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We present a new application of the squeezing function $s_D$, using which one may detect when a given bounded pseudoconvex domain $D\varsubsetneq \mathbb{C}^n$, $n\geq 2$, is not biholomorphic to any product domain. One of the ingredients…

Complex Variables · Mathematics 2023-11-07 Gautam Bharali , Diganta Borah , Sushil Gorai

This paper investigates positive harmonic functions on a domain which contains an infinite cylinder, and whose boundary is contained in the union of parallel hyperplanes. (In the plane its boundary consists of two sets of vertical…

Classical Analysis and ODEs · Mathematics 2010-10-04 Joanna Pres

We prove that a relatively compact pseudoconvex domain with smooth boundary in an almost complex manifold admits a bounded strictly plurisubharmonic exhaustion function. We use this result for the study of convexity and hyperbolicity…

Complex Variables · Mathematics 2007-05-23 Klas Diederich , Alexandre Sukhov

We investigate existence and uniqueness of maximal plurisubharmonic functions on bounded domains with boundary data that are not assumed to be continuous or bounded. The result is applied to approximate (possibly unbounded from above)…

Complex Variables · Mathematics 2025-09-16 N. Q. Dieu , T. V. Long , T. D. Hieu

For a domain $D \subset \mathbb C^n$, the relationship between the squeezing function and the Fridman invariants is clarified. Furthermore, localization properties of these functions are obtained. As applications, some known results…

Complex Variables · Mathematics 2021-01-29 Nikolai Nikolov , Kaushal Verma

We show that the symmetrized bidisc is a $\Bbb C$-convex domain. This provides an example of a bounded $\Bbb C$-convex domain which cannot be exhausted by domains biholomorphic to convex domains.

Complex Variables · Mathematics 2010-06-23 Nikolai Nikolov , Peter Pflug , Wlodzimierz Zwonek

Given a bounded symmetric domain $D$, we study (positive) pluriharmonic functions on $D$ and investigate a possible analogue of the family of Clark measures associated with a holomorphic function from $D$ into the unit disc in $\mathbb C$.

Complex Variables · Mathematics 2024-07-15 Mattia Calzi

We recall the definition of quasinearly subharmonic functions, point out that this function class includes, among others, subharmonic functions, quasisubharmonic functions, nearly subharmonic functions and essentially almost subharmonic…

Classical Analysis and ODEs · Mathematics 2016-08-04 O. Dovgoshey , J. Riihentaus

This is an essay on potential theory for geometric plurisubharmonic functions. It begins with a given closed subset G of the Grassmann bundle $G(p,TX)$ of tangent $p$-planes to a riemannian manifold $X$. This determines a nonlinear partial…

Differential Geometry · Mathematics 2017-12-12 F. Reese Harvey , H. Blaine Lawson

We characterize the set of positive harmonic functions with Dirichlet boundary conditions in unbounded domains which are union of several different chambers. We analyze the asymptotic behavior of the solutions in connection with the changes…

Analysis of PDEs · Mathematics 2014-04-01 Laura Abatangelo , Susanna Terracini

Let $D=\{\rho<0\}$ be a smooth domain of finite type in an almost complex manifold (M,J) of real dimension four. We assume that the defining function $\rho$ is J-plurisubharmonic on a neighborhood of $\overline{D}$. We study the asymptotic…

Complex Variables · Mathematics 2010-08-19 Florian Bertrand

We prove in an elementary way that for a Lipschitz domain $D\subset \cn$, all plurisubharmonic functions on $D$ can be regularized near any boundary point.

Complex Variables · Mathematics 2014-12-16 Szymon Pliś

We give an example of a sequence of positive harmonic functions on $\mathbb{Z}^d$, $d\geq 2$, that converges pointwise to a non-harmonic function.

Group Theory · Mathematics 2024-12-25 Ferdinand Jacobé de Naurois

Let $\varphi$ be a plurisubharmonic function on a pseudoconvex domain $D \subset \mathbb C^n$. We show that there exists a nonzero holomorphic function $f$ on $D$ such that some local mean value of $\varphi$ with logarithmic additional…

Complex Variables · Mathematics 2016-05-13 B. N. Khabibullin , T. Yu. Baiguskarov

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

Complex Variables · Mathematics 2010-06-23 Nikolai Nikolov , Peter Pflug

The purpose of this article is twofold. The first aim is to characterize $h$-extendibility of smoothly bounded pseudoconvex domains in $\mathbb C^{n+1}$ by their noncompact automorphism groups. Our second goal is to show that if the…

Complex Variables · Mathematics 2019-12-25 Ninh Van Thu , Nguyen Quang Dieu

We provide explicit expression of squeezing function for infinitely connected planar domain obtained by removing a convergent sequence of points from the unit disk converging to the boundary of unit disk. We also discuss Fridman invariant…

Complex Variables · Mathematics 2022-10-20 Akhil Kumar

Pluri-Lagrangian systems are variational systems with the multi-dimensional consistency property. This notion has its roots in the theory of pluriharmonic functions, in the Z-invariant models of statistical mechanics, in the theory of…

Mathematical Physics · Physics 2015-06-03 A. I. Bobenko , Yu. B. Suris

We prove some basic properties of quasinearly subharmonic functions and quasinearly subharmonic functions in the narrow sense.

Complex Variables · Mathematics 2016-08-17 Mansour Kalantar

Let $D$ be a pseudoconvex domain in $\C^k_t\times\Cn_z$ and let $\phi$ be a plurisubharmonic function in $D$. For each $t$ we consider the $n$-dimensional slice of $D$, $D_t=\{z; (t,z)\in D\}$, let $\phi^t$ be the restriction of $\phi$ to…

Complex Variables · Mathematics 2007-05-23 Bo Berndtsson