 (2006), issue 1, pp. 51-58
• Bartl, David: An application of semi-infinite linear programming: approximation of a continuous function by a polynomial. (English). Acta Mathematica Universitatis Ostraviensis, vol. 12 (2004), issue 1, pp. 3-11
• Reich, Simeon; Zaslavski, Alexander J.: Best approximations and porous sets. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 44 (2003), issue 4, pp. 681-689
• Kovacheva, R. K.; Lawrynowicz, J.: An analogue of Montel’s theorem for some classes of rational functions. (English). Czechoslovak Mathematical Journal, vol. 52 (2002), issue 3, pp. 483-498
• Kofroň, Josef; Moravcová, Emílie: Interpolation formulas for functions of exponential type. (English). Applications of Mathematics, vol. 46 (2001), issue 6, pp. 401-417
• Kofroň, Josef: Interpolation operators on the space of holomorphic functions on the unit circle. (English). Applications of Mathematics, vol. 46 (2001), issue 3, pp. 161-189
• Dragomir, S. S.; Koliha, J. J.: Two mappings related to semi-inner products and their applications in geometry of normed linear spaces. (English). Applications of Mathematics, vol. 45 (2000), issue 5, pp. 337-355
• Karakuş, Yusuf: Best simultaneous $L_p$ approximations. (English). Czechoslovak Mathematical Journal, vol. 48 (1998), issue 3, pp. 457-463
• Cobzaş, S.: Antiproximinal sets in the Banach space $c(X)$. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 38 (1997), issue 2, pp. 247-253
• Lewicki, Grzegorz: Strong unicity criterion in some space of operators. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 34 (1993), issue 1, pp. 81-87
• Kilmer, Shelby J.; Kozƚowski, Wojciech M.; Lewicki, Grzegorz: Sigma order continuity and best approximation in $L_\varrho$-spaces. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 32 (1991), issue 2, pp. 241-250
• Kálovics, Ferenc: A fast iteration for uniform approximation. (English). Aplikace matematiky, vol. 33 (1988), issue 4, pp. 269-276
• Narang, T. D.: Approximation relative to an ultra function. (English). Archivum Mathematicum, vol. 22 (1986), issue 4, pp. 181-186
• Narang, T. D.: Characterizations of elements of best approximation in non-Archimedean normed spaces. (English). Archivum Mathematicum, vol. 21 (1985), issue 2, pp. 123-126
• Narang, T. D.: On $f$-best approximation in topological spaces. (English). Archivum Mathematicum, vol. 21 (1985), issue 4, pp. 229-233
• Zajíček, Luděk: Differentiability of the distance function and points of multi-valuedness of the metric projection in Banach space. (English). Czechoslovak Mathematical Journal, vol. 33 (1983), issue 2, pp. 292-308
• Narang, Tulsi Dass: Best approximation and strict convexity of metric spaces. (English). Archivum Mathematicum, vol. 17 (1981), issue 2, pp. 87-90
• Šmerk, Jiří: The approximation of functions in the sense of Tchebychev. II. (English). Archivum Mathematicum, vol. 12 (1976), issue 3, pp. 117-141
• Šmerk, Jiří: The approximation of functions in the sense of Tchebychev. I. (English). Archivum Mathematicum, vol. 11 (1975), issue 1, pp. 31-51
• Stránská, Carmen: Optimal and Sard approximation. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 16 (1975), issue 3, pp. 567-582
• Přikryl, P.: Universal approximations of certain functionals in Banach spaces. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 15 (1974), issue 1, pp. 135-136
• Najzar, Karel: On the method of least squares of finding eigenvalues and eigenfunctions of some symmetric operators. II. (English). Commentationes Mathematicae Universitatis Carolinae, vol. 11 (1970), issue 3, pp. 449-462
• Wulbert, D. E.: Structure of Tchebychev sets. (English). In: General Topology and its Relations to Modern Analysis and Algebra. Proceedings of the second Prague topological symposium, 1966. Academia Publishing House of the Czechoslovak Academy of Sciences, Praha, 1967. pp. 356-358