Regularity and growth conditions for fast escaping points of entire functions

preprint2016arXivOpen access

Abstract

Let ff be a transcendental entire function. The quite fast escaping set, Q(f)Q(f), and the set Q2(f),Q_2(f), which was defined recently, are equal to the fast escaping set, A(f),A(f), under certain conditions. In this paper we generalise these sets by introducing a family of sets Qm(f)Q_m(f), m∈N.m \in \mathbb{N}. We also give one regularity and one growth condition which imply that Qm(f)Q_m(f) is equal to A(f)A(f) and we show that all functions of finite order and positive lower order satisfy Qm(f)=A(f)Q_m(f)=A(f) for any mm. Finally, we relate the new regularity condition to a sufficient condition for Q2(f)=A(f)Q_2(f)=A(f) introduced in recent work.

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