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Vestnik Moskovskogo Universiteta. Seriya 1. Matematika. Mekhanika, 2009, Number 4, Pages 22–28
(Mi vmumm885)
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This article is cited in 1 scientific paper (total in 1 paper)
Mathematics
Expansion over a system of shifts of pyramidal functions
T. P. Lukashenko, S. M. Lytkin Lomonosov Moscow State University, Faculty of Mechanics and Mathematics
Abstract:
A method for approximation of functions of two variables by a linear combination of nonnegative piecewise linear functions with a compact support is presented. The crucial idea of this method consists in an “integral” calculation method for the coefficients. The accuracy of the approximation in the spaces of continuous and integrable functions is proved to have the same order as the best approximation by piecewise linear functions.
Key words:
piecewise linear function of two variables, compact support, “integral” coefficients.
Received: 25.11.2008
Citation:
T. P. Lukashenko, S. M. Lytkin, “Expansion over a system of shifts of pyramidal functions”, Vestnik Moskov. Univ. Ser. 1. Mat. Mekh., 2009, no. 4, 22–28
Linking options:
https://www.mathnet.ru/eng/vmumm885 https://www.mathnet.ru/eng/vmumm/y2009/i4/p22
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