Jha, Sripati; Mishra, B. N. Interpolation by generalized Chebychevian spline functions. (English) Zbl 0857.41002 J. Bihar Math. Soc. 10, 50-59 (1986). MSC: 41A05 41A15 PDFBibTeX XMLCite \textit{S. Jha} and \textit{B. N. Mishra}, J. Bihar Math. Soc. 10, 50--59 (1986; Zbl 0857.41002)
Finogenov, S. A.; Lebedev, V. I.; Vlasov, Yu. A. On asymptotically optimal iterative methods taking into account information on the operator spectrum and the distribution of the initial error. (English. Russian original) Zbl 0825.65042 Sov. J. Numer. Anal. Math. Model. 1, No. 4, 277-292 (1986). MSC: 65J10 47A50 47A10 PDFBibTeX XMLCite \textit{S. A. Finogenov} et al., Sov. J. Numer. Anal. Math. Model. 1, No. 4, 277--292 (1986; Zbl 0825.65042)
Abd-Elal, L. F. A fast method for the numerical solution of singular integro-differential equations. (English) Zbl 0805.65144 Proc. Math. Phys. Soc. Egypt 61(1991), 11-25 (1986). MSC: 65R20 45J05 PDFBibTeX XMLCite \textit{L. F. Abd-Elal}, Proc. Math. Phys. Soc. Egypt 61, 11--25 (1986; Zbl 0805.65144)
Sultanov, N. R. Approximation by rational functions with poles on a fixed polar set. (Russian) Zbl 0782.41023 Mathematical analysis and algebra, Collect. Sci. Works, Tashkent, 58-65 (1986). Reviewer: A.Lukashov (Saratov) MSC: 41A20 41A50 PDFBibTeX XMLCite \textit{N. R. Sultanov}, in: Математический анализ и алгебра. Сборник научных трудов. Tashkent: Tashkentskij Gosudarstvennyj Universitet Im. V. I. Lenina. 58--65 (1986; Zbl 0782.41023)
Jiang, Gong Jian The degree of approximation by quasi and extensive Hermite-Fejér interpolation operators with Chebyshev nodes of the second kind. (Chinese. English summary) Zbl 1332.41010 J. Inn. Mong. Univ. 17, No. 3, 427-435 (1986). MSC: 41A10 PDFBibTeX XMLCite \textit{G. J. Jiang}, J. Inn. Mong. Univ. 17, No. 3, 427--435 (1986; Zbl 1332.41010)
Taĭkov, L. V. (ed.) Application of functional analysis in approximation theory. Interuniversity thematic collection of scientific works. (Применение функционал’ого анализа в теории приближений. Межвузовский тематический сборник научных трудов.) (Russian) Zbl 0743.41003 Kalinin: Kalininskiĭ Gosudarstvennyĭ Universitet, 144 pp. (1986). MSC: 41-06 00B15 42-06 46-06 41A50 41A10 41A65 41A40 41A05 PDFBibTeX XMLCite \textit{L. V. Taĭkov} (ed.), Применение функционал'ого анализа в теории приближений. Межвузовский тематический сборник научных трудов (Russian). Kalinin: Kalininskij Gosudarstvennyj Universitet (1986; Zbl 0743.41003)
Lebedev, V. I.; Konyaev, S. I. Numerical investigation of the efficiency of combined iterative methods. (Chislennoe issledovanie ehffektivnosti kombinirovannykh iteratsionnykh metodov.) (Russian) Zbl 0703.65018 Preprint, Otdel Vychislitel’noj Matematiki AN SSSR, 136. Moskva: Otdel Vychislitel’noj Matematiki AN SSSR. 40 p. R. 0.20 (1986). Reviewer: W.Govaerts MSC: 65F10 PDFBibTeX XMLCite \textit{V. I. Lebedev} and \textit{S. I. Konyaev}, Chislennoe issledovanie ehffektivnosti kombinirovannykh iteratsionnykh metodov (Russian). Moskva: Otdel Vychislitel'noj Matematiki AN SSSR (1986; Zbl 0703.65018)
Karčicka, D. L. On a class of linear systems. (Macedonian. English summary) Zbl 0784.15002 Mat. Bilt. 9-10, 11-17 (1986). MSC: 15A06 90C05 PDFBibTeX XMLCite \textit{D. L. Karčicka}, Mat. Bilt. 9--10, 11--17 (1986; Zbl 0784.15002)
Kozłowska, Grażyna Converse approximation theorems in the spaces \(L_ P(-\pi,\pi;-\pi,\pi)\) where \(P=(p_ 1,p_ 2)\) and \(0<p_ 1<1\), \(0<p_ 2\leq 1\). (English) Zbl 0778.41017 Zesz. Nauk. Politech. Śląsk. 853, Mat.-Fiz. 48, 91-98 (1986). MSC: 41A65 41A50 42A10 PDFBibTeX XMLCite \textit{G. Kozłowska}, Zesz. Nauk. Politech. Śląsk. Mat.-Fiz. 853(48), 91--98 (1986; Zbl 0778.41017)
Kovtunets, V. V. Differential properties of the operator of best approximation with interpolation. (English. Russian original) Zbl 0717.41048 Sov. Math. 30, No. 12, 49-56 (1986); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 1986, No. 12(295), 36-42 (1986). MSC: 41A50 41A36 PDFBibTeX XMLCite \textit{V. V. Kovtunets}, Sov. Math. 30, No. 12, 49--56 (1986; Zbl 0717.41048); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 1986, No. 12(295), 36--42 (1986)
