Domrachev, V. I. On the location of zeros of polynomials with respect to a Chebyshev system. (Russian) Zbl 0599.41045 Primen. Funkts. Anal. Teor. Priblizh. 1981, 37-39 (1981). MSC: 41A50 × Cite Format Result Cite Review PDF
Todorov, P. G. The \(n\)-th derivative of the function \(\phi(1-2tx+t^ 2)\) and its application to a unified obtaining of the classical Gegenbauer, Legendre, Chebyshev and Hermite polynomials. (Bulgarian. English, Russian summaries) Zbl 0599.30037 Nauchni Tr., Plovdivski Univ. 19, No. 1, 225-231 (1981). MSC: 30C45 × Cite Format Result Cite Review PDF
Vinogradov, O. M. On some classes of Korovkin systems. (Russian) Zbl 0588.41015 Primen. Funkts. Anal. Teor. Priblizh. 1981, 25-36 (1981). Reviewer: I.Marek MSC: 41A36 41A30 41A65 × Cite Format Result Cite Review PDF
Del Bosco, Domenico; Rossati, Franco Characterizations of strictly convex normed linear spaces. (English) Zbl 0583.46014 Atti Accad. Sci. Lett. Arti Palermo, V. Ser., Parte I 2 (1981/82), 359-369 (1985). Reviewer: J.A.Ball MSC: 46B20 41A50 × Cite Format Result Cite Review PDF
Karchitska, D. L. Chebyshev points of the system \(a(nP-E)x=d\). (Macedonian. English summary) Zbl 0578.65060 God. Zb., Mat. Fak. Univ. Kiril Metodij Skopje 32, 23-28 (1981). MSC: 65K05 90C05 × Cite Format Result Cite Review PDF
Ye, Maodong Some results about \(E_ n(W^ r_ p)_ p\). (Chinese. English summary) Zbl 0578.42002 J. Math. Res. Expo. 1981, No. 1, 55-58 (1981). MSC: 42A10 41A30 41A50 × Cite Format Result Cite Review PDF
Kornejchuk, N. P. Diameters and optimal recovery. (English) Zbl 0571.41022 Approximation and function spaces, Proc. int. Conf., Gdańsk 1979, 355-370 (1981). MSC: 41A46 41A50 × Cite Format Result Cite Review PDF
Liu, Ruizhen; Zhang, Shuyuan On the approximation of periodic continuous functions of two variables by de la Vallée-Poussin sums in the uniform norm. (Chinese. English summary) Zbl 0569.42003 J. Northeast Norm. Univ., Nat. Sci. Ed. 1981, No. 4, 9-18 (1981). MSC: 42A10 42A05 41A50 × Cite Format Result Cite Review PDF
Potapov, M. K.; Fernández Muniz, J. L. Characteristic structure and constructive characteristic of functions analytic in a strip. (Spanish. English summary) Zbl 0564.42001 Rev. Cienc. Mat. 2, No. 2, 3-18 (1981). Reviewer: L.Lagomasino MSC: 42A10 41A17 41A50 × Cite Format Result Cite Review PDF
Gottlieb, D.; Lustman, L.; Orszag, S. A. Spectral computations of one dimensional inviscid compressible flows. (English) Zbl 0561.76076 SIAM J. Sci. Stat. Comput. 2, 296-310 (1981). Reviewer: M.Thompson MSC: 76N10 76M99 65N35 35L65 × Cite Format Result Cite Review PDF Full Text: DOI
Potapov, M. K.; Fiodorov, V. M.; Fraguela, A. About the best approximation of integrable functions in \(L_ p\)-space with weight. (Spanish. English summary) Zbl 0558.41027 Rev. Cienc. Mat. 2, No. 2, 19-42 (1981). Reviewer: S.Cinquini MSC: 41A50 41A65 × Cite Format Result Cite Review PDF
Chrzan, Piotr Application of Chebyshev’s inequality for determining equivalents of deterministic probabilistic models. (Polish. Russian, English summaries) Zbl 0551.90071 Przegl. Stat. 28, 247-254 (1981). Reviewer: T.Sawik MSC: 90C15 90C25 × Cite Format Result Cite Review PDF
