The growth at infinity of a sequence of entire functions of bounded orders

Details The growth at infinity of a sequence of entire functions of bounded orders The growth at infinity of a sequence of entire functions of bounded orders

2007-11-19

arxiv.org/abs/0711.2808v2

Mathematics

Complex Variables

19 pages. Some typos are corrected

Scientific paper

In this paper we shall consider the growth at infinity of a sequence $(P_n)$ of entire functions of bounded orders. Our results extend the results in \cite{trong-tuyen2} for the growth of entire functions of genus zero. Given a sequence of entire functions of bounded orders $P_n(z)$, we found a nearly optimal condition, given in terms of zeros of $P_n$, for which $(k_n)$ that we have \begin{eqnarray*} \limsup_{n\to\infty}|P_n(z)|^{1/k_n}\leq 1 \end{eqnarray*} for all $z\in \mathbb C$ (see Theorem \ref{theo5}). Exploring the growth of a sequence of entire functions of bounded orders lead naturally to an extremal function which is similar to the Siciak's extremal function (See Section 6).

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