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Motivated by a recent work of Chen-Zheng [8] on Strominger space forms, we prove that a compact Hermitian surface with pointwise constant holomorphic sectional curvature with respect to a Gauduchon connection $\nabla^t $ is either K\"ahler,…

微分几何 · 数学 2022-02-15 Haojie Chen , Xiaolan Nie

We rigorously derive a Blake-Zisserman-Kirchhoff theory for thin plates with material voids, starting from a three-dimensional model with elastic bulk and interfacial energy featuring a Willmore-type curvature penalization. The effective…

偏微分方程分析 · 数学 2025-04-09 Manuel Friedrich , Leonard Kreutz , Konstantinos Zemas

We study the classification of smooth toroidal compactifications of nonuniform ball quotients in the sense of Kodaira and Enriques. Moreover, several results concerning the Riemannian and complex algebraic geometry of these spaces are…

微分几何 · 数学 2012-01-17 Luca Fabrizio Di Cerbo

In this paper we provide new necessary and sufficient conditions for the existence of K\"ahler-Einstein metrics on small deformations of a Fano K\"ahler-Einstein manifold. We also show that the Weil-Petersson metric can be approximated by…

微分几何 · 数学 2024-03-12 Huai-Dong Cao , Xiaofeng Sun , Shing-Tung Yau , Yingying Zhang

A one-dimensional model of a dispersive medium with intrinsic loss, compensated by a parametric drive, is proposed. It is a combination of the well-known parametrically driven nonlinear Schr\"{o}dinger (NLS) and complex cubic…

斑图形成与孤子 · 物理学 2009-11-10 Hidetsugu Sakaguchi , Boris Malomed

The object of study of this article is compact surfaces in the three-dimensional hyperbolic space with a positive-definite second fundamental form. It is shown that several conditions on the Gaussian curvature of the second fundamental form…

微分几何 · 数学 2009-09-18 Steven Verpoort

Let $M^n$ be either a simply connected space form or a rank-one symmetric space of noncompact type. We consider Weingarten hypersurfaces of $M\times\mathbb R$, which are those whose principal curvatures $k_1,\dots ,k_n$ and angle function…

微分几何 · 数学 2022-12-09 Ronaldo F. de Lima , Álvaro K. Ramos , João P. dos Santos

The paper focuses on the conformal Lorentz geometry of quasi-umbilical timelike surfaces in the $(1+2)$-Einstein universe, the conformal compactification of Minkowski 3-space realized as the space of oriented null lines through the origin…

微分几何 · 数学 2025-09-29 Emilio Musso , Lorenzo Nicolodi , Mason Pember

In the case of smooth non-invertible maps which are hyperbolic on folded basic sets $\Lambda$, we give approximations for the Gibbs states (equilibrium measures) of arbitrary H\"{o}lder potentials, with the help of weighted sums of atomic…

动力系统 · 数学 2010-06-21 Eugen Mihailescu

In this article, we give a growth rate about the number of periodic orbits in the Franks type theorem obtained by the authors \cite{LWY}. As applications, we prove the following two results: there exist infinitely many distinct…

动力系统 · 数学 2022-11-22 Hui Liu , Jian Wang , Jingzhi Yan

This paper presents a pioneering investigation into the existence of traveling wave solutions for the two-dimensional Euler equations with constant vorticity in a curved annular domain, where gravity acts radially inward. This configuration…

偏微分方程分析 · 数学 2025-09-22 Liang Li , Quan Wang

Given a subset K of the unit Euclidean sphere, we estimate the minimal number m = m(K) of hyperplanes that generate a uniform tessellation of K, in the sense that the fraction of the hyperplanes separating any pair x, y in K is nearly…

概率论 · 数学 2013-09-27 Yaniv Plan , Roman Vershynin

We show that nonlinearly elastic plates of thickness $h\to 0$ with an $\varepsilon$-periodic structure such that $\varepsilon^{-2}h\to 0$ exhibit non-standard behaviour in the asymptotic two-dimensional reduction from three-dimensional…

偏微分方程分析 · 数学 2015-11-19 Mikhail Cherdantsev , Kirill Cherednichenko

The paper contains an analysis of the conditions for the existence of elastic versus non-elastic wave superpositions governed by the Euler system in (1+1)-dimensions. A review of recently obtained results is presented, including the…

数学物理 · 物理学 2026-01-16 Łukasz Chomienia , Alfred Michel Grundland

We perform the analysis of a hyperbolic model which is the analog of the Fisher-KPP equation. This model accounts for particles that move at maximal speed $\epsilon^{-1}$ ($\epsilon\textgreater{}0$), and proliferate according to a reaction…

偏微分方程分析 · 数学 2016-11-22 Emeric Bouin , Vincent Calvez , Grégoire Nadin

The deformation theory of hyperbolic and Euclidean cone-manifolds with all cone angles less then 2{\pi} plays an important role in many problems in low dimensional topology and in the geometrization of 3-manifolds. Furthermore, various old…

微分几何 · 数学 2015-03-13 Rafe Mazzeo , Gregoire Montcouquiol

We study long-time dynamics of a class of abstract second order in time evolution equations in a Hilbert space with the damping term depending both on displacement and velocity. This damping represents the nonlinear strong dissipation…

动力系统 · 数学 2010-10-26 Igor Chueshov , Stanislav Kolbasin

We characterize two classical types of conformality of a holomorphic self-map of the unit disk at a boundary point - existence of a finite angular derivative in the sense of Carath\'eodory and the weaker property of angle preservation - in…

复变函数 · 数学 2024-10-21 Pavel Gumenyuk , Maria Kourou , Annika Moucha , Oliver Roth

The Kirchhoff-Love hypothesis expresses a kinematic constraint that is assumed to be valid for the deformations of a three-dimensional body when one of its dimensions is much smaller than the other two, as is the case for plates. This…

数学物理 · 物理学 2020-05-28 Olivier Ozenda , Epifanio G. Virga

Given two hyperbolic surfaces and a homotopy class of maps between them, Thurston proved that there always exists a representative minimizing the Lipschitz constant. While not unique, these minimizers are rigid along a geodesic lamination.…

几何拓扑 · 数学 2025-10-24 Aaron Calderon , Jing Tao