Nakao, Hisanori Some properties of the modified Chebyshev functions and their application to the analysis of repetitive four-terminal networks. (Japanese. English summary) Zbl 0549.65006 Rep. Fac. Sci. Technol., Meijo Univ. 21, 1-8 (1981). MSC: 65D20 33C45 34B30 78A55 × Cite Format Result Cite Review PDF
Stens, Rudolf Approximation stetiger Funktionen durch algebraische Polynome und ihre Charakterisierung durch gewichtete Lipschitzbedingungen. (English) Zbl 0546.41009 Mathematisch-Naturwissenschaftliche Fakultät der Rheinisch- Westfälischen Technischen Hochschule Aachen. 77 S. (1981). Reviewer: H.Fiedler MSC: 41A10 41A50 41A65 × Cite Format Result Cite Review PDF
Stepanov, S. E. Realization of the Chebyshev connections on surfaces of an affine space. (Russian) Zbl 0544.53009 Modern geometry (Investigations on differential geometry), Interuniv. Collect. sci. Works, Leningrad 1981, 111-115 (1981). Reviewer: V.Goldberg MSC: 53B05 53A15 × Cite Format Result Cite Review PDF
Potapov, M. K.; López, G. On the problem of the characteristic structure of functions with a certain order of best approximation by means of algebraic polynomials. (Spanish. English summary) Zbl 0544.41023 Rev. Cienc. Mat. 2, No. 3, 85-99 (1981). MSC: 41A50 41A10 × Cite Format Result Cite Review PDF
Kirov, G.; Bazelkov, M. On the approximation of continuous functions of two variables by averaging of K-splines. (Bulgarian) Zbl 0544.41014 Mathematics and education in mathematics, Proc. 10th Spring Conf. Union Bulg. Math., Sunny Beach 1981, 142-146 (Bulgarian) (1981). Reviewer: M.B.A.Babaev MSC: 41A15 41A63 26A15 41A50 × Cite Format Result Cite Review PDF
Sakoyan, S. K. Inequalities of the Chebyshev type for random variables satisfying Cramér’s condition (A). (Russian) Zbl 0542.60020 Limit theorems for stochastic processes and statistical conclusions, Work Collect., Tashkent 1981, 165-178 (1981). Reviewer: V.M.Kruglov MSC: 60E15 × Cite Format Result Cite Review PDF
Ponomareva, A. I. On the generalization of the notion “\(\alpha\)-sun”. (Russian) Zbl 0541.41039 Primen. Funkts. Anal. Teor. Priblizh. 1981, 84-88 (1981). Reviewer: A.Kroo MSC: 41A65 41A50 × Cite Format Result Cite Review PDF
Chesnokova, O. S. Some estimates of Lebesgue functions for Fourier series with respect to Chebyshev-Hermite polynomials and Chebyshev-Laguerre polynomials. (Russian) Zbl 0539.42011 Primen. Funkts. Anal. Teor. Priblizh. 1981, 139-144 (1981). Reviewer: N.Bozhinov MSC: 42C10 × Cite Format Result Cite Review PDF
Drozhzhin, I. A. Supremal generators and Rubinstein systems in \(C(Q_ n)\). (Russian) Zbl 0539.41027 Primen. Funkts. Anal. Teor. Priblizh. 1981, 40-45 (1981). Reviewer: S.S.Kurtateladze MSC: 41A50 × Cite Format Result Cite Review PDF
Borwein, J. Some remarks on a paper of Cobzas on antiproximal sets. (English) Zbl 0538.41046 Bull. Calcutta Math. Soc. 73, 5-8 (1981). Reviewer: G.D.Taylor MSC: 41A65 41A50 46E15 × Cite Format Result Cite Review PDF
Fazekas, G. A generalisation of the simplex algorithm for solving the Chebyshev-Markoff problem. (Eine Verallgemeinerung des Simplexalgorithmus zur Lösung des Tschebyscheff-Markoff Problems.) (German) Zbl 0537.65091 Publ. Math. Debr. 28, 31-51 (1981). Reviewer: E.Gesztelyi MSC: 65R10 65K05 44A60 90C05 × Cite Format Result Cite Review PDF
