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We consider a gradient flow related to the mean field type equation. First, we show that this flow exists for all time. Next, we prove a compactness result for this flow allowing us to get, under suitable hypothesis on its energy, the…

偏微分方程分析 · 数学 2012-12-11 Jean-Baptiste Castéras

We show that every gradient shrinking soliton of the generalized Ricci flow on compact manifold is a Ricci soliton. And we prove that the pluriclosed soliton is gradient Kahler-Ricci soliton under a broad cohomological condition. Moreover,…

微分几何 · 数学 2024-04-10 Xilun Li , Yanan Ye

In this paper, we consider the $V$-soliton equation which is a degenerate fully nonlinear equation introduced by La Nave and Tian in their work on K\"ahler-Ricci flow on symplectic quotients. One can apply the interpretation to study finite…

偏微分方程分析 · 数学 2020-01-31 Chang Li

We show that the K\"ahler-Ricci flow on a manifold with positive first Chern class converges to a K\"ahler-Einstein metric assuming positive bisectional curvature and certain stability conditions.

微分几何 · 数学 2018-12-20 D. H. Phong , Jian Song , Jacob Sturm , Ben Weinkove

We obtain a compactness result for Fano manifolds and K\"ahler Ricci flows. Comparing to the more general Riemannian versions by Anderson and Hamilton, in this Fano case, the curvature assumption is much weaker and is preserved by the…

微分几何 · 数学 2014-04-16 Gang Tian , Qi S. Zhang

In this paper we prove first order differential Harnack estimates for positive solutions of the heat equation (in the sense of distributions) under closed Finsler-Ricci flows. We assume mild non-linearities (in terms of the Chern…

微分几何 · 数学 2018-07-24 Sajjad Lakzian

In \cite{P1}, Perelman established a differential Li-Yau-Hamilton (LYH) type inequality for fundamental solutions of the conjugate heat equation corresponding to the Ricci flow on compact manifolds (also see \cite{N2}). As an application of…

微分几何 · 数学 2007-05-23 Albert Chau , Luen-Fai Tam , Chengjie Yu

In this note we obtain local derivative estimates of Shi-type for the heat equation coupled to the Ricci flow. As applications, in part combining with Kuang's work, we extend some results of Zhang and Bamler-Zhang including distance…

微分几何 · 数学 2021-03-02 Hong Huang

The geometric flow theory and its applications turned into one of the most intensively developing branches of modern geometry. Here, a brief introduction to Finslerian Ricci flow and their self-similar solutions known as Ricci solitons are…

微分几何 · 数学 2018-07-12 Behroz Bidabad , Mohammad Yar Ahmadi

We consider the volume-normalized Ricci flow close to compact shrinking Ricci solitons. We show that if a compact Ricci soliton $(M,g)$ is a local maximum of Perelman's shrinker entropy, any normalized Ricci flow starting close to it exists…

微分几何 · 数学 2015-06-29 Klaus Kroencke

The second del Pezzo surface is known by work of Tian-Zhu and Wang-Zhu to admit a unique Kaehler-Ricci soliton. Applying a method described in hep-th/0703057, we use Ricci flow to numerically compute that soliton metric. We numerically…

微分几何 · 数学 2007-06-19 Matthew Headrick , Toby Wiseman

In the first part of the paper we derive integral curvature estimates for complete gradient shrinking Ricci solitons. Our results and the recent work of Lopez-Rio imply rigidity of gradient shrinking Ricci solitons with harmonic Weyl…

微分几何 · 数学 2011-09-07 Ovidiu Munteanu , Natasa Sesum

The aim of this paper is to give a proof the Frankel conjecture by using the Kahler Ricci flow alone without assuming apriori the existence of Kahler Einstein metrics. However, there is an essential difference between the real case and the…

微分几何 · 数学 2008-07-28 Yuanqi Wang

We formulate the gradient Dirichlet flow of $Sp(2)Sp(1)$-structures on $8$-manifolds, as the first systematic study of a geometric quaternion-K\"ahler (QK) flow. Its critical condition of \emph{harmonicity} is especially relevant in the QK…

微分几何 · 数学 2024-10-30 Udhav Fowdar , Henrique N. Sá Earp

In this work, we first establish short time existence and Shi's type estimate of second Ricci flow on complete noncompact Hermitian manifolds. As an application, we use the second Ricci flow to discuss the existence of Kaehler-Einstein…

微分几何 · 数学 2019-12-03 Man-Chun Lee

We study the behavior of the normalized Ricci flow of invariant Riemannian homogeneous metrics at infinity for generalized Wallach spaces, generalized flag manifolds with four isotropy summands and second Betti number equal to one, and the…

微分几何 · 数学 2020-08-11 Marina Statha

We use the theory of isoparametric functions to investigate gradient Ricci solitons with constant scalar curvature. We show rigidity of gradient Ricci solitons with constant scalar curvature under some conditions on the Ricci tensor, which…

微分几何 · 数学 2014-09-12 Manuel Fernandez-Lopez , Eduardo Garcia-Rio

In this short survey paper, we first recall the log gradient estimates for the heat equation on manifolds by Li-Yau, R. Hamilton and later by Perelman in conjunction with the Ricci flow. Then we will discuss some of their applications and…

微分几何 · 数学 2024-07-31 Qi S. Zhang

We introduce a notion of stability for non-autonomous Hamiltonian flows on two-dimensional annular surfaces. This notion of stability is designed to capture the sustained twisting of particle trajectories. The main Theorem is applied to…

偏微分方程分析 · 数学 2024-08-30 Theodore D. Drivas , Tarek M. Elgindi , In-Jee Jeong

The stability of a recently developed piecewise flat Ricci flow is investigated, using a linear stability analysis and numerical simulations, and a class of piecewise flat approximations of smooth manifolds is adapted to avoid an inherent…

微分几何 · 数学 2023-06-23 Rory Conboye