On one filtration of holomorphic functions

Fuente: arXiv
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Main Author: Jacobzon, Fiana
Format: Preprint
Published: 2025
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author Jacobzon, Fiana
author_facet Jacobzon, Fiana
contents In this work we consider a family of function classes constructed by means of the Gauss hypergeometric function $_2F_1(1,1;2;z) =-\frac{\log(1-z)}{z}$. We demonstrate that this family, in fact, constitutes classes of analytic functions subject to prescribed constraints on their derivatives. For these classes we obtain some geometric characteristics, including sharp coefficient estimates. Moreover, we show that this family naturally provides a filtration of infinitesimal generators, and investigate the corresponding dynamical behavior of the associated semigroups. It is interesting that this filtration links to the Ma--Minda starlike functions.
format Preprint
id arxiv_https___arxiv_org_abs_2512_21405
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle On one filtration of holomorphic functions
Jacobzon, Fiana
Complex Variables
In this work we consider a family of function classes constructed by means of the Gauss hypergeometric function $_2F_1(1,1;2;z) =-\frac{\log(1-z)}{z}$. We demonstrate that this family, in fact, constitutes classes of analytic functions subject to prescribed constraints on their derivatives. For these classes we obtain some geometric characteristics, including sharp coefficient estimates. Moreover, we show that this family naturally provides a filtration of infinitesimal generators, and investigate the corresponding dynamical behavior of the associated semigroups. It is interesting that this filtration links to the Ma--Minda starlike functions.
title On one filtration of holomorphic functions
topic Complex Variables
url https://arxiv.org/abs/2512.21405