Vajnerman, Yu. R. On the approximation of differentiable functions by Lagrange interpolation polynomials with respect to the Tchebycheff nodes. (English. Russian original) Zbl 0537.41002 Sov. Math. Dokl. 24, 529-532 (1981); translation from Dokl. Akad. Nauk SSSR 261, 527-530 (1981). Reviewer: R.B.Saxena MSC: 41A10 41A05 26A15 41A17 41A50 × Cite Format Result Cite Review PDF
Vasil’ev, A. A. Approximation by splines of arbitrary defect with two-sided constraints. (English) Zbl 0536.41017 Vestn. Leningr. Univ., Math. 13, 283-291 (1981). MSC: 41A15 41A29 41A50 × Cite Format Result Cite Review PDF
Berdyshev, V. I. The stability of the solution of an approximation problem. (Russian) Zbl 0535.65032 Approximation and interpolation methods, Mater. IV. All-Union Conf., Novosibirsk 1981, 14-18 (1981). Reviewer: D.Sanikidze MSC: 65J05 41A65 41A50 × Cite Format Result Cite Review PDF
Zdzisław, Wyderka About one problem of the best uniform approximation with equality constraint on coefficients. (English) Zbl 0533.41022 Pr. Nauk. Uniw. Śląsk. Katowicach 420, Pr. Mat. 11, 55-58 (1981). Reviewer: Rong-Qing Jia (Hangzhou) MSC: 41A50 65D15 41A29 × Cite Format Result Cite Review PDF
Pinkus, A. Bernstein’s comparison theorem and a problem of Braess. (English) Zbl 0533.41021 Aequationes Math. 23, 98-107 (1981). Reviewer: L.Leindler MSC: 41A50 41A15 41A25 × Cite Format Result Cite Review PDF Full Text: DOI EuDML
Chakhkiev, M. A. Exponential polynomials deviating least from zero and optimal quadrature formulas. (English. Russian original) Zbl 0532.41036 Sov. Math., Dokl. 24, 443-447 (1981); translation from Dokl. Akad. Nauk SSSR 260, 1309-1312 (1981). Reviewer: M.A.Jimenez MSC: 41A55 41A50 41A25 × Cite Format Result Cite Review PDF
Wehrens, Matthias Best approximation on the unit sphere in \(R^ k\). (English) Zbl 0529.41024 Functional analysis and approximation, Proc. Conf., Oberwolfach 1980, ISNM 60, 233-245 (1981). MSC: 41A50 41A25 41A30 41A65 × Cite Format Result Cite Review PDF
Tikhonov, V. A. On the Laplace transform of orthogonal, step-Chebyshev nets. (Russian) Zbl 0528.53006 Differ. Geom. Mnogoobrazij Figur 12, 102-108 (1981). MSC: 53A07 × Cite Format Result Cite Review PDF
Rubinshteĭn, G. Sh. On the Chebyshev rank for problems of uniform approximation in the space of \(N\)-bounded functions. (English. Russian original) Zbl 0527.41024 Sov. Math., Dokl. 23, 600-604 (1981); translation from Dokl. Akad. Nauk SSR 258, 796-800 (1981). MSC: 41A65 41A50 41A10 × Cite Format Result Cite Review PDF
Taylor, Thomas D.; Murdock, John W. Application of spectral methods to the solution of Navier-Stokes equations. (English) Zbl 0526.76038 Comput. Fluids 9, 255-263 (1981). MSC: 76D05 76M99 × Cite Format Result Cite Review PDF Full Text: DOI
Loeb, Henry L. The application of weak Tchebycheff systems of numerical analysis. (English) Zbl 0525.41028 Vorlesungsr. SFB 72, Approximation Optimierung, Univ. Bonn 5, 89 p. (1981). MSC: 41A50 41A65 65D07 41A99 41A15 41A55 × Cite Format Result Cite Review PDF