Lupaş, Alexandru Computation of values of elementary functions. I. (Romanian) Zbl 0714.65017 Gaz. Mat., Perfecţ. Metod. Metodol. Mat. Inf. 7, No. 1, 15-26 (1986). Reviewer: M.Gaşpar (Iaşi) MSC: 65D20 26-04 26A09 33B10 PDFBibTeX XMLCite \textit{A. Lupaş}, Gaz. Mat., Perfecț. Metod. Metodol. Mat. Inf. 7, 15--26 (1986; Zbl 0714.65017)
Bazhenova, I. V. On the weakly Chebyshev sets. (Russian) Zbl 0701.41044 Issled. Teor. Funkts. Mnogikh Veshchestv. Perem. 6, 36-41 (1986). MSC: 41A65 41A50 PDFBibTeX XMLCite \textit{I. V. Bazhenova}, Issled. Teor. Funkts. Mnogikh Veshchestv. Perem. 6, 36--41 (1986; Zbl 0701.41044)
Opershtejn, V. A. On a problem of optimal renewal of a function. (Russian) Zbl 0701.41038 Issled. Teor. Funkts. Mnogikh Veshchestv. Perem. 6, 93-96 (1986). MSC: 41A50 26A15 PDFBibTeX XMLCite \textit{V. A. Opershtejn}, Issled. Teor. Funkts. Mnogikh Veshchestv. Perem. 6, 93--96 (1986; Zbl 0701.41038)
Kroó, András On uniqueness of best \(L_ 1\)-approximation on disjoint intervals. (English) Zbl 0696.41024 Math. Z. 191, 507-512 (1986). MSC: 41A50 PDFBibTeX XMLCite \textit{A. Kroó}, Math. Z. 191, 507--512 (1986; Zbl 0696.41024) Full Text: DOI EuDML
Cox, M. G. Piecewise Chebyshev series. (English) Zbl 0696.01009 Bull., Inst. Math. Appl. 22, 163-166 (1986). MSC: 01A60 PDFBibTeX XMLCite \textit{M. G. Cox}, Bull., Inst. Math. Appl. 22, 163--166 (1986; Zbl 0696.01009)
Bressan, N.; Quarteroni, A. An implicit/explicit spectral method for Burgers’ equation. (English) Zbl 0691.65081 Calcolo 23, 265-284 (1986). MSC: 65Z05 65N35 35Q99 65N15 PDFBibTeX XMLCite \textit{N. Bressan} and \textit{A. Quarteroni}, Calcolo 23, 265--284 (1986; Zbl 0691.65081) Full Text: DOI
Costică, Mustăţa On the extension of Lipschitz functions. (English) Zbl 0689.41027 Prepr., ”Babes-Bolyai” Univ., Fac. Math., Res. Semin. 1, 83-92 (1986). MSC: 41A65 41A50 PDFBibTeX XMLCite \textit{M. Costică}, Prepr., ``Babes-Bolyai'' Univ., Fac. Math., Res. Semin. 1, 83--92 (1986; Zbl 0689.41027)
Uchimura, Keisuke Zeros of the Chebyshev polynomials of the second kind in two variables z and \(\bar z\). (English) Zbl 0683.33008 Rend. Mat. Appl., VII. Ser. 6, No. 3, 343-353 (1986). Reviewer: J.Faraut MSC: 33C45 PDFBibTeX XMLCite \textit{K. Uchimura}, Rend. Mat. Appl., VII. Ser. 6, No. 3, 343--353 (1986; Zbl 0683.33008)
Strauss, H. Best \(L_{\infty}\)-approximation by piecewise polynomial functions. (English) Zbl 0681.41017 Optimal algorithms, Proc. Int. Symp., Blagoevgrad/Bulg. 1986, 193-202 (1986). Reviewer: T.D.Narang MSC: 41A50 41A10 PDFBibTeX XML
Zhu, Changzhong Nonlinear best approximations with constraints with respect to varying seminorms. II. (Chinese. English summary) Zbl 0679.41016 J. Shanghai Univ. Sci. Technol. 1986, No. 1, 30-32 (1986). MSC: 41A50 41A65 PDFBibTeX XMLCite \textit{C. Zhu}, J. Shanghai Univ. Sci. Technol. 1986, No. 1, 30--32 (1986; Zbl 0679.41016)
Quateroni, Alfio Gas transient simulations with spectral methods. (English) Zbl 0678.76073 Computing methods in applied sciences and engineering VII, Proc. 7th Int. Symp., Versailles/France 1985, 123-136 (1986). MSC: 76N15 65N35 PDFBibTeX XML
Deschamps, V.; Loisel, P.; Morchoisne, Y. Recent developments in inhomogeneous turbulence numerical simulation. (English) Zbl 0678.76045 Computing methods in applied sciences and engineering VII, Proc. 7th Int. Symp., Versailles/France 1985, 435-448 (1986). MSC: 76F99 76M99 PDFBibTeX XML
Xing, Fuchong; Su, Chaolong On some properties of \(H^ p_ q\) space. (English) Zbl 0676.42022 J. Xinjiang Univ., Nat. Sci. 3, No. 3, 49-55 (1986). Reviewer: R.N.Siddiqi MSC: 42B30 41A50 42A10 30E10 41A10 PDFBibTeX XMLCite \textit{F. Xing} and \textit{C. Su}, J. Xinjiang Univ., Nat. Sci. 3, No. 3, 49--55 (1986; Zbl 0676.42022)
Dunham, Charles B. Chebyshev approximation with the local Haar condition. II. (English) Zbl 0676.41033 Numerical mathematics and computing, Proc. 15th Conf., Winnipeg/Manitoba 1985, Congr. Numerantium 51, 123-136 (1986). Reviewer: G.Meinardus MSC: 41A50 41A46 41A63 PDFBibTeX XML
