Abstract
We consider the problem of application of mixed methods to the construction of algorithms, optimal in accuracy, for the calculation of multidimensional singular integrals with Hilbert-type kernels. We propose a method for the optimization of cubature formulas for singular integrals with Hilbert-type kernels based on the theory of quasiwidths.
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References
W. J. Gordon, “Spline-blending surface interpolation through curve networks,” J. Math. Mech., 18, 931–951 (1969).
M. Sh. Shabozov, “Approximation of continuous and differentiable periodic functions of two variables by interpolational mixed splines,” in: Problems in the Theory of Approximation of Functions [in Russian], Institute of Mathematics, Ukrainian Academy of Sciences, Kiev (1980), pp. 166–172.
A. N. Vaindiner, “Approximation of continuous and differentiable periodic functions of many variables by generalized polynomials (finite linear superposition of functions of smaller number of variables),” Doki Akad. Nauk SSSR, 192, No. 3, 483–486 (1970).
N. P. Korneichuk and S. V. Pereverzev, “On the approximation of functions of two variables by operators constructed on the basis of one-dimensional operators,” in: Theory of Functions and Topology [in Russian], Institute of Mathematics, Ukrainian Academy of Sciences, Kiev (1983), pp. 43–49.
M.-B. A. Babaev, “Approximation of Sobolev classes of functions by sums of products of functions of smaller number of variables,” Tr. Mat. Inst. Akad. Nauk SSSR, 180, 30–32 (1987).
V. N. Temlyakov, “Approximation of functions with bounded mixed derivative,” Tr. Mat. Inst. Akad. Nauk SSSR, 178, 3–112 (1986).
S. B. Vakarchuk, “On approximation of differentiable functions of many variables,” Mat. Zametki, 48, Issue 3, 37–44 (1990).
S. B. Vakarchuk, “Quasiwidths of classes of functions in certain Banach spaces of analytic functions of many complex variables,” Dokl. Akad. Nauk Ukr. SSR, Ser. A, No. 3, 26–31 (1992).
S. B. Vakarchuk, “Renewal of linear functionals on classes of differentiable functions of two variables by using certain generalized information,” Izv. Vyssh. Uchebn. Zaved, Ser. Mat., No. 2, 11–17 (1990).
B. G. Gabdulkhaev, “Cubature formulas for multidimensional singular integrals. I,” Izv. Mat. Inst. Bolg. AN, 11, 181–196 (1970).
B. G. Gabdulkhaev, “Cubature formulas for multidimensional singular integrals. II,” Izv. Vyssh. Uchebn. Zaved. Mat., No. 4, 3–13 (1975).
B. G. Gabdulkhaev, Optimal Approximations of Linear Problems [in Russian], Kazan University, Kazan (1980).
M. Sh. Shabozov, “An approach to the investigation of optimal quadrature formulas for singular integrals with fixed singularity,” Ukr. Mat. Zh., 47, No. 9, 1300–1304 (1995).
L. D. Gogoladze, “On the existence of conjugate functions of many variables,” Mat. Sb., 225, No. 3, 481–488 (1984).
N. Ya. Krupnik, Banach Algebras with Symbol and Singular Integral Operators [in Russian], Shtiintsa, Kishinev 1984.
N. P. Komeichuk, Extremal Problems in the Theory of Approximation [in Russian], Nauka, Moscow 1976.
N. K. Bari, Trigonometric Series [in Russian], Fizmatgiz, Moscow 1961.
V. K. Dzyadyk, Introduction to the Theory of Uniform Polynomial Approximation of Functions [in Russian], Nauka, Moscow 1977.
V. M. Tikhomirov, Some Problems in the Theory of Approximation [in Russian], Moscow University, Moscow (1976).
A. N. Vaindiner, “Estimation of the remainder of a generalized Fourier series for differentiable functions of two variables,” Dokl. Akad. NaukSSSR, 184, No. 3, 511–513 (1969).
A. F. Timan, Theory of Approximation of Functions of Real Variable [in Russian], Fizmatgiz, Moscow 1960.
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Vakarchuk, S.B., Shabozov, M.S. Quasiwidths and optimization of methods of mixed approximation of multidimensional singular integrals with kernels of hilbert type. Ukr Math J 48, 846–865 (1996). https://doi.org/10.1007/BF02384171
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DOI: https://doi.org/10.1007/BF02384171