Velikin, V. L. On an asymptotic connection between the approximation of periodic functions by splines and by trigonometric polynomials. (English. Russian original) Zbl 0523.41007 Sov. Math., Dokl. 23, 540-544 (1981); translation from Dokl. Akad. Nauk SSSR 258, 525-529 (1981). MSC: 41A15 41A25 42A10 41A05 41A50 × Cite Format Result Cite Review PDF
Tokarenko, A. M. From the history of the formation of the theory of mechanisms for the reproduction of mathematical dependencies. (Russian) Zbl 0522.01008 From the history of the development of physico-mathematical sciences, Collect. sci. Works, Kiev 1981, 80-88 (1981). MSC: 01A55 70-03 × Cite Format Result Cite Review PDF
Renes, J. J. A numerical method to compute an almost best Tchebysheff spline approximation to discrete data. (English) Zbl 0519.65007 Natl. Lucht-Ruimtevaartlab. NLR TR 81045 U, 18 p. (1981). MSC: 65D07 65D10 × Cite Format Result Cite Review PDF
Wolf, Jaques Approximation par des fractions rationnelles en norme \(L^ 2\) (application au filtrage numérique). (French) Zbl 0519.41018 Math., Rev. Anal. Numér. Théor. Approximation, Anal. Numér. Théor. Approximation 10, 119-127 (1981). MSC: 41A20 41A50 × Cite Format Result Cite Review PDF
Kolev, L. Time-optimal control of discrete linear systems. (Bulgarian) Zbl 0518.93040 Izv. VMEI ”Lenin”, Sofiya 36, No. 7, 89-97 (1981). MSC: 93C55 93C05 93B03 93B40 41A50 × Cite Format Result Cite Review PDF
Zhensykbaev, A. A. Monosplines of minimal norm and the best quadrature formulae. (English) Zbl 0518.41024 Russ. Math. Surv. 36, No. 4, 121-180 (1981). MSC: 41A55 41A15 41A50 × Cite Format Result Cite Review PDF Full Text: DOI
Popov, V. Yu. On exact constraints in Jackson inequalities for best spherical least square approximations. (English. Russian original) Zbl 0517.41012 Sov. Math. 25, No. 12, 73-86 (1981); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 1981, No. 12(235), 67-78 (1981). MSC: 41A17 41A65 41A50 × Cite Format Result Cite Review PDF
Yavor, Elic Extremal problems on moment cones and the Karlin representation theorem. (English) Zbl 0516.41024 J. Anal. Math. 39, 279-295 (1981). MSC: 41A50 41A65 × Cite Format Result Cite Review PDF Full Text: DOI
Doronin, V. G.; Ligun, A. A. On the best approximation with constraints. (English) Zbl 0515.41020 Approximation and function spaces, Proc. int. Conf., Gdansk 1979, 264-269 (1981). MSC: 41A50 41A30 × Cite Format Result Cite Review PDF
Khavinson, S. Ya. On a class of sharp estimates for polynomials, moments, and analytic functions. (English. Russian original) Zbl 0515.30001 Russ. Math. Surv. 36, No. 5, 157-158 (1981); translation from Usp. Mat. Nauk 36, No. 5(221), 199-200 (1981). MSC: 30A10 30C10 41A30 41A50 28A10 × Cite Format Result Cite Review PDF Full Text: DOI
Fischer, Horst-Jürgen Erfahrungen in der Optimierung von Netzwerkfunktionen nach Gauss und Tschebyscheff. (Dissertation). (German) Zbl 0514.94021 Fachbereich 19 der Technischen Hochschule Darmstadt. 121 S. (1981). MSC: 94C05 94A05 41A50 × Cite Format Result Cite Review PDF
Kovacheva, Ralitsa K. Best rational approximations in the space \(L_ 2\). (Russian) Zbl 0514.41017 PLISKA, Stud. Math. Bulg. 1981, No. 4, 15-22 (1981). MSC: 41A20 41A50 41A65 30E10 × Cite Format Result Cite Review PDF