Bojanov, Borislav Comparison theorems in optimal recovery. (English) Zbl 0675.41035 Optimal algorithms, Proc. Int. Symp., Blagoevgrad/Bulg. 1986, 15-50 (1986). MSC: 41A50 41A30 41A46 PDFBibTeX XML
Bacry, Henri Zeros of polynomials and generalized Chebyshev polynomials. (English) Zbl 0674.33009 Group theoretical methods in physics, Proc. 3rd Semin., Yurmala/USSR 1985, Vol. 1, 481-494 (1986). Reviewer: E.G.Kalnins MSC: 33C80 33C45 PDFBibTeX XML
Ricci, Paolo Emilio An iteration property of Chebyshev polynomials of the first kind in several variables. (Italian. English summary) Zbl 0671.33010 Rend. Mat. Appl., VII. Ser. 6, No. 4, 555-563 (1986). Reviewer: J.Aczél MSC: 33C80 39B99 PDFBibTeX XMLCite \textit{P. E. Ricci}, Rend. Mat. Appl., VII. Ser. 6, No. 4, 555--563 (1986; Zbl 0671.33010)
Uchimura, Keisuke Linear combinations of Chebyshev polynomials of the second kind in several variables. (English) Zbl 0669.33010 Rend. Mat. Appl., VII. Ser. 6, No. 1-2, 147-158 (1986). Reviewer: K.Uchimura MSC: 33C45 PDFBibTeX XMLCite \textit{K. Uchimura}, Rend. Mat. Appl., VII. Ser. 6, No. 1--2, 147--158 (1986; Zbl 0669.33010)
Zolin, A. G. On uniqueness of the best approximation of functions in the space \(L_ p^{(k)}(G)\). (Russian) Zbl 0668.41020 Vopr. Vychisl. Prikl. Mat. 80, 99-104 (1986). MSC: 41A50 PDFBibTeX XMLCite \textit{A. G. Zolin}, Vopr. Vychisl. Prikl. Mat. 80, 99--104 (1986; Zbl 0668.41020)
Saxena, R. B.; Misra, S. R. An everywhere divergent Hermite-Fejér type interpolation process of higher order. (English) Zbl 0668.41001 Acta Math. Hung. 48, 79-85 (1986). Reviewer: M.B.A.Babaev MSC: 41A05 PDFBibTeX XMLCite \textit{R. B. Saxena} and \textit{S. R. Misra}, Acta Math. Hung. 48, 79--85 (1986; Zbl 0668.41001) Full Text: DOI
Srinivasan, S.; Viswanath, K. Coproximinality and biproximinality in Banach spaces. (English) Zbl 0667.46008 Modern analysis and its applications, Pap. Int. Symp., New Delhi/India 1983, 135-160 (1986). MSC: 46B20 46B25 41A50 PDFBibTeX XML
Dai, Hua; Zhou, Shuquan An iterative Chebyshev-Lanczos method for solving large symmetric eigenvalue problems. (Chinese. English summary) Zbl 0666.65032 J. Nanjing Aeronaut. Inst. 1986, No. 4, 25-34 (1986). MSC: 65F15 65F10 PDFBibTeX XMLCite \textit{H. Dai} and \textit{S. Zhou}, J. Nanjing Aeronaut. Inst. 1986, No. 4, 25--34 (1986; Zbl 0666.65032)
Džafarov, Ar. S. Bernstein inequality for differential operators. (English) Zbl 0666.41011 Anal. Math. 12, No. 4, 251-268 (1986). Reviewer: D.K.Ugulawa MSC: 41A17 41A50 47E05 PDFBibTeX XMLCite \textit{Ar. S. Džafarov}, Anal. Math. 12, No. 4, 251--268 (1986; Zbl 0666.41011) Full Text: DOI
Taberski, Roman Contributions to fractional calculus and exponential approximation. (English) Zbl 0665.42006 Funct. Approx., Comment. Math. 15, 81-106 (1986). Reviewer: R.Gajewski MSC: 42A10 41A50 PDFBibTeX XMLCite \textit{R. Taberski}, Funct. Approximatio, Comment. Math. 15, 81--106 (1986; Zbl 0665.42006)
Badalyan, G. V.; Edigaryan, V. M. To the question of best approximation of k-fold differentiable functions by polynomials of the Müntz system in space. (Russian) Zbl 0665.41006 Uch. Zap. Erevan. Gos. Univ., Estestv. Nauki 1986, No. 1(161), 3-10 (1986). Reviewer: C.Mustăţa MSC: 41A10 41A50 PDFBibTeX XMLCite \textit{G. V. Badalyan} and \textit{V. M. Edigaryan}, Uch. Zap. Erevan. Gos. Univ., Estestv. Nauki 1986, No. 1(161), 3--10 (1986; Zbl 0665.41006)
Wagner, Manfred Strikte Approximation und stetige Selektionen der metrischen Projektion in schwach Tschebyscheffschen Räumen. (German) Zbl 0664.41028 Naturwissenschaftliche Fakultäten der Friedrich-Alexander-Universität Erlangen-Nürnberg. 87 S. (1986). MSC: 41A65 PDFBibTeX XML
Kovtunets, V. V. Differential properties of the operator of best approximation with interpolation. (Russian) Zbl 0664.41023 Izv. Vyssh. Uchebn. Zaved., Mat. 1986, No. 12, 36-42 (1986). Reviewer: C.Mustăţa MSC: 41A50 41A36 PDFBibTeX XMLCite \textit{V. V. Kovtunets}, Izv. Vyssh. Uchebn. Zaved., Mat. 1986, No. 12(295), 36--42 (1986; Zbl 0664.41023)
