English

Necessary and sufficient conditions for zero subsets of holomorphic functions

Complex Variables 2020-12-24 v1

Abstract

Let DD be a domain in the complex plane, MM be an extended real function on DD. If ff is a non-zero holomorphic function on DD with an upper constraint fexpM|f|\leq \exp M on this domain DD, then it is natural to expect that there must be some upper constraints on the distribution of zeros of this holomorphic function exclusively in terms of the function MM and the geometry of the domain DD. We have investigated this question in detail in our previous works in the case when MM is a subharmonic function and the domain DD is arbitrary or with a non-polar boundary. The answer was given in terms of limiting the distribution of zeros of ff from above via the Riesz measure of the subharmonic function MM. In this article, the function MM is the difference of subharmonic functions, or a δ\delta-subharmonic function, and the upper constraints are given in terms of the Riesz charge of this δ\delta-subharmonic function MM. These results are also new to a certain extent for the subharmonic function MM. The case when the domain D is the complex plane is considered separately. For the complex plane, it is possible to reach the criterion level.

Keywords

Cite

@article{arxiv.2012.12660,
  title  = {Necessary and sufficient conditions for zero subsets of holomorphic functions},
  author = {B. N. Khabibullin and F. B. Khabibullin},
  journal= {arXiv preprint arXiv:2012.12660},
  year   = {2020}
}

Comments

12 pages

R2 v1 2026-06-23T21:17:22.448Z