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A direct proof of Oka's lemma on the relation of holomorphic convexity and the properties of the distance to the boundary function is provided. Some related problems for subharmonicity properties of this function are also studied. A new…

复变函数 · 数学 2023-06-14 Sławomir Dinew , Żywomir Dinew

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.

复变函数 · 数学 2014-11-17 John Erik Fornaess , Erlend Fornaess Wold

The purpose of this article is to investigate the boundary behaviour of the Kobayashi--Fuks metric and several associated invariants on strictly pseudoconvex domains in the paradigm of scaling. This approach allows us to examine more…

复变函数 · 数学 2025-01-23 Anjali Bhatnagar

We generalize the inequality being a counterpart of the several complex variables version of the Suita conjecture. For this aim higher order generalizations of the Bergman kernel are introduced. As a corollary some new partial results on…

复变函数 · 数学 2018-11-08 Wlodzimierz Zwonek , Zbigniew Blocki

Given a convex domain and its convex sub-domain we prove a variant of domain monotonicity for the Neumann eigenvalues of the Laplacian. As an application of our method we also obtain an upper bound for Neumann eigenvalues of the Laplacian…

度量几何 · 数学 2023-09-11 Kei Funano

The celebrated Ohsawa--Takegoshi extension theorem for $L^2$ holomorphic functions on bounded pseudoconvex domains in $\mathbb C^n$ is a fundamental result in several complex variables and complex geometry. Ohsawa conjectured in 1995 that…

复变函数 · 数学 2024-07-17 Xieping Wang

Pseudo-harmonic morphisms give rise on the domain space to a distribution which admits an almost complex structure compatible with the given Riemannian metric. We shall show that this property, together with the harmonicity, are preserved…

微分几何 · 数学 2007-05-23 Radu Slobodeanu

The purpose of this article is to consider two themes both of which emanate from and involve the Kobayashi and the Carath\'eodory metric. First we study the biholomorphic invariant introduced by B. Fridman on strongly pseudoconvex domains,…

复变函数 · 数学 2009-10-29 Prachi Mittal , Kaushal Verma

This work concerns superharmonic perturbations of a Gaussian measure given by a special class of positive weights in the complex plane of the form $w(z) = \exp(-|z|^2 + U^{\mu}(z))$, where $U^{\mu}(z)$ is the logarithmic potential of a…

数学物理 · 物理学 2013-04-02 F. Balogh , J. Harnad

This note should clarify how the behavior of certain invariant objects reflects the geometric convexity of balanced domains.

复变函数 · 数学 2010-06-23 Nikolai Nikolov , Peter Pflug

In this paper, we derive a sub-gradient estimate for pseudoharmonic maps from noncompact complete Sasakian manifolds which satisfy CR sub-Laplace comparison property, to simply-connected Riemannian manifolds with nonpositive sectional…

微分几何 · 数学 2015-06-17 Yibin Ren , Guilin Yang , Tian Chong

In this paper, we introduce a concept of super-pseudoconvex domain. We prove that the solution of the Feffereman equation on a smoothly bounded strictly pseudoconvex domain $D$ in $\CC^n$ is plurisubharmonic if and only if $D$ is…

复变函数 · 数学 2015-02-12 Song-Ying Li

An application of the Zalcman renormalization theorem to harmonic functions shows that the limit functions are nonconstant affine. Extensions of this method are given for maps with values in a torus or in a complex Lie groups. As an…

复变函数 · 数学 2007-05-23 J-J. Loeb

We show some lower estimates for the Kobayashi-Royden metric on a class of smooth bounded pseudoconvex domains.

复变函数 · 数学 2009-10-15 Peter Pflug , Włodzimierz Zwonek

A quantitative version of strong localization of the Kobayashi, Azukawa and Sibony metrics, as well as of the squeezing function, near a plurisubharmonic peak boundary point of a domain in $\Bbb C^n$ is given. As an application, the…

复变函数 · 数学 2023-11-28 John Erik Fornæss , Nikolai Nikolov

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

复变函数 · 数学 2012-03-09 Siqi Fu

For a continuous function, we prove that the function is pluriharmonic if and only if the equality part of the optimal Ohsawa--Takegoshi $L^2$-extension theorem is satisfied with respect to the metric having the function as a weight. This…

复变函数 · 数学 2023-07-06 Takahiro Inayama

We give an explicit lower bound, in terms of the distance from the boundary, for the Kobayashi metric of a certain class of bounded pseudoconvex domains in $\mathbb{C}^n$ with $\mathcal{C}^2$-smooth boundary using the regularity theory for…

复变函数 · 数学 2025-07-02 Annapurna Banik , Gautam Bharali

We reduce Iitaka's subadditivity conjecture for the logarithmic Kodaira dimension to a special case of the generalized abundance conjecture by establishing an Iitaka type inequality for Nakayama's numerical Kodaira dimension. Our proof…

代数几何 · 数学 2016-02-09 Osamu Fujino

After a study of the Kobayashi metrics on certain scaled domains, we show the stabilities of the infinitesimal Kobayashi metrics and the integrated distances in different scaling processes. As an application, we prove that bounded…

复变函数 · 数学 2022-06-10 Ben Zhang
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