Blatter, Jörg Best uniform approximation by splines with fixed knots: an algorithmic approach. (English) Zbl 0664.41022 Methods of functional analysis in approximation theory, Proc. Int. Conf., Bombay 1985, ISNM 76, 45-57 (1986). Reviewer: Xiong Zhenxiang (Alhambra) MSC: 41A50 41A15 41A10 PDFBibTeX XML
Wang, Panfeng; Deng, Chuanfang Best interpolation product approximation. (English) Zbl 0664.41021 J. Dalian Inst. Technol. 25, Suppl., 28-31 (1986). Reviewer: Ying-Guang Shi MSC: 41A50 PDFBibTeX XML
Atakishiyev, N. M.; Suslov, S. K. Representaions of SO(3,1) and the Hahn polynomials. (English) Zbl 0663.33004 Group theoretical methods in physics, Proc. 3rd Semin., Yurmala/USSR 1985, Vol. 1, 523-530 (1986). Reviewer: N.M.Atakishiyev MSC: 33C45 33C80 22E45 PDFBibTeX XML
Uzakov, M. M. Stability in multidimensional problems of analytic continuation. (Russian) Zbl 0662.32013 Correctness questions and methods for the investigation of inverse problems, Collect. Sci. Works, 129-141 (1986). Reviewer: T.Tonev MSC: 32D15 41A05 PDFBibTeX XML
Chen, Shanwo A class of second degree exponential splines. (Chinese) Zbl 0659.41013 Math. Pract. Theory 1986, No. 2, 45-50 (1986). Reviewer: Dayong Cui MSC: 41A15 41A05 PDFBibTeX XMLCite \textit{S. Chen}, Math. Pract. Theory 1986, No. 2, 45--50 (1986; Zbl 0659.41013)
Fernández García-Hierro, Manuel Approximation in normed product spaces: simultaneous approximation and approximation with mixed norm. (Aproximación en espacios normados producto: aproximación simultanea y con norma mixta). (Spanish) Zbl 0657.41023 Publicaciones de la Sección de Matemáticas, Universidad de Extremadura, 10. Badajoz, España: Universidad de Extremadura, Facultad de Ciencias, Sección de Matemáticas. VI, 116 p. (1986). Reviewer: P.L.Papini MSC: 41A65 41A28 41A50 PDFBibTeX XML
Grozev, Georgi R. Uniqueness of the optimal quadrature formulas for some classes of differentiable functions. (Russian) Zbl 0657.41016 Serdica 12, 364-375 (1986). Reviewer: W.Plesniak MSC: 41A55 41A50 PDFBibTeX XMLCite \textit{G. R. Grozev}, Serdica 12, 364--375 (1986; Zbl 0657.41016)
Dieudonné, Jean (ed.) Abrégé d’histoire des mathématiques 1700-1900. Nouv. version. (A short history of mathematics 1700-1900). (French) Zbl 0656.01001 Paris: Hermann. VIII, 517 p.; FF 210.00 (1986). MSC: 01A05 PDFBibTeX XML
Vlasov, L. P. The existence of elements of best approximation in the complex space C(Q). (English. Russian original) Zbl 0655.41031 Math. Notes 40, 857-861 (1986); translation from Mat. Zametki 40, No. 5, 627-634 (1986). MSC: 41A50 41A65 30E10 PDFBibTeX XMLCite \textit{L. P. Vlasov}, Math. Notes 40, 857--861 (1986; Zbl 0655.41031); translation from Mat. Zametki 40, No. 5, 627--634 (1986) Full Text: DOI
Ainulloev, N.; Taikov, L. V. Best approximation in the sense of Kolmogorov of classes of function analytic in the unit disc. (English. Russian original) Zbl 0654.41025 Math. Notes 40, 699-705 (1986); translation from Mat. Zametki 40, No. 3, 341-351 (1986). MSC: 41A50 30E10 41A46 PDFBibTeX XMLCite \textit{N. Ainulloev} and \textit{L. V. Taikov}, Math. Notes 40, 699--705 (1986; Zbl 0654.41025); translation from Mat. Zametki 40, No. 3, 341--351 (1986) Full Text: DOI
Privalov, A. A. Uniform convergence criteria for Lagrange interpolation processes. (Russian. English original) Zbl 0654.41003 Sov. Math. 30, No. 5, 65-77 (1986); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 1986, No. 5(288), 49-59 (1986). MSC: 41A05 42A05 PDFBibTeX XMLCite \textit{A. A. Privalov}, Sov. Math. 30, No. 5, 65--77 (1986; Zbl 0654.41003); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 1986, No. 5(288), 49--59 (1986)
Okecha, G. E. Evaluating singular integrals of Cauchy type using a modified Gaussian rule. (English) Zbl 0653.65016 Int. J. Comput. Math. 19, No. 1, 85-92 (1986). MSC: 65D32 41A55 30E20 PDFBibTeX XMLCite \textit{G. E. Okecha}, Int. J. Comput. Math. 19, No. 1, 85--92 (1986; Zbl 0653.65016) Full Text: DOI
