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zbMATH Open
Article . 1995
Data sources: zbMATH Open
MATHEMATICA SCANDINAVICA
Article . 1995 . Peer-reviewed
Data sources: Crossref
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Entire Functions with Asymptotic Functions.

Entire functions with asymptotic functions
Authors: Hinkkanen, A.; Rossi, John;

Entire Functions with Asymptotic Functions.

Abstract

Let \(A\) be the class of plane curves \(z = z(t)\) without self-intersections such that \(z(0)= 0\), \(\lim_{t \to \infty} z(t) = \infty\), for any \(T \in (0, \infty)\) the curve \(z = z(t)\), \(t \in [0,T]\) be a union of a finite number of line segments. Let \({\mathcal L}_1\), \({\mathcal L}_2 \in A\) and let \(D\) be the open set such that \(\partial D = {\mathcal L}_1 \cup {\mathcal L}_2\). For holomorphic functions \(f\) in \(D\) the value \(M(r,D,f)\) is defined as \[ M(r,D,f) = \sup \biggl\{ \bigl |f (re^{i \theta}) \bigr |: re^{i \theta} \in D \biggr\}. \] The authors prove: Theorem. Let \({\mathcal L}_1\), \({\mathcal L}_2 \in A\), \(f\) be holomorphic in \(D\) and continuous up to the boundary. Let \(\eta \in (0, \pi)\) and the angular measure of the intersection \(D \cap \{z : |z |= r\}\) does not exceed \(2 \eta\). Let \(a(z)\) and \(b(z)\) be distinct entire functions of order strictly less then \(1/(2 + 2 \eta/ \pi)\). Let \(\lim_{{z \to \infty \atop z \in {\mathcal L}_1}} (f(z) - a(z)) = 0\), \(\lim_{{z \to \infty \atop z \in {\mathcal L}_2}} (f(z) - b(z)) = 0\). Then \(\varliminf_{z \to \infty} {\log M (r,D,f) \over r^{\pi/2 \eta}} > 0\). Earlier (1995) such type theorem with \({\mathcal L}_1\) and \({\mathcal L}_2\) being the rays was proved by Dudley Ward and Fenton.

Country
Germany
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Keywords

peak of Polya, 510.mathematics, Entire functions of one complex variable (general theory), Special classes of entire functions of one complex variable and growth estimates, subharmonic function, conjecture of Hayman, Article

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
2
Average
Average
Average
Green
bronze