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This paper investigates geometric properties and well-posedness of a mean curvature flow with volume-dependent forcing. With the class of forcing which bounds the volume of the evolving set away from zero and infinity, we show that a strong…

偏微分方程分析 · 数学 2020-07-16 Inwon Kim , Dohyun Kwon

We consider a boundary value problem for the system of equations describing the stationary motion of a viscous nonhomogeneous asymmetric fluid in a bounded planar domain having a $C^2$ boundary. We use a stream-function formulation after…

偏微分方程分析 · 数学 2011-08-02 Fábio Vitoriano Silva

We study a variant of the mean curvature flow for closed, convex hypersurfaces where the normal velocity is a nonhomogeneous function of the principal curvatures. We show that if the initial hypersurface satisfies a certain pinching…

偏微分方程分析 · 数学 2020-01-09 Tim Espin

This thesis presents an overview of the flow equations recently introduced by Wegner. The little known mathematical framework of the flow in the manifold of unitarily equivalent matrices, as discovered in the mathematical literature before…

核理论 · 物理学 2009-09-29 Bruce Henry Bartlett

For a given smooth convex cone in the Euclidean $(n+1)$-space $\mathbb{R}^{n+1}$ which is centered at the origin, we investigate the evolution of strictly mean convex hypersurfaces, which are star-shaped with respect to the center of the…

微分几何 · 数学 2024-08-16 Ya Gao , Jing Mao

The main objective of this article is to study the mean curvature flow into an ambient compact smooth manifold M with boundary and with a Riemannian metric that evolves by a self-similar solution of the Ricci flow coupled with the harmonic…

微分几何 · 数学 2025-10-28 José N. V. Gomes , Matheus Hudson , Carlos M. de Sousa

In this paper, we investigate nonlinear stability of planar steady Euler flows related to least energy solutions of the Lane-Emden equation in a smooth bounded domain. We prove the orbital stability of these flows in terms of both the $L^s$…

偏微分方程分析 · 数学 2023-04-26 Guodong Wang

We investigate the shallow flow of viscous fluid into and out of a channel whose gap width increases as a power-law ($x^n$), where $x$ is the downstream axis. The fluid flows slowly, while injected at a rate in the form of $t^\alpha$, where…

流体动力学 · 物理学 2023-12-13 M-S. Liu , H. E. Huppert

We construct weak solutions of the anisotropic inverse mean curvature flow (A-IMCF) under very mild assumptions both on the anisotropy (which is simply a norm in $\mathbb R^N$ with no ellip\-ticity nor smoothness requirements, in order to…

偏微分方程分析 · 数学 2024-04-03 Esther Cabezas-Rivas , Salvador Moll , Marcos Solera

In this paper, we introduce a class of new logarithmic curvature flow. The flows are designed to embrace the monotonicity of the related functional, and the convergence of this flow would tackle the solvability of the weighted…

偏微分方程分析 · 数学 2023-06-16 Jinrong Hu , Qiongfang Mao

In this paper, we establish two stability theorems for steady or traveling solutions of the two-dimensional incompressible Euler equation in a finite periodic channel, extending Arnold's classical work from the 1960s. Compared to Arnold's…

偏微分方程分析 · 数学 2025-04-08 Guodong Wang

Neither natural nor laboratory laminar flows are perfectly steady. Instead, they are frequently highly unsteady, as illustrated by experimental studies on B\'{e}nard convection. In the paper, we investigate the transition threshold of the…

偏微分方程分析 · 数学 2026-03-18 Qionglei Chen , Zhen Li

In this paper, we prove an extended version of the Minkowski Inequality, holding for any smooth bounded set $\Omega \subset \mathbb R^n$, $n\geq 3$. Our proof relies on the discovery of effective monotonicity formulas holding along the…

偏微分方程分析 · 数学 2021-01-05 Virginia Agostiniani , Mattia Fogagnolo , Lorenzo Mazzieri

The purpose of this work is to establish a quantitative and constructive stability result for a class of subcritical Gagliardo-Nirenberg-Sobolev inequalities which interpolates between the logarithmic Sobolev inequality and the standard…

偏微分方程分析 · 数学 2025-02-07 Matteo Bonforte , Jean Dolbeault , Bruno Nazaret , Nikita Simonov

The planar laminar flow resulting from the impingement of two gaseous jets of different density issuing into an open space from aligned steadily fed slot nozzles of semi-width $R$ separated a distance $2H$ is investigated by numerical and…

流体动力学 · 物理学 2022-02-15 A. D. Weiss , W. Coenen. A. L. Sánchez

In this article we establish linear inviscid damping with optimal decay rates around 2D Taylor-Couette flow and similar monotone flows in an annular domain $B_{r_{2}}(0) \setminus B_{r_{1}}(0) \subset \mathbb{R}^{2}$. Following recent…

偏微分方程分析 · 数学 2016-05-20 Christian Zillinger

We study the motion of sets by anisotropic curvature under a volume constraint in the plane. We establish the exponential convergence of the area-preserving anisotropic flat flow to a disjoint union of Wulff shapes of equal area, the…

偏微分方程分析 · 数学 2024-05-15 Eric Kim , Dohyun Kwon

Let X be a smooth subvariety of CP^N. We study a flow, called balancing flow, on the space of projectively equivalent embeddings of X, which attempts to deform the given embedding into a balanced one. If L->X is an ample line bundle,…

微分几何 · 数学 2017-03-24 Joel Fine

We show that the gradient flows associated with a recently found family of Morse functions converge exponentially to the roots of the symmetric continuous Hahn polynomials. By symmetry reduction the rate of the exponential convergence can…

经典分析与常微分方程 · 数学 2021-02-15 J. F. van Diejen

We present a new linearly stable solution of the Euler fluid flow on a torus. On a two-dimensional rectangular periodic domain $[0,2\pi)\times[0,2\pi / \kappa)$ for $\kappa\in\mathbb{R}^+$, the Euler equations admit a family of stationary…

动力系统 · 数学 2018-02-01 Holger Dullin , Joachim Worthington