Malozëmova, L. K.; Malozëmov, V. N. Algebraic polynomials having the least deviation from zero together with the derivative. (English. Russian original) Zbl 0651.41003 Vestn. Leningr. Univ., Math. 19, No. 3, 38-44 (1986); translation from Vestn. Leningr. Univ., Ser. I 1986, No. 3, 29-34 (1986). MSC: 41A10 41A50 PDFBibTeX XMLCite \textit{L. K. Malozëmova} and \textit{V. N. Malozëmov}, Vestn. Leningr. Univ., Math. 19, No. 3, 38--44 (1986; Zbl 0651.41003); translation from Vestn. Leningr. Univ., Ser. I 1986, No. 3, 29--34 (1986)
Boesch, F. T.; Prodinger, H. Spanning tree formulas and Chebyshev polynomials. (English) Zbl 0651.05028 Graphs Comb. 2, 191-200 (1986). MSC: 05C05 05C30 33C45 PDFBibTeX XMLCite \textit{F. T. Boesch} and \textit{H. Prodinger}, Graphs Comb. 2, 191--200 (1986; Zbl 0651.05028) Full Text: DOI
Fischer, Thomas Stetige Selektionen bei semi-infiniter Optimierung. (Continuous selections in semi-infinite optimization). (German) Zbl 0649.90068 Frankfurt/Main: R. G. Fischer Verlag. V, 77 S. (1986). Reviewer: R.Hettich MSC: 90C31 90C34 90C05 41A50 90-02 54C65 PDFBibTeX XML
Boyd, John P. An analytical and numerical study of the two-dimensional Bratu equation. (English) Zbl 0649.65057 J. Sci. Comput. 1, No. 2, 183-206 (1986). MSC: 65N25 65N35 35P30 PDFBibTeX XMLCite \textit{J. P. Boyd}, J. Sci. Comput. 1, No. 2, 183--206 (1986; Zbl 0649.65057) Full Text: DOI
Zolotarev, V. M. Modern theory of the summation of independent random variables. (Sovremennaya teoriya summirovaniya nezavisimykh sluchajnykh velichin). (Russian) Zbl 0649.60016 Teoriya Veroyatnostej i Matematicheskaya Statistika, 37. Moskva: Nauka. 416 p. R. 3.20 (GOE: ZA 67361:37) (1986). Reviewer: W.Szczotka MSC: 60Fxx 60-02 60E07 PDFBibTeX XML
Pych-Taberska, Paulina On fractional differences, moduli of smoothness and best trigonometric approximation. (English) Zbl 0649.42004 Funct. Approximatio, Comment. Math. 15, 107-116 (1986). Reviewer: T.Akholadze MSC: 42A10 41A50 PDFBibTeX XMLCite \textit{P. Pych-Taberska}, Funct. Approximatio, Comment. Math. 15, 107--116 (1986; Zbl 0649.42004)
Haussmann, W.; Zeller, K. Approximate Zolotarev polynomials. (English) Zbl 0647.41006 Comput. Math. Appl., Part B 12, 1133-1140 (1986). Reviewer: S.M.Shah MSC: 41A10 12E10 PDFBibTeX XMLCite \textit{W. Haussmann} and \textit{K. Zeller}, Comput. Math. Appl., Part B 12, 1133--1140 (1986; Zbl 0647.41006)
Martins, Fátima Graça Polynomial splines and best approximation. (English) Zbl 0647.41002 Trab. Invest. 1, 41 p. (1986). Reviewer: D.N.Zarnadze MSC: 41A05 41A15 41A50 PDFBibTeX XML
Narang, T. D. A note on Chebyshev sets in linear metric spaces. (English) Zbl 0646.46013 Math. Educ. 20, 62-64 (1986). MSC: 46A55 41A65 46A04 PDFBibTeX XMLCite \textit{T. D. Narang}, Math. Educ. 20, 62--64 (1986; Zbl 0646.46013)
Zholdasova, K. On an algebraic Markovian biorthogonal system. (Russian) Zbl 0645.42022 Dokl. Akad. Nauk UzSSR 1986, No. 4, 10-11 (1986). MSC: 42C10 PDFBibTeX XMLCite \textit{K. Zholdasova}, Dokl. Akad. Nauk UzSSR 1986, No. 4, 10--11 (1986; Zbl 0645.42022)
Thaheem, A. B. Existence of best approximations. II. (English) Zbl 0645.41022 Approximation theory V, Proc. 5th Int. Symp., College Station/Tex. 1986, 591-593 (1986). MSC: 41A50 41A65 PDFBibTeX XML
Igumnov, A. B.; Solov’ëv, A. S. A stable pseudo-spectral method for solving initial boundary-value problems. (English) Zbl 0643.65072 U.S.S.R. Comput. Math. Math. Phys. 26, No. 6, 190-194 (1986). MSC: 65N35 35K05 35Q99 76D25 PDFBibTeX XMLCite \textit{A. B. Igumnov} and \textit{A. S. Solov'ëv}, U.S.S.R. Comput. Math. Math. Phys. 26, No. 6, 190--194 (1986; Zbl 0643.65072) Full Text: DOI
Lorentz, G. G. Approximation of functions. 2nd ed. (English) Zbl 0643.41001 New York, N.Y.: Chelsea Publishing Company. IX, 188 p. (1986). MSC: 41-01 41A10 41A50 41A05 41A25 42A10 41A65 41A46 41A63 41A40 41A36 PDFBibTeX XML
Schempp, Walter Group theoretical methods in approximation theory, elementary number theory, and computational signal geometry. (English) Zbl 0643.22005 Approximation theory V, Proc. 5th Int. Symp., College Station/Tex. 1986, 129-171 (1986). Reviewer: A.A.Terras MSC: 22E30 43A80 78A60 11A15 41A15 22E45 PDFBibTeX XML
