Baire categories and classes of analytic functions in which the Wiman-Valiron type inequality can be almost surely improved
Complex Variables
2012-06-19 v1
Abstract
Let f(z)=∑n=0+∞anzn\ (z∈C)\ be an analytic function in the unit disk and ft be an analytic function of the form ft(z)=∑n=0+∞aneiθntzn, where t∈R, θn∈N, and h be a positive continuous function on (0,1) increasing to +∞ and such that ∫r01h(r)dr=+∞,r0∈(0,1).\ If the sequence (θn)n≥0 satisfies the inequality n→+∞limlnn1lnθn+1−θnθn≤δ∈[0,1/2), then for all analytic functions ft almost surely for t there exists a set E=E(δ,t)⊂(0,1) such that ∫Eh(r)dr<+∞ and substackr→1−0r∈/Esubstacklim2lnh(r)+lnln{h(r)μf(r)}lnMf(r,t)−lnμf(r)≤4+3δ1+2δ, where Mf(r,t)=max{∣ft(z)∣:∣z∣=r},\ μf(r)=max{∣an∣rn:n≥0}\ for r∈[0,1).
Cite
@article{arxiv.1206.3655,
title = {Baire categories and classes of analytic functions in which the Wiman-Valiron type inequality can be almost surely improved},
author = {A. O. Kuryliak and O. B. Skaskiv and I. E. Chyzhykov},
journal= {arXiv preprint arXiv:1206.3655},
year = {2012}
}
Comments
17 pages