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 Trudy Mat. Inst. Steklova, 2021, Volume 312, Pages 98–110 (Mi tm4127)

Interpolation of Spaces of Functions of Positive Smoothness on a Domain

O. V. Besov

Steklov Mathematical Institute of Russian Academy of Sciences, ul. Gubkina 8, Moscow, 119991 Russia

Abstract: Interpolation spaces are described for spaces of functions of positive smoothness on a domain $G$ of the Euclidean space $\mathbb R^n$ that satisfies the flexible cone condition. As a consequence, multiplicative estimates for the norms of functions are obtained. The arguments are based on integral representations of functions over a flexible cone in terms of the local approximations of functions by polynomials and on estimates of the arising convolution operators.

DOI: https://doi.org/10.4213/tm4127

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English version:
Proceedings of the Steklov Institute of Mathematics, 2021, 312, 91–103

Bibliographic databases:

UDC: 517.518.2
Received: May 22, 2020
Revised: September 5, 2020
Accepted: November 17, 2020

Citation: O. V. Besov, “Interpolation of Spaces of Functions of Positive Smoothness on a Domain”, Function Spaces, Approximation Theory, and Related Problems of Analysis, Collected papers. In commemoration of the 115th anniversary of Academician Sergei Mikhailovich Nikol'skii, Trudy Mat. Inst. Steklova, 312, Steklov Math. Inst., Moscow, 2021, 98–110; Proc. Steklov Inst. Math., 312 (2021), 91–103

Citation in format AMSBIB
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