Sahab, Salem A.; Kahn, M. S. Some results on best approximation. (English) Zbl 0642.47045 Zb. Rad., Prir.-Mat. Fak., Univ. Novom Sadu, Ser. Mat. 16, No. 2, 143-152 (1986). MSC: 47H10 41A50 47H09 54H25 PDFBibTeX XMLCite \textit{S. A. Sahab} and \textit{M. S. Kahn}, Zb. Rad., Prir.-Mat. Fak., Univ. Novom Sadu, Ser. Mat. 16, No. 2, 143--152 (1986; Zbl 0642.47045)
Narang, T. D. On best coapproximation. (English) Zbl 0642.41018 Ranchi Univ. Math. J. 17, 49-56 (1986). Reviewer: T.D.Narang MSC: 41A50 41A65 PDFBibTeX XMLCite \textit{T. D. Narang}, Ranchi Univ. Math. J. 17, 49--56 (1986; Zbl 0642.41018)
Mori, Masatake (ed.) Algorithms for parallel numerical calculation. Proceedings of a symposium held at the Research Institute for Mathematical Sciences, Kyoto University, Kyoto, November 20-22, 1985. (Japanese) Zbl 0641.65003 RIMS Kokyuroku, 585. Kyoto: Kyoto University, Research Institute for Mathematical Sciences. IV, 293 p. (1986). MSC: 65-06 65Y05 00B25 PDFBibTeX XML
Grosjean, C. C. Evolution towards an invariant density distribution under a discrete-time quadratic map. (English) Zbl 0641.60025 J. Phys. A 19, 3535-3544 (1986). MSC: 60E99 PDFBibTeX XMLCite \textit{C. C. Grosjean}, J. Phys. A, Math. Gen. 19, 3535--3544 (1986; Zbl 0641.60025) Full Text: DOI
Taberski, Roman One-sided exponential approximation in L p-metrics \((0<p\leq 1)\). (English) Zbl 0641.41019 Funct. Approximatio, Comment. Math. 15, 245-258 (1986). Reviewer: G.S.Pandey MSC: 41A50 41A17 PDFBibTeX XMLCite \textit{R. Taberski}, Funct. Approximatio, Comment. Math. 15, 245--258 (1986; Zbl 0641.41019)
Sanikidze, D. G. A remark on the application of Chebyshev nodes to the approximate calculation of singular integrals with Jacobi weight functions. (Russian) Zbl 0639.41017 Tr., Inst. Vychisl. Mat. Im. N. I. Muskhelishvili 26, No. 1, 221-233 (1986). Reviewer: J.Kofroň MSC: 41A55 41A25 42B20 30E20 PDFBibTeX XMLCite \textit{D. G. Sanikidze}, Inst. Vychisl. Mat. Im. N. I. Muskhelishvili, Tr. 26, No. 1, 221--233 (1986; Zbl 0639.41017)
Sukharev, Aleksei G. On the existence of optimal affine methods for approximating linear functionals. (English) Zbl 0639.41014 J. Complexity 2, 317-322 (1986). Reviewer: F.Turnovec MSC: 41A50 PDFBibTeX XMLCite \textit{A. G. Sukharev}, J. Complexity 2, 317--322 (1986; Zbl 0639.41014) Full Text: DOI
Goodenough, S. J. A link between Lebesgue constants and Hermite-Fejér interpolation. (English) Zbl 0639.41001 Bull. Aust. Math. Soc. 33, 207-218 (1986). Reviewer: K.-H.Hoffmann MSC: 41A05 41A25 41A60 PDFBibTeX XMLCite \textit{S. J. Goodenough}, Bull. Aust. Math. Soc. 33, 207--218 (1986; Zbl 0639.41001) Full Text: DOI
Crampin, M.; Saunders, D. J. The sine-Gordon equation, Tchebyshev nets, and harmonic maps. (English) Zbl 0638.58007 Rep. Math. Phys. 23, 327-340 (1986). Reviewer: L.Pastur MSC: 58E20 35Q99 PDFBibTeX XMLCite \textit{M. Crampin} and \textit{D. J. Saunders}, Rep. Math. Phys. 23, 327--340 (1986; Zbl 0638.58007) Full Text: DOI
Pierre, R. Extremal properties of constrained Tchebychev polynomials. (English) Zbl 0638.41022 Can. J. Math. 38, 907-924 (1986). Reviewer: D.Wulbert MSC: 41A50 PDFBibTeX XMLCite \textit{R. Pierre}, Can. J. Math. 38, 907--924 (1986; Zbl 0638.41022) Full Text: DOI
Bojanov, Todor; Geshev, Lyubomir Hausdorff approximations in the classes of functions with a given modulus of continuity. (Bulgarian. English summary) Zbl 0638.41008 God. Sofij. Univ., Fak. Mat. Mekh. 72(1978), 41-45 (1986). MSC: 41A10 41A50 26A15 PDFBibTeX XMLCite \textit{T. Bojanov} and \textit{L. Geshev}, God. Sofiĭ. Univ., Fak. Mat. Mekh. 72, 41--45 (1986; Zbl 0638.41008)
Boyanov, Todor; Karlov, Emil Polynomial approximations of non-rectifiable sets in the plane. (English) Zbl 0638.41007 God. Sofij. Univ., Fak. Mat. Mekh. 72(1978), 5-9 (1986). MSC: 41A10 41A50 PDFBibTeX XMLCite \textit{T. Boyanov} and \textit{E. Karlov}, God. Sofiĭ. Univ., Fak. Mat. Mekh. 72, 5--9 (1986; Zbl 0638.41007)
