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In this paper, we characterize weakly pseudoconvex domains of finite type in $\mathbb C^n$ in terms of the boundary behavior of automorphism orbits by using the scaling method.

Complex Variables · Mathematics 2022-09-01 Ninh Van Thu , Nguyen Thi Kim Son , Nguyen Quang Dieu

We will use different way (in this work) from the existing methods in the literature which speaking in the separation of convex sets was carried out by hyperplanes. We are examining the behavior of convex set which is the domain of convex…

Functional Analysis · Mathematics 2020-01-22 Malik Saad Al-Muhja , Amer Himza Almyaly

In our previous paper [GSV2020], we proved that the complementary components of a ring domain in $\mathbb{R}^n$ with large enough modulus may be separated by an annular ring domain and applied this result to boundary correspondence problems…

Complex Variables · Mathematics 2025-01-30 Anatoly Golberg , Toshiyuki Sugawa , Matti Vuorinen

We study the related notions of curvature and perimeter for toric boundaries and their implications for symplectic packing problems; a natural setting for this is a generalized version of convex toric domain which we also study, where there…

Symplectic Geometry · Mathematics 2025-07-01 Dan Cristofaro-Gardiner , Nicki Magill , Dusa McDuff

In this paper, we consider the existence of constant mean curvature hypersurfaces with prescribed gradient image. Let $\Omega$ and $\tilde{\Omega}$ be uniformly convex bounded domains in $\mathbb{R}^n$ with smooth boundary. We show that…

Differential Geometry · Mathematics 2024-11-05 Rongli Huang , Dayan Wei , Yunhua Ye

The purpose of this article is twofold. The first aim is to characterize an $n$-dimensional hyperbolic complex manifold $M$ exhausted by a sequence $\{\Omega_j\}$ of domains in $\mathbb C^n$ via an exhausting sequence $\{f_j\colon…

Complex Variables · Mathematics 2023-09-13 Ninh Van Thu , Trinh Huy Vu , Nguyen Quang Dieu

We study bounded pseudoconvex domains in complex Euclidean spaces. We find analytical necessary conditions and geometric sufficient conditions for a domain being of trivial Diederich--Forn\ae ss index (i.e. the index equals to 1). We also…

Complex Variables · Mathematics 2017-09-21 Bingyuan Liu

We give partial boundary regularity for co-dimension one absolutely area-minimizing currents at points where the boundary consists of a sum of $C^{1,\alpha}$ submanifolds, possibly with multiplicity, meeting tangentially, given that the…

Differential Geometry · Mathematics 2017-04-19 Leobardo Rosales

In this short note we consider very general bounded minimal homogeneous domains. Under certain natural additional conditions new sharp results on Bergman type analytic spaces in minimal bounded homogeneous domains are obtained. Domains we…

Complex Variables · Mathematics 2025-08-28 R. F. Shamoyan , N. M. Makhina

In this paper it is shown that higher order quasiconvex functions suitable in the variational treatment of problems involving second derivatives may be extended to the space of all matrices as classical quasiconvex functions. Precisely, it…

Analysis of PDEs · Mathematics 2009-11-10 Gianni Dal Maso , Irene Fonseca , Giovanni Leoni , Massimiliano Morini

Given a pseudoconvex hypersurface in C^n and an arbitrary weight, we show the existence of local coordinates in which the polynomial model contains a particularly simple sum of squares of monomials. Our second main result provides a…

Complex Variables · Mathematics 2018-06-06 Alexander Basyrov , Andreea C. Nicoara , Dmitri Zaitsev

We obtain weighted estimates for the $\bar{\partial}$-Neumann operator on intersections of two smooth strictly pseudoconvex domains in $\mathbb{C}^2$. The regularity estimates are described with the use of Sobolev norms with weights which…

Complex Variables · Mathematics 2019-04-24 Dariush Ehsani

We prove that the gradient of any bounded subharmonic function is upper semi-continuous, provided that its super-level sets can be touched from the exterior by uniform $C^{1,\text{Dini}}$ domains at every point. This idea extends to a class…

Analysis of PDEs · Mathematics 2026-02-18 Aram Hakobyan , Michael Poghosyan , Henrik Shahgholian

Motivated by applications in materials science, a set of quasiconvexity at the boundary conditions is introduced for domains that are locally diffeomorphic to cones. These conditions are shown to be necessary for strong local minimisers in…

Analysis of PDEs · Mathematics 2019-04-08 Judith Campos Cordero , Konstantinos Koumatos

Exceptional domains are domains on which there exists a positive harmonic function, zero on the boundary and such that the normal derivative on the boundary is constant. Recent results classify exceptional domains as belonging to either a…

Complex Variables · Mathematics 2016-01-20 Alexandre Eremenko , Erik Lundberg

We consider a partially overdetermined problem for the $p$-Laplace equation in a convex cone $\mathcal{C}$ intersected with the exterior of a smooth bounded domain $\overline{\Omega}$ in $\mathbb{R}^n$($n\geq2$). First, we establish the…

Analysis of PDEs · Mathematics 2023-10-10 Hui Ma , Mingxuan Yang , Jiabin Yin

We give, in dimensions three or greater, an example of a bounded, pseudoconvex, circular domain in complex space with smooth real analytic boundary and non-compact automorphism group which is not biholomorphically equivalent to any…

Complex Variables · Mathematics 2009-09-25 Siqi Fu , A. V. Isaev , Steven G. Krantz

We introduce the notion of domains with uniform squeezing property, study various analytic and geometric properties of such domains and show that they cover many interesting examples, including Teichmuller spaces and Hermitian symmetric…

Complex Variables · Mathematics 2009-06-26 Sai-Kee Yeung

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…

Complex Variables · Mathematics 2023-06-14 Sławomir Dinew , Żywomir Dinew

In this paper, we consider the Hessian equations in some exterior domain with prescribed asymptotic behavior at infinity and Dirichlet-Neumann conditions on its interior boundary. We obtain that there exists a unique bounded domain such…

Analysis of PDEs · Mathematics 2024-12-17 Bo Wang , Zhizhang Wang