Bel’tyukov, B. A.; Zykova, Z. P. On a class of iterative methods for the solution of nonlinear equations. (Russian) Zbl 0513.65032 Chislennye Metody Optimizatsii i ikh Prilozheniya, Prikl. Mat. 11, 175-178 (1981). MSC: 65J15 47J25 × Cite Format Result Cite Review PDF
Efimova, I. T.; Klokova, I. V. On the representation of a new special function by means of Chebyshev series. (English) Zbl 0511.42030 Sov. Math. 25, No. 11, 12-16 (1981). MSC: 42C15 41A45 78A40 × Cite Format Result Cite Review PDF
Temlyakov, V. N. Relations between best approximations of functions of two variables. (English) Zbl 0509.42004 Math. Notes 29, 51-58 (1981). MSC: 42A10 41A50 41A63 × Cite Format Result Cite Review PDF Full Text: DOI
Seneta, E. Least squares in pre-revolutionary Russia. (English) Zbl 0509.01011 History of mathematics, Proc. 1st Aust. Conf., Clayton/Aust. 1980, 168-174 (1981). MSC: 01A55 01A60 62-03 65-03 × Cite Format Result Cite Review PDF
Morozov, V. V. The forming of a generalized criterion in multicriterial problems. (Russian) Zbl 0508.90078 Mathematical methods in operations research, Collect. Artic., Moskva 1981, 69-76 (1981). MSC: 90C31 41A50 × Cite Format Result Cite Review PDF
Canuto, Claudio; Quarteroni, Alfio Spectral methods for hyperbolic equations. (English) Zbl 0508.65053 Rend. Sem. Mat., Torino 39, No. 1, 21-31 (1981). MSC: 65N35 65N30 35L65 × Cite Format Result Cite Review PDF
Tikhonov, V. A. Orthogonal planar graduated Chebyshev nets. (English) Zbl 0508.53005 Sov. Math. 25, No. 9, 54-58 (1981). MSC: 53A07 53A60 × Cite Format Result Cite Review PDF
Welker, Gunter Approximation mit einer erweiterten Klasse von Exponentialsummen. (German) Zbl 0508.42006 J. Approximation Theory 33, 281-287 (1981). MSC: 42A10 41A10 × Cite Format Result Cite Review PDF Full Text: DOI
Konyagin, S. V. Connectedness of sets in best approximation problems. (English. Russian original) Zbl 0508.41025 Sov. Math., Dokl. 24, 460-463 (1981); translation from Dokl. Akad. Nauk SSSR 261, 20-23 (1981). MSC: 41A65 41A55 41A50 46B20 54D05 46B10 × Cite Format Result Cite Review PDF
Jain, P. K.; Ahmad, Khalil Best approximation in Banach spaces with Schauder decompositions. (English) Zbl 0508.41022 Tamkang J. Math. 12, 59-66 (1981). MSC: 41A50 41A65 × Cite Format Result Cite Review PDF
van Dooren, R.; Vlassenbroeck, J. A computational method in optimal systems control with various applications. (English) Zbl 0507.93027 Control theory, Proc. 3rd IMA Conf., Sheffield 1980, 407-429 (1981). MSC: 93B40 42C10 93C15 65K10 × Cite Format Result Cite Review PDF
Poroshenko, V. N. Uniqueness of an algebraic polynomial of best approximation in the \(L_ 1 \)metric. (English) Zbl 0507.41021 Math. Notes 29, 416-421 (1981). MSC: 41A50 41A10 × Cite Format Result Cite Review PDF Full Text: DOI
Khavinson, S. Ya. On some class of exact inequalities for polynomials, moments and analytic functions. (Russian) Zbl 0507.41013 Sib. Mat. Zh. 22, No. 6, 188-207 (1981). MSC: 41A17 41A10 41A50 × Cite Format Result Cite Review PDF Full Text: EuDML
Berdyshev, V. I. Variation of the norms in the problem of best approximation. (English) Zbl 0506.41027 Math. Notes 29, 95-103 (1981). MSC: 41A50 × Cite Format Result Cite Review PDF Full Text: DOI