Kounchev, O. Iv. On the uniform approximation of a continuous function by analytic functions - a Chebyshev criterion. (English) Zbl 0638.30038 Complex analysis and applications, Proc. Conf., Varna/Bulg. 1985, 367-377 (1986). Reviewer: K.Menke MSC: 30E10 41A50 41A52 PDFBibTeX XML
Baratchart, Laurent Existence and generic properties of \(L^ 2\) approximants for linear systems. (English) Zbl 0637.93027 IMA J. Math. Control Inf. 3, 89-101 (1986). MSC: 93C05 46E30 41A50 54H20 93B27 93C55 PDFBibTeX XMLCite \textit{L. Baratchart}, IMA J. Math. Control Inf. 3, 89--101 (1986; Zbl 0637.93027) Full Text: DOI
Makrelov, I. V.; Semerdzhiev, Kh. I.; Tamburov, S. G. A method for simultaneous determination of all zeros of a given generalized polynomial with respect to a Chebyshev system. (Russian) Zbl 0636.65044 Serdica 12, 351-357 (1986). Reviewer: J.Hřebíček MSC: 65H05 30C15 PDFBibTeX XMLCite \textit{I. V. Makrelov} et al., Serdica 12, 351--357 (1986; Zbl 0636.65044)
Varma, A. K. Birkhoff quadrature formulas based on Tchebycheff nodes. (English) Zbl 0636.41019 Acta Sci. Math. 50, 381-390 (1986). Reviewer: Yongshong Sun MSC: 41A55 65D32 PDFBibTeX XMLCite \textit{A. K. Varma}, Acta Sci. Math. 50, 381--390 (1986; Zbl 0636.41019)
Khalil, Roshdi Best approximation in tensor products. (English) Zbl 0636.41017 Numer. Funct. Anal. Optimization 8(1985-86), 347-356 (1986). Reviewer: N.Nashed MSC: 41A50 41A65 46M05 PDFBibTeX XMLCite \textit{R. Khalil}, Numer. Funct. Anal. Optim. 8, 347--356 (1986; Zbl 0636.41017) Full Text: DOI
Sendov, Bl. On a theorem of H. Whitney. (English. Russian original) Zbl 0636.41015 Sov. Math., Dokl. 34, 603-606 (1987); translation from Dokl. Akad. Nauk SSSR 291, 1296-1300 (1986). Reviewer: A.-I.Lupaş (Sibiu) MSC: 41A50 41A10 41A44 41A17 26A15 PDFBibTeX XMLCite \textit{Bl. Sendov}, Sov. Math., Dokl. 34, 603--606 (1986; Zbl 0636.41015); translation from Dokl. Akad. Nauk SSSR 291, 1296--1300 (1986)
Kaznina, O. V. On the mapping \(f: (V_p\subset E_n)\to (\bar V_p\subset E_{p+r})\) in the generalized Fubini-Čech problem. (Russian) Zbl 0635.53005 Differ. Geom. Mnogoobr. Figur 17, 40-42 (1986). Reviewer: Z.Jankovský MSC: 53A07 PDFBibTeX XMLCite \textit{O. V. Kaznina}, Differ. Geom. Mnogoobr. Figur 17, 40--42 (1986; Zbl 0635.53005)
Förster, K.-J. On Chebyshev quadrature for ultraspherical weight functions. (English) Zbl 0635.41026 Calcolo 23, 355-381 (1986). Reviewer: L.Gatteschi MSC: 41A55 PDFBibTeX XMLCite \textit{K. J. Förster}, Calcolo 23, 355--381 (1986; Zbl 0635.41026) Full Text: DOI
Light, W. A. Are Chebyshev expansions really better? (English) Zbl 0635.41011 Bull., Inst. Math. Appl. 22, 180-181 (1986). Reviewer: W.A.Light MSC: 41A10 41A60 PDFBibTeX XMLCite \textit{W. A. Light}, Bull., Inst. Math. Appl. 22, 180--181 (1986; Zbl 0635.41011)
Ichim, I.; Marinescu, G. Methods of numerical approximation. (Metode de approximare numerică). (Romanian) Zbl 0635.41001 Bucureşti: Editura Academiei Republicii Socialiste România. 240 p.; Lei 23.00 (1986). Reviewer: A.B.Németh MSC: 41-01 65D15 41A05 41A10 42A05 41A50 PDFBibTeX XML
Narang, T. D. A characterization of strictly convex metric linear spaces. (English) Zbl 0634.41026 Publ. Inst. Math., Nouv. Sér. 39(53), 149-151 (1986). Reviewer: D.N.Zarnadze MSC: 41A65 41A52 41A50 PDFBibTeX XMLCite \textit{T. D. Narang}, Publ. Inst. Math., Nouv. Sér. 39(53), 149--151 (1986; Zbl 0634.41026) Full Text: EuDML
Feschiev, I. Kh. On the best approximation of class H with functions of the class \(W^ 1_ MK\). (Russian) Zbl 0634.41021 C. R. Acad. Bulg. Sci. 39, No. 5, 27-30 (1986). Reviewer: A.L.Brown MSC: 41A50 42A05 42A10 41A25 41A65 PDFBibTeX XMLCite \textit{I. Kh. Feschiev}, C. R. Acad. Bulg. Sci. 39, No. 5, 27--30 (1986; Zbl 0634.41021)
Alimov, A. L. Piecewise Chebyshev approximation of experimental data. (English) Zbl 0633.65009 U.S.S.R. Comput. Math. Math. Phys. 26, No. 6, 102-107 (1986). MSC: 65D10 41A50 PDFBibTeX XMLCite \textit{A. L. Alimov}, U.S.S.R. Comput. Math. Math. Phys. 26, No. 6, 102--107 (1986; Zbl 0633.65009) Full Text: DOI
