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A lattice based method will be presented for numerical investigations of Ricci flow. The method will be applied to the particular case of 2-dimensional axially symmetric initial data on manifolds with S^2 topology. Results will be presented…

Differential Geometry · Mathematics 2015-12-14 Leo Brewin

In this note, we provide some general discussion on the Ricci lower bound along K\"ahler-Ricci flow with singularity over closed manifold.

Differential Geometry · Mathematics 2011-10-28 Zhou Zhang

In this paper we study a boundary value problem for the Ricci flow in the two dimensional ball endowed with a rotationally symmetric metric. We show short and long time existence results. We construct families of metrics for which the flow…

Differential Geometry · Mathematics 2007-05-23 Jean Cortissoz

Motivated by M\"uller-Haslhofer results on the dynamical stability and instability of Ricci-flat metrics under the Ricci flow, we obtain dynamical stability and instability results for pairs of Ricci-flat metrics and vanishing 3-forms under…

Differential Geometry · Mathematics 2025-01-03 Alberto Raffero , Luigi Vezzoni

Ricci flow deforms the Riemannian metric proportionally to the curvature, such that the curvature evolves according to a heat diffusion process and eventually becomes constant everywhere. Ricci flow has demonstrated its great potential by…

Geometric Topology · Mathematics 2014-03-31 Min Zhang , Ren Guo , Wei Zeng , Feng Luo , Shing-Tung Yau , Xianfeng Gu

For homogeneous metrics on the spaces of the title it is shown that the Ricci flow can move a metric of stricly positive sectional curvature to one with some negative sectional curvature and one of positive definite Ricci tensor to one with…

Differential Geometry · Mathematics 2015-09-16 Man-Wai Cheung , Nolan R. Wallach

We study the convergence of the K\"ahler-Ricci flow on a compact K\"ahler manifold $(M,J)$ with positive first Chern class $c_1(M;J)$ and vanished Futaki invariant on $\pi c_1(M;J)$. As the application we establish a criterion for the…

Differential Geometry · Mathematics 2010-12-01 Zhenlei Zhang

In this paper we investigate a kind of generalized Ricci flow which possesses a gradient form. We study the monotonicity of the given function under the generalized Ricci flow and prove that the related system of partial differential…

Differential Geometry · Mathematics 2011-07-19 Chun-lei He , Sen Hu , De-Xing Kong , Kefeng Liu

We give a description of all $G$-invariant Ricci-flat K\"ahler metrics on the canonical complexification of any compact Riemannian symmetric space $G/K$ of arbitrary rank, by using some special local $(1,0)$ vector fields on $T(G/K)$. As…

Differential Geometry · Mathematics 2019-03-04 P. M. Gadea , J. C. González-Dávila , I. V. Mykytyuk

We construct explicit complete Ricci-flat metrics on the total spaces of certain vector bundles over flag manifolds of the group $SU(n)$, for all K\"ahler classes. These metrics are natural generalizations of the metrics of Candelas-de la…

High Energy Physics - Theory · Physics 2020-06-24 Ismail Achmed-Zade , Dmitri Bykov

In this paper, we continue to study the generalized Ricci flow. We give a criterion on steady gradient Ricci soliton on complete and noncompact Riemannian manifolds that is Ricci-flat, and then introduce a natural flow whose stable points…

Differential Geometry · Mathematics 2013-10-01 Yi Li

We produce complete bounded curvature solutions to K\"ahler-Ricci flow with existence time estimates, assuming only that the initial data is a smooth \K metric uniformly equivalent to another complete bounded curvature \K metric. We obtain…

Differential Geometry · Mathematics 2019-04-09 Albert Chau , Man-Chun Lee

We simplify and improve the curvature estimates in the paper: On the conditions to extend Ricci flow(II). Furthermore, we develop some volume estimates for the Ricci flow with bounded scalar curvature. These estimates can be applied to…

Differential Geometry · Mathematics 2011-09-21 Xiuxiong Chen , Bing Wang

We study higher-order curvature estimates along K\"ahler-Ricci flows on compact K\"ahler manifolds of intermediate Kodaira dimension. We prove that away from singular fibers, the Ricci curvature is uniformly bounded in $C^1$, the Laplacian…

Differential Geometry · Mathematics 2026-03-26 Wenrui Kong

We introduce singular Ricci flows, which are Ricci flow spacetimes subject to certain asymptotic conditions. We consider the behavior of Ricci flow with surgery starting from a fixed initial compact Riemannian 3-manifold, as the surgery…

Differential Geometry · Mathematics 2018-04-11 Bruce Kleiner , John Lott

We show that for any solvable Lie group of real type, any homogeneous Ricci flow solution converges in Cheeger-Gromov topology to a unique non-flat solvsoliton, which is independent of the initial left-invariant metric. As an application,…

Differential Geometry · Mathematics 2017-08-23 Christoph Böhm , Ramiro A. Lafuente

In this paper we study the evolution of almost non-negatively curved (possibly singular) three dimensional metric spaces by Ricci flow. The non-negatively curved metric spaces which we consider arise as limits of smooth Riemannian manifolds…

Differential Geometry · Mathematics 2007-05-23 Miles Simon

In this note we attempt to propose a categorical framework for the Ricci flow, treating it as a sequence of functors connecting the stack of Riemannian metrics to the category of geometric decompositions via singular flow spacetimes. To…

Category Theory · Mathematics 2026-01-27 Alexander Plakhotnikov

We discuss the Ricci flow on homogeneous 4-manifolds. After classifying these manifolds, we note that there are families of initial metrics such that we can diagonalize them and the Ricci flow preserves the diagonalization. We analyze the…

Differential Geometry · Mathematics 2007-05-23 James Isenberg , Martin Jackson , Peng Lu

We analyse Ricci flow (normalised/un-normalised) of product manifolds --unwarped as well as warped, through a study of generic examples. First, we investigate such flows for the unwarped scenario with manifolds of the type $\mathbb…

General Relativity and Quantum Cosmology · Physics 2011-05-09 Sanjit Das , Kartik Prabhu , Sayan Kar
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