Akhlaghi, M.; Wolfe, Jerry M. Functions with many best \(L_2\)-approximations. (English) Zbl 0506.41026 J. Approximation Theory 33, 111-118 (1981). MSC: 41A50 41A52 × Cite Format Result Cite Review PDF Full Text: DOI
Tashev, Sp. On the distribution of the points of maximal deviation for the polynomials of best Chebyshev and Hausdorff approximations. (English) Zbl 0506.41024 Approximation and function spaces, Proc. int. Conf., Gdansk 1979, 791-799 (1981). MSC: 41A50 41A25 42A10 × Cite Format Result Cite Review PDF
Kolushov, A. V. Differentiability of the best approximation operator. (English) Zbl 0506.41023 Math. Notes 29, 295-306 (1981). MSC: 41A50 41A36 × Cite Format Result Cite Review PDF Full Text: DOI
Shvedov, A. S. Orders of coapproximation of functions by algebraic polynomials. (English) Zbl 0506.41004 Math. Notes 29, 63-70 (1981). MSC: 41A10 41A25 41A50 × Cite Format Result Cite Review PDF Full Text: DOI
England, A. H. Love’s integral and other relations between solutions to mixed boundary- value problems in potential theory. (English) Zbl 0505.73004 J. Aust. Math. Soc., Ser. B 22, 353-367 (1981). MSC: 74B99 74H99 31B20 × Cite Format Result Cite Review PDF Full Text: DOI
Doronin, V. G.; Ligun, A. A. Best one-sided approximation of certain classes of functions. (English) Zbl 0505.41017 Math. Notes 29, 220-233 (1981). MSC: 41A50 41A65 × Cite Format Result Cite Review PDF Full Text: DOI
Kroo, Andras Best \(L_1\)-approximation on finite point sets: rate of convergence. (English) Zbl 0505.41016 J. Approximation Theory 33, 340-352 (1981). MSC: 41A50 41A29 × Cite Format Result Cite Review PDF Full Text: DOI
Kovtunets, V. V. Inequalities for the derivative of algebraic polynomials bounded in equidistant points. (Russian) Zbl 0505.41010 Investigations in the theory of approximation of functions, Collect. sci. Works, Kiev 1981, 67-73 (1981). MSC: 41A17 × Cite Format Result Cite Review PDF
Hald, Jorgen A two stage algorithm for linearly constrained nonlinear \(l_ 1 \)optimization. (English) Zbl 0504.65037 Methods Oper. Res. 43, 87-103 (1981). MSC: 65K05 65D15 41A50 90C30 × Cite Format Result Cite Review PDF
Darst, R. B.; Legg, D. A.; Townsend, D. W. Prediction in Orlicz spaces. (English) Zbl 0504.46023 Manuscr. Math. 35, 91-103 (1981). MSC: 46E30 41A50 62F99 × Cite Format Result Cite Review PDF Full Text: DOI EuDML
Khudainazarov, S. Kh. On the order of the approximation of functions of two variables for the Fourier-Jacobi expansion. (Russian) Zbl 0504.42002 Vopr. Vychisl. Prikl. Mat. 66, 94-100 (1981). MSC: 42A10 41A50 41A25 26A15 × Cite Format Result Cite Review PDF
Soliev, Yu.; Solieva, M. A. On quadrature formulae of Chebyshev type. (Russian) Zbl 0504.41022 Izv. Akad. Nauk Tadzh. SSR, Otd. Fiz.-Mat. Geol.-Khim. Nauk 1981, No. 2(80), 74-76 (1981). MSC: 41A55 × Cite Format Result Cite Review PDF
Aliev, B. On iterative Chebyshev methods for an equation of second kind on the spectrum. (Russian) Zbl 0503.65039 Dokl. Akad. Nauk Tadzh. SSR 24, 527-531 (1981). MSC: 65J10 65R20 47A50 × Cite Format Result Cite Review PDF
Berens, Hubert Ein Problem über die beste Approximation in Hilberträumen. (German) Zbl 0503.41020 Functional analysis and approximation, Proc. Conf., Oberwolfach 1980, ISNM 60, 247-254 (1981). MSC: 41A65 41A50 × Cite Format Result Cite Review PDF