Casini, E.; Papini, P. L.; Zanco, C. Separation and approximation in normed linear spaces. (English) Zbl 0633.41036 Methods of functional analysis in approximation theory, Proc. Int. Conf., Bombay 1985, ISNM 76, 123-133 (1986). Reviewer: S.Cobzaş MSC: 41A65 52C17 PDFBibTeX XMLCite \textit{E. Casini} et al., in: Methods of functional analysis in approximation theory. Proceedings of the International Conference held at the Indian Institute of Technology, Bombay, December 16-20, 1985. Basel - Boston - Stuttgart: Birkhäuser Verlag. 123--133 (1986; Zbl 0633.41036)
Narang, T. D.; Garg, S. K. A note on best coapproximation in ultrametric spaces. (English) Zbl 0633.41033 Indian J. Math. 27(1986), 53-55 (1985). MSC: 41A65 41A50 PDFBibTeX XMLCite \textit{T. D. Narang} and \textit{S. K. Garg}, Indian J. Math. 27, 53--55 (1986; Zbl 0633.41033)
Labsker, L. G. The sufficient conditions of extendability of Chebyshev systems. (English. Russian original) Zbl 0633.41026 Sov. Math. 30, No. 9, 62-78 (1986); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 1986, No. 9(292), 45-58 (1986). Reviewer: S.Cobzaş MSC: 41A50 41A65 PDFBibTeX XMLCite \textit{L. G. Labsker}, Sov. Math. 30, No. 9, 62--78 (1986; Zbl 0633.41026); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 1986, No. 9(292), 45--58 (1986)
Hayes, J. G. An anniversary ramble over surfaces. (English) Zbl 0632.65012 Bull., Inst. Math. Appl. 22, 174-179 (1986). Reviewer: P.Galajda MSC: 65D10 65-03 01A65 41A10 41A63 PDFBibTeX XMLCite \textit{J. G. Hayes}, Bull., Inst. Math. Appl. 22, 174--179 (1986; Zbl 0632.65012)
De Blasi, F. S.; Myjak, J. Weak convergence of convex sets in Banach spaces. (English) Zbl 0632.46015 Arch. Math. 47, 448-456 (1986). Reviewer: J.V.Whittaker MSC: 46B20 41A50 46A55 46B10 PDFBibTeX XMLCite \textit{F. S. De Blasi} and \textit{J. Myjak}, Arch. Math. 47, 448--456 (1986; Zbl 0632.46015) Full Text: DOI
Coimbra, Elvira Strictly convex seminorms and best approximations in vectorially normed spaces. (English) Zbl 0632.46011 Trab. Invest. 2, 12 p. (1986). MSC: 46A55 41A50 PDFBibTeX XML
Rao, Geetha S.; Chandrasekaran, K. R. Some properties of the maps \(R_ G\) and \(R_{G'}\). (English) Zbl 0632.41023 Pure Appl. Math. Sci. 23, 21-27 (1986). Reviewer: H.R.Dowson MSC: 41A65 41A50 PDFBibTeX XMLCite \textit{G. S. Rao} and \textit{K. R. Chandrasekaran}, Pure Appl. Math. Sci. 23, 21--27 (1986; Zbl 0632.41023)
Rao, Geetha S. Best coapproximation in a normed linear space. (English) Zbl 0632.41018 Approximation theory V, Proc. 5th Int. Symp., College Station/Tex. 1986, 535-538 (1986). Reviewer: A.Kroó MSC: 41A50 41A65 PDFBibTeX XML
Gao, Junbin The asymptotic estimation of the remainders of some Hermite-Fejér interpolation operators. (Chinese. English summary) Zbl 0632.41001 J., Huazhong (Cent. China) Univ. Sci. Technol. 14, 409-412 (1986). Reviewer: Jinghuang Tian MSC: 41A05 41A36 41A25 PDFBibTeX XML
Nenakhov, E. I.; Primak, M. E. Convergence of the method of Chebyshev centers and some applications. (English. Russian original) Zbl 0631.90057 Cybernetics 22, 219-226 (1986); translation from Kibernetika 1986, No. 2, 60-65 (1986). MSC: 90C30 90C25 65K05 PDFBibTeX XMLCite \textit{E. I. Nenakhov} and \textit{M. E. Primak}, Cybernetics 22, 219--226 (1986; Zbl 0631.90057); translation from Kibernetika 1986, No. 2, 60--65 (1986) Full Text: DOI
Ortiz, E. L.; Pun, K.-S. A bidimensional tau-elements method for the numerical solution of nonlinear partial differential equations with an application to Burgers’ equation. (English) Zbl 0631.65120 Comput. Math. Appl., Part B 12, 1225-1240 (1986). Reviewer: Z.Dżygadło MSC: 65Z05 65N30 35Q99 PDFBibTeX XMLCite \textit{E. L. Ortiz} and \textit{K. S. Pun}, Comput. Math. Appl., Part B 12, 1225--1240 (1986; Zbl 0631.65120)
Igumnov, A. B.; Solov’ëv, A. S. A stable pseudospectral method for solving initial-boundary value problems. (Russian) Zbl 0631.65116 Zh. Vychisl. Mat. Mat. Fiz. 26, No. 12, 1895-1900 (1986). Reviewer: R.Farzan MSC: 65N35 35K05 35Q99 76D25 PDFBibTeX XMLCite \textit{A. B. Igumnov} and \textit{A. S. Solov'ëv}, Zh. Vychisl. Mat. Mat. Fiz. 26, No. 12, 1895--1900 (1986; Zbl 0631.65116)