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We consider the mean-field limit of systems of particles with singular interactions of the type $-\log|x|$ or $|x|^{-s}$, with $0< s<d-2$, and with an additive noise in dimensions $d \geq 3$. We use a modulated-energy approach to prove a…

偏微分方程分析 · 数学 2021-08-24 Matthew Rosenzweig , Sylvia Serfaty

We characterize the long time behaviour of a discrete-in-time approximation of the volume preserving fractional mean curvature flow. In particular, we prove that the discrete flow starting from any bounded set of finite fractional perimeter…

偏微分方程分析 · 数学 2023-01-10 De Gennaro Daniele , Andrea Kubin , Anna Kubin

In recent work of Chan-Huang-Lee, it is shown that if a manifold enjoys uniform bounds on (a) the negative part of the scalar curvature, (b) the local entropy, and (c) volume ratios up to a fixed scale, then there exists a Ricci flow for…

微分几何 · 数学 2025-04-23 Adam Martens

We show that a complete Ricci flow of bounded curvature which begins from a manifold with a Ricci lower bound, local entropy bound, and small local scale-invariant integral curvature control will have global point-wise curvature control at…

微分几何 · 数学 2022-02-08 Pak-Yeung Chan , Eric Chen , Man-Chun Lee

This work introduces the framed curvature flow, a generalization of both the curve shortening flow and the vortex filament equation. Here, the magnitude of the velocity vector is still determined by the curvature, but its direction is given…

微分几何 · 数学 2024-09-02 Jiří Minarčík , Michal Beneš

In this paper we address the question of the pointwise almost everywhere limit of nonlinear Schr\"odinger flows to the initial data, in both the continuous and the periodic settings. Then we show how, in some cases, certain smoothing…

偏微分方程分析 · 数学 2020-02-26 E. Compaan , R. Lucà , G. Staffilani

In this paper we introduce the hyperbolic mean curvature flow and prove that the corresponding system of partial differential equations are strictly hyperbolic, and based on this, we show that this flow admits a unique short-time smooth…

微分几何 · 数学 2010-04-19 Chun-Lei He , De-Xing Kong , Kefeng Liu

Several non-local curvature flows for plane curves with a general rotation number are discussed in this work. The types of flows include the area-preserving flow and the length-preserving flow. We have a relatively good understanding of…

偏微分方程分析 · 数学 2020-03-16 Takeyuki Nagasawa , Kohei Nakamura

We survey some recent work using Ricci flow to create a class of local definitions of weak lower scalar curvature bounds that is well defined for $C^0$ metrics. We discuss several properties of these definitions and explain some…

微分几何 · 数学 2020-12-18 Paula Burkhardt-Guim

We analyse second order (in Riemann curvature) geometric flows (un-normalised) on locally homogeneous three manifolds and look for specific features through the solutions (analytic whereever possible, otherwise numerical) of the evolution…

微分几何 · 数学 2015-04-13 Sanjit Das , Kartik Prabhu , Sayan Kar

Inspired by work of Colding-Minicozzi on mean curvature flow, Zhang introduced a notion of entropy stability for harmonic map flow. We build further upon this work in several directions. First we prove the equivalence of entropy stability…

微分几何 · 数学 2019-01-17 Jess Boling , Casey Lynn Kelleher , Jeffrey Streets

We show short time existence and uniqueness of $\C^{1,1}$ solutions to the mean curvature flow with obstacles, when the obstacles are of class $\C^{1,1}$. If the initial interface is a periodic graph we show long time existence of the…

偏微分方程分析 · 数学 2014-09-26 Gwenael Mercier , Matteo Novaga

We provide sufficient conditions on an initial curve for the area preserving and the length preserving curvature flows of curves in a plane, to develop a singularity at some finite time or converge to an $m$-fold circle as time goes to…

偏微分方程分析 · 数学 2017-08-17 Natasa Sesum , Dong-Ho Tsai , Xiao-Liu Wang

We construct smooth mean curvature flows with surgery that approximate weak mean curvature flows with only spherical and neck-pinch singularities. This is achieved by combining the recent work of Choi-Haslhofer-Hershkovits, and…

微分几何 · 数学 2022-10-18 Joshua Daniels-Holgate

In this paper, we consider the asymptotic behavior of the fractional mean curvature when $s\to 0^+$. Moreover, we deal with the behavior of $s$-minimal surfaces when the fractional parameter $s\in(0,1)$ is small, in a bounded and connected…

偏微分方程分析 · 数学 2018-10-15 Claudia Bucur , Luca Lombardini , Enrico Valdinoci

We prove that the volume preserving fractional mean curvature flow starting from a convex set does not develop singularities along the flow. By the recent result of Cesaroni-Novaga \cite{CN} this then implies that the flow converges to a…

偏微分方程分析 · 数学 2025-02-27 Vesa Julin , Domenico Angelo La Manna

A universal theory of linear instabilities in swirling flows, occurring in both natural settings and industrial applications, is formulated. The theory encompasses a wide range of open and confined flows, including spiral isothermal flows…

流体动力学 · 物理学 2025-02-06 Oleg N. Kirillov , Innocent Mutabazi

Motivated by Pan-Yang [PY] and Ma-Cheng [MC], we study a general linear nonlocal curvature flow for convex closed plane curves and discuss the short time existence and asymptotic convergence behavior of the flow. Due to the linear structure…

微分几何 · 数学 2010-12-02 Yu-Chu Lin , Dong-Ho Tsai

We consider fully discrete numerical approximations for axisymmetric Willmore flow that are unconditionally stable and work reliably without remeshing. We restrict our attention to surfaces without boundary, but allow for spontaneous…

数值分析 · 数学 2026-04-08 Harald Garcke , Robert Nürnberg , Quan Zhao

We consider the inverse mean curvature flow in smooth Riemannian manifolds of the form $([R_{0},\infty)\times S^n,\bar{g})$ with metric $\bar{g}=dr^2+{\vartheta}^2(r){\sigma}$ and non-positive radial sectional curvature. We prove, that for…

微分几何 · 数学 2017-01-18 Julian Scheuer