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We find the precise growth of some invariant metrics near a point on the boundary of a domain where the Levi form has at least one negative eigenvalue. We also introduce a new invariant pseudometric which is convenient in this context, and…

Complex Variables · Mathematics 2014-05-23 Nguyen Quang Dieu , Nikolai Nikolov , Pascal J. Thomas

Geometric lower and upper estimates are obtained for invariant metrics on $\Bbb C$-convex domains containing no complex lines.

Complex Variables · Mathematics 2012-09-03 Nikolai Nikolov , Peter Pflug , Wlodzimierz Zwonek

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

Complex Variables · Mathematics 2014-11-06 Nikolai Nikolov

Estimates of the Bergman kernel and the Bergman and Kobayashi metrics on pseudoconvex domains near boundaries with constant Levi ranks are given.

Complex Variables · Mathematics 2012-03-09 Siqi Fu

We give improvements of estimates of invariant metrics in the normal direction on strictly pseudoconvex domains. Specifically we will give the second term in the expansion of the metrics. This depends on an improved localisation result and…

Complex Variables · Mathematics 2017-07-20 Erlend Fornæss Wold

Invariant functions and metrics are studied on various classes of domains in $\Bbb C^n.$

Complex Variables · Mathematics 2012-09-03 Nikolai Nikolov

We investigate the question of existence of plurisubharmonic defining functions for smoothly bounded, pseudoconvex domains in $\mathbb{C}^2$. In particular, we construct a family of simple counterexamples to the existence of…

Complex Variables · Mathematics 2022-09-27 Anne-Katrin Gallagher , Tobias Harz

Within a category $\mathtt{C}$, having objects $\mathtt{C}_0$, it may be instructive to know not only that two objects are non-isomorphic, but also how far from being isomorphic they are. We introduce pseudo-metrics $d:\mathtt{C}_0 \times…

Group Theory · Mathematics 2023-04-04 P. A. Brooksbank , J. F. Maglione , E. A. O'Brien , J. B. Wilson

In this paper, we provide some characterizations of strong pseudoconvexity by the boundary behavior of intrinsic invariants for smoothly bounded pseudoconvex domains of finite type in $\mathbb{C}^2$. As a consequence, if such domain is…

Complex Variables · Mathematics 2024-01-03 Jinsong Liu , Xingsi Pu , Lang Wang

Comparison and localization results for the Lempert function, the Carath\'eodory distance and their infinitesimal forms on strongly pseudoconvex domains are obtained. Related results for visible and strongly complete domains are proved.

Complex Variables · Mathematics 2023-11-28 Nikolai Nikolov

In this short note it is shown that all invariant metrics and functions of bounded $\mathcal C^2$-smooth domain coincide on an open non-empty subset.

Complex Variables · Mathematics 2012-12-13 Lukasz Kosinski

The modulus metric between two points in a subdomain of $\mathbb{R}^n, n\ge 2,$ is defined in terms of moduli of curve families joining the boundary of the domain with a continuum connecting the two points. This metric is one of the…

Complex Variables · Mathematics 2024-01-26 Rahim Kargar , Oona Rainio

We give estimates for the squeezing function on strictly pseudoconvex domains, and derive some sharp estimates for the Caratheodory, Sibony and Azukawa metric near their boundaries.

Complex Variables · Mathematics 2014-11-17 John Erik Fornaess , Erlend Fornaess Wold

We present a method for constructing global holomorphic peak functions from local holomorphic support functions for broad classes of unbounded domains. As an application, we establish a method for showing the positivity and completeness of…

Complex Variables · Mathematics 2014-11-12 Taeyong Ahn , Hervé Gaussier , Kang-Tae Kim

Pseudoconvexity of a domain in $\Bbb C^n$ is described in terms of the existence of a locally defined plurisubharmonic/holomorphic function near any boundary point that is unbounded at the point.

Complex Variables · Mathematics 2010-06-23 Nikolai Nikolov , Peter Pflug , Pascal J. Thomas , Wlodzimierz Zwonek

We show the existence of Lebesgue-equivalent conservative and ergodic $\sigma$-finite invariant measures for a wide class of one-dimensional random maps consisting of piecewise convex maps. We also estimate the size of invariant measures…

Dynamical Systems · Mathematics 2023-03-21 Tomoki Inoue , Hisayoshi Toyokawa

This paper is a sequel to \cite{Choi} in Math. Ann. In that paper we studied the subharmonicity of K\"ahler-Einstein metrics on strongly pseudoconvex domains of dimension greater than or equal to $3$. In this paper, we study the variations…

Complex Variables · Mathematics 2016-04-19 Young-Jun Choi

We study the computation of local approximations of invariant manifolds of parabolic fixed points and parabolic periodic orbits of periodic vector fields. If the dimension of these manifolds is two or greater, in general, it is not possible…

Dynamical Systems · Mathematics 2016-03-09 Inmaculada Baldomá , Ernest Fontich , Pau Martín

We characterize certain noncommutative domains in terms of noncommutative holomorphic equivalence via a pseudometric that we define in purely algebraic terms. We prove some properties of this pseudometric and provide an application to free…

Operator Algebras · Mathematics 2019-10-15 Serban Belinschi , Victor Vinnikov

We derive optimal estimates for the Bergman kernel and the Bergman metric for certain model domains in $\mathbb{C}^2$ near boundary points that are of infinite type. Being unbounded models, these domains obey certain geometric constraints…

Complex Variables · Mathematics 2021-03-25 Gautam Bharali
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