Geddes, K. O. Block structure in the Chebyshev-Padé table. (English) Zbl 0503.41011 SIAM J. Numer. Anal. 18, 844-861 (1981). MSC: 41A21 41A50 × Cite Format Result Cite Review PDF Full Text: DOI
Stolyarchuk, V. K. On the effective construction of polynomials which realize an approximation, close to the best one, for solutions of some differential equations. (Russian) Zbl 0503.41008 Investigations in the theory of approximation of functions, Collect. sci. Works, Kiev 1981, 89-97 (1981). MSC: 41A10 34A12 41A50 × Cite Format Result Cite Review PDF
Lapidot, Eitan On generalized mid-point convexity. (English) Zbl 0503.26007 Rocky Mt. J. Math. 11, 571-575 (1981). MSC: 26A51 × Cite Format Result Cite Review PDF Full Text: DOI
Sen, Dilip Kumar Characterizations of strict convexity. (English) Zbl 0502.46007 Bull. Calcutta Math. Soc. 73, 93-97 (1981). MSC: 46B03 46C99 46B20 41A50 × Cite Format Result Cite Review PDF
Jain, P. K.; Ahmad, Khalil Unconditional Schauder decompositions and best approximations in Banach spaces. (English) Zbl 0501.46014 Indian J. Pure Appl. Math. 12, 1456-1467 (1981). MSC: 46B15 41A65 41A50 × Cite Format Result Cite Review PDF
Popov, V. Averaged local moduli and their applications. (English) Zbl 0501.41006 Approximation and function spaces, Proc. int. Conf., Gdansk 1979, 572-583 (1981). MSC: 41A10 41A50 26A15 41A15 42A10 × Cite Format Result Cite Review PDF
Efimova, I. T.; Klokova, I. V. On representation of a certain new special function by Chebyshev series. (Russian) Zbl 0499.42012 Izv. Vyssh. Uchebn. Zaved., Mat. 1981, No. 11(234), 11-14 (1981). MSC: 42C15 41A45 × Cite Format Result Cite Review PDF
Dul’skaya, V. A. On the optimal (with respect to the accuracy) approximation of a function of \(n\)-variables in the class \(L2,\lambda,m,epsilon,g,p^n\). (Russian) Zbl 0499.41021 Applied programming methods, Collect. Artic., Kiev 1981, 37-45 (1981). MSC: 41A50 41A63 × Cite Format Result Cite Review PDF
Babenko, V. F.; Pichugov, S. A. Approximation in the mean of linear combinations of shifts of certain functions. (English. Russian original) Zbl 0499.41017 Ukr. Math. J. 33, 182-186 (1981); translation from Ukr. Mat. Zh. 33, 234-240 (1981). MSC: 41A45 42A85 41A50 42A10 × Cite Format Result Cite Review PDF Full Text: DOI
Kuz’mina, A. L. On the construction of the polynomial of best approximation for the derivative of a function in \(L_2[-1,1]\). (Russian) Zbl 0499.41006 Konstr. Teor. Funkts. Funkts. Anal. 3, 38-43 (1981). MSC: 41A10 42C05 41A50 × Cite Format Result Cite Review PDF
Erdős, Pál; Vertesi, Peter On the Lebesgue function of interpolation. (English) Zbl 0499.41004 Proc. 13th Symp. Ring theory, Okayama 1980, 299-309 (1981). Reviewer: D.D.Stancu. MSC: 41A05 41A17 65D05 × Cite Format Result Cite Review PDF
Carlitz, Leonard Enumeration of permutations by sequences. II. (English) Zbl 0499.05007 Fibonacci Q. 19, 398-406 (1981). MSC: 05A15 05A19 × Cite Format Result Cite Review PDF
Unbehauen, Rolf On the design of recursive digital low-pass filters with maximally flat pass-band and Chebyshev stop-band attenuation. (English) Zbl 0498.94015 Circuits and systems, Proc. IEEE int. Symp., Chicago/Ill. 1981, Vol. 2, 528-531 (1981). MSC: 94C05 × Cite Format Result Cite Review PDF
