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This article is cited in 1 scientific paper (total in 1 paper)
BRIEF MESSAGE
Refinement of Bernstein–Nikolskii constant for the sphere with Dunkl weight in the case of octahedron group
D. V. Gorbacheva, N. N. Dobrovol'skiiab, I. A. Martyanova a Tula State University (Tula)
b Tula State Lev Tolstoy Pedagogical University (Tula)
Abstract:
We continue the study of the sharp Bernstein–Nikolskii constants for spherical polynomials in the space $L^{p}(\mathbb{S}^{d})$ with the Dunkl weight. We consider the model case of the octahedral reflection group $\mathbb{Z}_{2}^{d+1}$ and weight $\prod_{j=1}^{d+1}|x_{j}|^{2\kappa_{j}} $ when the explicit form of the Dunkl intertwining operator is known. We show that for $\min \kappa=0$ the multidimensional problem is reduced to the one-dimensional problem for the Gegenbauer weight, otherwise not.
Keywords:
spherical polynomial, reproducing kernel, Dunkl weight, Bernstein–Nikoskii constant.
Received: 15.09.2021 Accepted: 05.12.2021
Citation:
D. V. Gorbachev, N. N. Dobrovol'skii, I. A. Martyanov, “Refinement of Bernstein–Nikolskii constant for the sphere with Dunkl weight in the case of octahedron group”, Chebyshevskii Sb., 22:5 (2021), 354–358
Linking options:
https://www.mathnet.ru/eng/cheb1140 https://www.mathnet.ru/eng/cheb/v22/i5/p354
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