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In this paper we consider a Ricci de Turck flow of spaces with isolated conical singularities, which preserves the conical structure along the flow. We establish that a given initial regularity of Ricci curvature is preserved along the…

Differential Geometry · Mathematics 2023-07-26 Klaus Kroencke , Tobias Marxen , Boris Vertman

In this paper, we derive some local a priori estimates for Ricci flow. This gives rise to some strong uniqueness theorems. As a corollary, let $g(t)$ be a smooth complete solution to the Ricci flow on $\mathbb{R}^{3}$, with the canonical…

Differential Geometry · Mathematics 2010-10-06 Bing-Long Chen

In this paper we study the long time existence of the Ricci-harmonic flow in terms of scalar curvature and Weyl tensor which extends Cao's result \cite{Cao2011} in the Ricci flow. In dimension four, we also study the integral bound of the…

Differential Geometry · Mathematics 2015-11-30 Yi Li

We introduce a new curvature flow which matches with the Ricci flow on metrics and preserves the almost Hermitian condition. This enables us to use Ricci flow to study almost Hermitian manifolds.

Differential Geometry · Mathematics 2020-03-27 Casey Lynn Kelleher , Gang Tian

We prove that for any complete three-manifold with a lower Ricci curvature bound and a lower bound on the volume of balls of radius one, a solution to the Ricci flow exists for short time. Actually our proof also yields a (non-canonical)…

Differential Geometry · Mathematics 2016-03-30 Raphael Hochard

We introduce certain spherically symmetric singular Ricci solitons and study their stability under the Ricci flow from a dynamical PDE point of view. The solitons in question exist for all dimensions $n+1\ge 3$, and all have a point…

Analysis of PDEs · Mathematics 2013-04-25 Spyros Alexakis , Dezhong Chen , Grigorios Fournodavlos

In this paper we give an explicit bound of $\Delta_{g(t)}u(t)$ and the local curvature estimates for the Ricci-harmonic flow under the condition that the Ricci curvature is bounded along the flow. In the second part these local curvature…

Differential Geometry · Mathematics 2018-10-24 Yi Li

In this paper, we extend the theory of Ricci flows satisfying a Type-I scalar curvature condition at a finite-time singularity. In [Bam16], Bamler showed that a Type-I rescaling procedure will produce a singular shrinking gradient Ricci…

Differential Geometry · Mathematics 2022-03-01 Max Hallgren

In this paper we prove convergence and compactness results for Ricci flows with bounded scalar curvature and entropy. More specifically, we show that Ricci flows with bounded scalar curvature converge smoothly away from a singular set of…

Differential Geometry · Mathematics 2018-02-08 Richard H. Bamler

[Dedicated to Richard S. Hamilton on forty years of Ricci flow] Gradient Ricci solitons have garnered significant attention both as self-similar solutions and singularity models of the Ricci flow. This survey article starts with a list of…

Differential Geometry · Mathematics 2024-09-23 Xiaodong Cao , Hung Tran

In the following series of papers we analyze the long-time behavior of 3 dimensional Ricci flows with surgery. Our main result will be that if the surgeries are performed correctly, then only finitely many surgeries occur and after some…

Differential Geometry · Mathematics 2018-03-16 Richard H. Bamler

We show that $S^2\times S^2$ is isolated as a shrinking Ricci soliton in the space of metrics, up to scaling and diffeomorphism. We also prove the same rigidity for $S^2\times N$, where $N$ belongs to a certain class of closed Einstein…

Differential Geometry · Mathematics 2023-03-29 Ao Sun , Jonathan J. Zhu

We show that the singularities of the twisted K\"ahler--Einstein metric arising as the long-time solution of the K\"ahler--Ricci flow or in the collapsed limit of Ricci-flat K\"ahler metrics is intimately related to the holomorphic…

Differential Geometry · Mathematics 2022-09-14 Kyle Broder

We use a first-order energy quantity to prove a strengthened statement of uniqueness for the Ricci flow. One consequence of this statement is that if a complete solution on a noncompact manifold has uniformly bounded Ricci curvature, then…

Differential Geometry · Mathematics 2015-07-30 Brett Kotschwar

We prove that, for a two-dimensional Riemannian manifold, the Ricci flow is obtained by a Wiener process.

Mathematical Physics · Physics 2009-01-30 Marco Frasca

We give some heuristic results for FRW situations with Ricci flow.

Mathematical Physics · Physics 2011-11-10 Robert Carroll

Given an asymptotically conical, shrinking, gradient Ricci soliton, we show that there exists a Ricci flow solution on a closed manifold that forms a finite-time singularity modeled on the given soliton. No symmetry or Kahler assumptions on…

Differential Geometry · Mathematics 2024-07-30 Maxwell Stolarski

We extend the concept of singular Ricci flow by Kleiner and Lott from 3d compact manifolds to 3d complete manifolds with possibly unbounded curvature. As an application of the generalized singular Ricci flow, we show that for any 3d…

Differential Geometry · Mathematics 2022-02-02 Yi Lai

We survey some of the state of the art regarding singularities in Lagrangian mean curvature flow. Some open problems are suggested at the end.

Differential Geometry · Mathematics 2010-12-10 André Neves

In this paper we prove that for a given K\"ahler-Ricci flow with uniformly bounded Ricci curvatures in an arbitrary dimension, for every sequence of times $t_i$ converging to infinity, there exists a subsequence such that $(M,g(t_i + t))\to…

Differential Geometry · Mathematics 2007-05-23 Natasa Sesum
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