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JOURNALS // Ufimskii Matematicheskii Zhurnal // Archive

Ufimsk. Mat. Zh., 2017 Volume 9, Issue 4, Pages 22–35 (Mi ufa400)

This article is cited in 4 papers

Pavlov–Korevaar–Dixon interpolation problem with majorant in convergence class

R. A. Gaisin

Bashkir State University, Zaki Validi str. 32, 450077, Ufa, Russia

Abstract: We study an interpolation problem in the class of entire functions of exponential type determined by some majorant in a convergence class (non-quasianalytic majorant). In a smaller class, when the majorant possessed a concavity property, similar problem was studied by B. Berndtsson with the nodes at some subsequence of natural numbers. He obtained a solvability criterion for this interpolation problem. At that, he applied first the Hörmander method for solving a $\overline{\partial}$-problem. In works by A.I. Pavlov, J. Korevaar and M. Dixon, interpolation sequences in the Berndtsson sense were applied successfully in a series of problems in the complex analysis. At that, there was found a relation with approximative properties of the system of powers $\{z^{p_n}\}$ and with the well known Polya and Macintyre problems.
In this paper we establish the criterion of the interpolation property in a more general sense for an arbitrary sequence of real numbers. In the proof of the main theorem we employ a modification of the Berndtsson method.

Keywords: interpolation sequence, entire function, convergence class.

UDC: 517.53

MSC: 30E05

Received: 14.09.2017


 English version:
Ufa Mathematical Journal, 2017, 9:4, 22–34

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