On holomorphicity of Hartogs series satisfying algebraic relations

Fuente: arXiv
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Autores principales: Aoki, Hiroki, Saito, Kyoji
Formato: Preprint
Publicado: 2024
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author Aoki, Hiroki
Saito, Kyoji
author_facet Aoki, Hiroki
Saito, Kyoji
contents We consider a formal power series in one variable whose coefficients are holomorphic functions in a given multidimensional complex domain. Assume the following two conditions on the series. (C1) The restriction of the series at each point of a dense subset of the domain converges in an open disk of a fixed radius. (C2) The series is algebraic over the ring of holomophic functions on the direct product space of the domain and the disk. The main theorem of the present note is that the series defines a holomorphic function on the direct product space. We also give an example where the condition (C2) is essentially necessary.
format Preprint
id arxiv_https___arxiv_org_abs_2411_10641
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle On holomorphicity of Hartogs series satisfying algebraic relations
Aoki, Hiroki
Saito, Kyoji
Complex Variables
primary: 32A05, secondary: 32A10, 32D15
We consider a formal power series in one variable whose coefficients are holomorphic functions in a given multidimensional complex domain. Assume the following two conditions on the series. (C1) The restriction of the series at each point of a dense subset of the domain converges in an open disk of a fixed radius. (C2) The series is algebraic over the ring of holomophic functions on the direct product space of the domain and the disk. The main theorem of the present note is that the series defines a holomorphic function on the direct product space. We also give an example where the condition (C2) is essentially necessary.
title On holomorphicity of Hartogs series satisfying algebraic relations
topic Complex Variables
primary: 32A05, secondary: 32A10, 32D15
url https://arxiv.org/abs/2411.10641