arXiv subjects

F. B. Khabibullin

Publications and source records attributed to F. B. Khabibullin.

4 recordsLinked to original sources

arXiv2020

Necessary and sufficient conditions for zero subsets of holomorphic functions

Let $D$ be a domain in the complex plane, $M$ be an extended real function on $D$. If $f$ is a non-zero holomorphic function on $D$ with an upper constraint $|f|\leq \exp M$ on this domain $D$, 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 $M$ and the geometry of the domain $D$. We have investigated this question in detail in our previous works in the case when $M$ is a subharmonic function and the domain $D$ is arbitrary or with a non-polar boundary. The answer was given in terms of limiting the distribution of zeros of $f$ from above via the Riesz measure of the subharmonic function $M$. In this article, the function $M$ is the difference of subharmonic functions, or a $δ$-subharmonic function, and the upper constraints are given in terms of the Riesz charge of this $δ$-subharmonic function $M$. These results are also new to a certain extent for the subharmonic function $M$. 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.

math.CV↗

arXiv2018

On the Distribution of Zero Sets of Holomorphic Functions. III. Conversion Theorems

Let $D$ be a domain in the complex plane $\mathbb C$. It follows from first part of our work that if a non-zero holomorphic function $f$ on $D$ vanishes on a sequence ${\sf Z}\subset D$ and satisfies $|f|\leq M$ on $D$, where $M$ is a subharmonic function on $D$, then the the distribution of ${\sf Z}$ is subordinated to the Riesz measure $ν_M$ of $M$ in a certain sense. Here we show that this result is "almost reversible".

math.CV↗

arXiv2018

Zero sets of holomorphic functions in the unit ball: non-radial growth characteristics

Let $f$ be a nonzero holomorphic function in the unit ball $\mathbb B$ of the $n$-dimensional complex Euclidean space $\mathbb C^n$ such that the function $f$ vanishes on the set ${\sf Z}\subset \mathbb B$ and satisfies the constraint $|f|\leq \exp M$ on $\mathbb B$, where $M\not\equiv \pm \infty$ is $δ$-subharmonic function on $\mathbb B$ with Riesz charge $μ_M$. We give a scale of integral uniform constraints from above on the distribution of the set ${\sf Z}$ via the charge $ν_M$ in terms of $(2n-2)$-Hausdorff measure of the set $\sf Z$, as well as test convex radial functions and $ρ$-subspherical functions on the unit sphere $\mathbb S \subset \mathbb C^n$, which at $n=1$ can be interpreted as $2π$-periodic $ρ$-trigonometrically convex functions on the real axis $\mathbb R \subset \mathbb C$.

math.CV↗

arXiv2016

On uniqueness sets for spaces of holomorphic functions

In this article are improved and refined some of our results prior to our recent article from the journal "Russian Mathematics (Izvestiya VUZ. Matematika)" in 2015 at the expense of our latest results in 2016 on lower estimates of subharmonic functions by the logarithm module nonzero holomorphic function.

math.CV↗