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JOURNALS // Izvestiya Rossiiskoi Akademii Nauk. Seriya Matematicheskaya // Archive

Izv. Akad. Nauk SSSR Ser. Mat., 1978 Volume 42, Issue 5, Pages 965–971 (Mi im1886)

This article is cited in 1 paper

On the complete regularity of growth of the Borel transform of the analytic continuation of the associated function, which has a finite number of singular points

N. V. Govorov, N. M. Chernykh


Abstract: The following theorem is proved. Let $A(z)$ be an entire function of exponential type, and let its Borel transform $a(z)$ satisfy the following conditions: 1) $a(z)$ can be analytically continued to a certain Riemann surface $R$ with finite number of branch points, and it has only finitely many singularities $z_k$ on $R$; 2) in any plane with cuts by parallel rays issuing from the $z_k$, a branch of $z_k$ satisfies
$$ \varlimsup_{z\to\infty}\frac{\ln|a(z)|}{|z|}\leq0. $$

Then $A(z)$ has completely regular growth. From this theorem it follows, in particular, that if $a(z)$ is an algebraic function or a single-valued function with a finite number of singularities, then $A(z)$ has completely regular growth.
Bibliography: 6 titles.

UDC: 517.53

MSC: 30D15

Received: 01.02.1977


 English version:
Mathematics of the USSR-Izvestiya, 1979, 13:2, 253–259

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