Zima, Vaclav; Dokoupil, Stanislav A chain of uniform Pi-networks with piezoelectric resonators in series arms. (English) Zbl 0498.73110 Acta Tech. CSAV 26, 443-463 (1981). MSC: 74F15 × Cite Format Result Cite Review PDF
Stojkova, L. S. Prelimit distribution functions and limit polynomials in a Chebyshev extremal problem. (English. Russian original) Zbl 0498.65066 Cybernetics 17, 824-835 (1982); translation from Kibernetika 1981, No. 6, 95-104 (1981). MSC: 65C99 65K05 62N05 90C15 × Cite Format Result Cite Review PDF
Tikhonov, V. A. Orthogonal plane graduated Chebyshev nets. (Russian) Zbl 0498.53004 Izv. Vyssh. Uchebn. Zaved., Mat. 1981, No. 9(232), 47-49 (1981). MSC: 53A07 53A60 × Cite Format Result Cite Review PDF
Baskakov, V. A. Methods of summing Fourier series which give best orders of approximation in classes C(epsilon), and their norms. (English) Zbl 0498.42003 Sov. Math. 25, No. 8, 73-77 (1981). MSC: 42A10 41A50 42A24 × Cite Format Result Cite Review PDF
Gudkov, V. V. Application of Chebyshev and Legendre polynomials to the computation of integrals. (Russian) Zbl 0497.65012 Latv. Mat. Ezheg. 25, 159-166 (1981). MSC: 65D32 41A55 × Cite Format Result Cite Review PDF
Gavrushenko, E. V.; Prupis, V. N. The stability of bases in finite-dimensional vector spaces. (English. Russian original) Zbl 0496.65022 U.S.S.R. Comput. Math. Math. Phys. 21, No. 5, 236-240 (1981); translation from Zh. Vychisl. Mat. Mat. Fiz. 21, 1312-1315 (1981). MSC: 65F30 15A03 × Cite Format Result Cite Review PDF Full Text: DOI
Dynkin, E. M. A construction characteristic of the classes of S. L. Sobolov and O. V. Besov. (Russian) Zbl 0496.46021 Tr. Mat. Inst. Steklova 155, 41-76 (1981). MSC: 46E35 41A10 41A50 × Cite Format Result Cite Review PDF
Scherer, Karl On optimal global error bounds obtained by scaled local error estimates. (English) Zbl 0495.65006 Numer. Math. 36, 151-176 (1981). MSC: 65D15 41A50 65G99 × Cite Format Result Cite Review PDF Full Text: DOI EuDML
Leindler, L. On imbedding of classes of functions connected with strong approximation of Fourier series. (English) Zbl 0495.42009 Approximation and function spaces, Proc. int. Conf., Gdansk 1979, 394-407 (1981). MSC: 42A24 41A50 42A20 × Cite Format Result Cite Review PDF
Koshcheev, V. A. On the structure of suns in Banach spaces. (English) Zbl 0495.41018 Approximation and function spaces, Proc. int. Conf., Gdansk 1979, 371-376 (1981). MSC: 41A50 41A52 41A65 41A45 × Cite Format Result Cite Review PDF
Helfrich, Hans-Peter Simultaneous approximation in negative norms of arbitrary order. (English) Zbl 0495.41010 RAIRO, Anal. Numér. 15, 231-235 (1981). MSC: 41A28 41A25 41A50 × Cite Format Result Cite Review PDF Full Text: DOI EuDML
Kapoor, G. P.; Nautiyal, A. Polynomial approximation of an entire function of slow growth. (English) Zbl 0495.41005 J. Approximation Theory 32, 64-75 (1981). MSC: 41A10 41A25 30D15 41A50 × Cite Format Result Cite Review PDF Full Text: DOI
Wolfe, Jerry M. Interpolation and best \(L_ p \)local approximation. (English) Zbl 0495.41003 J. Approximation Theory 32, 96-102 (1981). MSC: 41A05 41A30 41A50 × Cite Format Result Cite Review PDF Full Text: DOI