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20122024
most citedEstimates of the Kobayashi and quasi-hyperbolic distances

20 citations

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22 papers · 1 filter

math.CV2024

A Picard little theorem for entire functions of matrices

Oleg Mushkarov, Nikolai Nikolov

An analog of Picard's little theorem for entire functions of matrices is proved.

math.CV2023

Explicit universal bounds for squeezing functions of (-)convex domains

Gautam Bharali, Nikolai Nikolov

We prove two separate lower bounds -- one for nondegenerate convex domains and the other for nondegenerate -convex (but not necessarily convex) domains -- for the squee…

math.CV2023★ 3 cited

A Gehring-Hayman inequality for strongly pseudoconvex domains

Łukasz Kosiński, Nikolai Nikolov, Pascal J. Thomas

We prove that in a strongly pseudoconvex domain with smooth boundary, then the length of a geodesic for the Kobayashi-Royden infinitesimal metric between two points is bounded by a…

math.CV2022

Strong localizations of the Kobayashi distance

Nikolai Nikolov, Ahmed Yekta Ökten

Recently, the visibility property of Kobayashi (almost) geodesics has been used to provide localizations of the Kobayashi distance. In this note, we provide sufficient growth condi…

math.CV2022★ 7 cited

Local and global notions of visibility with respect to Kobayashi distance, a comparison

Nikolai Nikolov, Ahmed Yekta Ökten, Pascal J. Thomas

In this note, we introduce the notion of visible boundary points with respect to Kobayashi distance for domains in complex euclidean space. Following the work of Sarkar, we obtain…

math.CV2022★ 4 cited

Lower estimates of the Kobayashi distance and limits of complex geodesics

Łukasz Kosiński, Nikolai Nikolov

It is proved for a strongly pseudoconvex domain in with -smooth boundary that any complex geodesic through every two close points of sufficient…

math.CV2022★ 2 cited

Strongly Goldilocks Domains, quantitative Visibility, and Applications

Nikolai Nikolov, Ahmed Yekta Ökten

In the last decade, G. Bharali and A. Zimmer defined a class of domains called Goldilocks domains and they showed that such a domain satisfies a visibility condition with respect t…

math.CV2020★ 1 cited

Growth of Sibony metric and Bergman kernel for domains with low regularity

Nikolai Nikolov, Pascal J. Thomas

It is shown that even a weak multidimensional Suita conjecture fails for any bounded non-pseudoconvex domain with boundary: the product of the Bergman kernel by the…

math.CV2019

An analogue of the squeezing function for projective maps

Nikolai Nikolov, Pascal J. Thomas

In the spirit of Kobayashi's applications of methods of invariant metrics to questions of projective geometry, we introduce a projective analogue of the complex squeezing function.…

math.CV2018★ 3 cited

Comparison of the Bergman kernel and the Carathéodory--Eisenman volume

Nikolai Nikolov, Pascal J. Thomas

It is proved that for any domain in the Caratheodory--Eisenman volume is comparable with the volume of the indicatrix of the Caratheodory metric up to small/large con…

math.CV2018★ 15 cited

On the squeezing function and Fridman invariants

Nikolai Nikolov, Kaushal Verma

For a domain , the relationship between the squeezing function and the Fridman invariants is clarified. Furthermore, localization properties of these functio…

math.CV2018★ 7 cited

Estimates for the squeezing function near strictly pseudoconvex boundary points with applications

Nikolai Nikolov, Maria Trybuła

An extension of the estimates for the squeezing function of strictly pseudoconvex domains obtained recently by J. E. Fornæss and E. Wold in \cite{FW1} is applied to derive a sharp…

math.CV2017★ 18 cited

Behavior of the squeezing function near h-extendible boundary points

Nikolai Nikolov

It is shown that if the squeezing function tends to one at an h-extendible boundary point of a -smooth, bounded pseudoconvex domain, then the point is strictly p…

math.CV2016★ 17 cited

Boundary behavior of the squeezing functions of -convex domains and plane domains

Nikolai Nikolov, Lyubomir Andreev

It is shown that any non-degenerate -convex domain in is uniformly squeezing. It is also found the precise behavior of the squeezing function near a Dini-s…

math.CV2015★ 1 cited

On a lower bound of the Kobayashi metric

Nikolai Nikolov

It is shown that a lower bound of the Kobayashi metric of convex domains in C^n does not hold for non-convex domains.

math.CV2015★ 4 cited

Boundary behavior of invariant functions on planar domains

Nikolai Nikolov, Maria Trybula, Lyubomir Andreev

Precise behavior of the Caratheodory, Kobayashi and Bergman metrics and distances near smooth boundary points of domains in C is found under different assumptions of regularity.

math.CV2015★ 20 cited

Estimates of the Kobayashi and quasi-hyperbolic distances

Nikolai Nikolov, Lyubomir Andreev

Universal upper bounds for the Kobayashi and quasi-hyperbolic distances near Dini-smooth boundary points of domains in $\C^n$ and respectively, are obtained.

math.CV2014★ 1 cited

Two remarks on the Suita conjecture

Nikolai Nikolov

It is shown that the weak multidimensional Suita conjecture fails for any bounded non-pseudoconvex domain with -smooth boundary. On the other hand, it is prove…

math.CV2014★ 4 cited

Estimates of the Bergman distance on Dini-smooth bounded planar domains

Nikolai Nikolov, Maria Trybuła

Precise estimates for the Bergman distances of Dini-smooth bounded planar domains are given. These estimates imply that on such domains the Bergman distance almost coincides with t…

math.CV2014★ 15 cited

The Kobayashi balls of C-convex domains

Nikolai Nikolov, Maria Trybula

A pure geometric description of the Kobayashi balls of C-convex domains is given in terms of the so-called minimal basis.

math.CV2014★ 10 cited

Gromov (non)hyperbolicity of certain domains in

Nikolai Nikolov, Pascal J. Thomas, Maria Trybula

We prove the non-hyperbolicity of the Kobayashi distance for -smooth convex domains in which contain an analytic disc in the boundary or have a…

math.CV2012★ 1 cited

Estimates of invariant distances on "convex" domains

Nikolai Nikolov

Estimates for invariant distances of convexifiable, $\C$-convexifiable and planar domains are given.