An analytic continuation of random analytic functions (in Ukrainian)

Let $(eta_n(omega))$ be a sequence of independent randomvariables such that $eta_n(omega)$ takes the values $-1$ and$1$ with the probabilities $p_n$ and $1-p_n$, respectively. Put$q_n=min{p_n,1-p_n}$. Then, for each complex sequence$(a_n)$ such that$varlimsuplimits_{noinfty}oot{n}of{|a_n|}=1$, theci...

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Bibliographic Details
Main Author: P. V. Filevych
Format: Article
Language:German
Published: Ivan Franko National University of Lviv 2011-11-01
Series:Математичні Студії
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Online Access:http://matstud.org.ua/texts/2011/36_2/128-132.pdf
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Summary:Let $(eta_n(omega))$ be a sequence of independent randomvariables such that $eta_n(omega)$ takes the values $-1$ and$1$ with the probabilities $p_n$ and $1-p_n$, respectively. Put$q_n=min{p_n,1-p_n}$. Then, for each complex sequence$(a_n)$ such that$varlimsuplimits_{noinfty}oot{n}of{|a_n|}=1$, thecircle ${zinmathbb{C}colon |z|=1}$ is the natural boundaryfor the function $f_omega(z)=sum_{n=0}^inftya_neta_n(omega)z^n$ almost surely if and only if thecondition $sum_{k=0}^infty q_{n_k}=+infty$ holds for everyincreasing sequence $(n_k)$ of nonnegative integers such that$varliminflimits_{koinfty}frac{n_k}k<+infty$.
ISSN:1027-4634