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In this text we outline the major techniques, concepts and results in mean curvature flow with a focus on higher codimension. In addition we include a few novel results and some material that cannot be found elsewhere.

微分几何 · 数学 2011-05-03 Knut Smoczyk

We develop a stochastic target representation for Ricci flow and normalized Ricci flow on smooth, compact surfaces, analogous to Soner and Touzi's representation of mean curvature flow. We prove a verification/uniqueness theorem, and then…

概率论 · 数学 2016-03-31 Robert W. Neel , Ionel Popescu

We study the mean curvature flow in 3-dimensional null hypersurfaces. In a spacetime a hypersurface is called null, if its induced metric is degenerate. The speed of the mean curvature flow of spacelike surfaces in a null hypersurface is…

微分几何 · 数学 2022-05-06 Henri Roesch , Julian Scheuer

Generative flow networks (GFlowNets) are a method for learning a stochastic policy for generating compositional objects, such as graphs or strings, from a given unnormalized density by sequences of actions, where many possible action…

机器学习 · 计算机科学 2023-10-05 Nikolay Malkin , Moksh Jain , Emmanuel Bengio , Chen Sun , Yoshua Bengio

We construct a slingshot, that is a compact, embedded solution to curve shortening flow that comes out of a non compact curve and exists for a finite time.

微分几何 · 数学 2023-03-31 Theodora Bourni , Martin Reiris

We derive an expression for the velocity profile of a pressure-driven yield-stress fluid flow-ing around a two-dimensional concentric annulus. This result allows the prediction of the effects of channel curvature on the pressure gradient…

流体动力学 · 物理学 2020-04-30 Tirion G. Roberts , Simon J. Cox

In this paper we investigate the convergence for the mean curvature flow of closed submanifolds with arbitrary codimension in space forms. Particularly, we prove that the mean curvature flow deforms a closed submanifold satisfying a…

微分几何 · 数学 2011-05-31 Kefeng Liu , Hongwei Xu , Fei Ye , Entao Zhao

This study presents a conditional flow matching framework for solving physics-constrained Bayesian inverse problems. In this setting, samples from the joint distribution of inferred variables and measurements are assumed available, while…

Advection and mean curvature flow is used as a model of bone microarchitecture adaptation. It is an equivalent geometric flow to prescribed mean curvature flow with an additional rate term. In order to validate numerical methods for…

微分几何 · 数学 2020-12-22 Bryce A. Besler , Tannis D. Kemp , Nils D. Forkert , Steven K. Boyd

In this article we study Chen's flow of curves from theoreical and numerical perspectives. We investigate two settings: that of closed immersed $\omega$-circles, and immersed lines satisfying a cocompactness condition. In each of the…

微分几何 · 数学 2020-04-21 Matthew Cooper , Glen Wheeler , Valentina-Mira Wheeler

In this paper, we study the mean curvature flow of graphs with Neumann boundary condition. The main aim is to use the maximum principle to get the boundary gradient estimate for solutions. In particular, we obtain the corresponding…

偏微分方程分析 · 数学 2016-06-22 Jinju Xu

MeanFlow has recently emerged as a powerful framework for few-step generative modeling trained from scratch, but its success is not yet fully understood. In this work, we show that the MeanFlow objective naturally decomposes into two parts:…

计算机视觉与模式识别 · 计算机科学 2025-10-24 Huijie Zhang , Aliaksandr Siarohin , Willi Menapace , Michael Vasilkovsky , Sergey Tulyakov , Qing Qu , Ivan Skorokhodov

We introduce ContinualFlow, a principled framework for targeted unlearning in generative models via Flow Matching. Our method leverages an energy-based reweighting loss to softly subtract undesired regions of the data distribution without…

机器学习 · 计算机科学 2025-06-24 Lorenzo Simone , Davide Bacciu , Shuangge Ma

The skew mean curvature flow(SMCF), which origins from the study of fluid dynamics, describes the evolution of a codimension two submanifold along its binormal direction. We study the basic properties of the SMCF and prove the existence of…

微分几何 · 数学 2017-10-04 Chong Song , Jun Sun

In this paper, we study the skew mean curvature flow. The results are threefold. First, we prove the global regularity of solutions with initial data which are small perturbations of planes in Sobolev spaces. Second, we prove the modified…

偏微分方程分析 · 数学 2021-11-30 Ze Li

Motivated by Legendrian curve shortening flows in $\mathbb{R}^{3}$, we study the curve shortening flow of figure-eight curves in the plane. We show that, under some symmetry and curvature conditions, a figure-eight curve will shrink to a…

微分几何 · 数学 2015-08-06 Gregory Drugan , Weiyong He , Micah W. Warren

Finding image correspondences remains a challenging problem in the presence of intra-class variations and large changes in scene layout.~Semantic flow methods are designed to handle images depicting different instances of the same object or…

计算机视觉与模式识别 · 计算机科学 2016-07-11 Bumsub Ham , Minsu Cho , Cordelia Schmid , Jean Ponce

We study hard constraint satisfaction problems with a decimation approach based on message passing algorithms. Decimation induces a renormalization flow in the space of problems, and we exploit the fact that this flow transforms some of the…

无序系统与神经网络 · 物理学 2010-05-11 Saburo Higuchi , Marc Mézard

Target class classification is a mixed classification and transition model whose integrated goal is to assign objects to a certain, so called target or normal class. The classification process is iterative, and in each step an object in a…

机器学习 · 计算机科学 2024-03-25 Levon Aslanyan , Hasmik Sahakyan

We study the area preserving curve shortening flow with Neumann free boundary conditions outside of a convex domain in the Euclidean plane. Under certain conditions on the initial curve the flow does not develop any singularity, and it…

偏微分方程分析 · 数学 2015-03-20 Elena Mäder-Baumdicker