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LOGARITHMIC CONVEXITY OF AREA INTEGRAL MEANS FOR ANALYTIC FUNCTIONS II

Published online by Cambridge University Press:  14 October 2014

CHUNJIE WANG
Affiliation:
Department of Mathematics, Hebei University of Technology, Tianjin 300401, China email wcj@hebut.edu.cn
JIE XIAO
Affiliation:
Department of Mathematics and Statistics, Memorial University of Newfoundland, St. John’s, NL A1C 5S7, Canada email jxiao@mun.ca
KEHE ZHU*
Affiliation:
Department of Mathematics and Statistics, State University of New York, Albany, NY 12222, USA email kzhu@math.albany.edu
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Abstract

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For $0<p<\infty$ and $-2\leq {\it\alpha}\leq 0$ we show that the $L^{p}$ integral mean on $r\mathbb{D}$ of an analytic function in the unit disk $\mathbb{D}$ with respect to the weighted area measure $(1-|z|^{2})^{{\it\alpha}}\,dA(z)$ is a logarithmically convex function of $r$ on $(0,1)$.

Type
Research Article
Copyright
Copyright © 2014 Australian Mathematical Publishing Association Inc. 

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