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In this survey we provide an overview of our recent results concerning Ricci de Turck flow on spaces with isolated conical singularities. The crucial characteristic of the flow is that it preserves the conical singularity. Under certain…

Differential Geometry · Mathematics 2021-01-25 Klaus Kroencke , Boris Vertman

The famous Uniformization Theorem states that on closed Riemannian surfaces there always exists a metric of constant curvature for the Levi-Cevita connection. In this article we prove that an analogue of the uniformization theorem also…

Differential Geometry · Mathematics 2017-01-10 Volker Branding , Klaus Kroencke

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

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 consider functionals related to mean curvature flow in an ambient space which evolves by an extended Ricci flow from the perspective introduced by Lott when studying a mean curvature flow in a Ricci flow background. One of…

Differential Geometry · Mathematics 2024-04-12 José N. V. Gomes , Matheus Hudson

In this note we prove that any left-invariant almost Hermitian structure on a 2-step nilmanifold is Ricci-flat with respect to the Chern connection and that it is Ricci-flat with respect to another canonical connection if and only if it is…

Differential Geometry · Mathematics 2014-05-26 Luigi Vezzoni

We explore the harmonic-Ricci flow---that is, Ricci flow coupled with harmonic map flow---both as it arises naturally in certain principal bundle constructions related to Ricci flow and as a geometric flow in its own right. We demonstrate…

Differential Geometry · Mathematics 2012-12-18 Michael Bradford Williams

We introduce the discrete Einstein metrics as critical points of discrete energy on triangulated 3-manifolds, and study them by discrete curvature flow of second (fourth) order. We also study the convergence of the discrete curvature flow.…

Differential Geometry · Mathematics 2017-02-10 Huabin Ge , Xu Xu , Shijin Zhang

We show pluriclosed flow preserves the Hermitian-symplectic structures. And we observe that it can actually become a flow of Hermitian-symplectic forms when an extra evolution equation determined by the Bismut-Ricci form is considered.…

Differential Geometry · Mathematics 2022-07-27 Yanan Ye

We study the Ricci flow for the Lorentzian Einstein-Hilbert action. We show that Einstein gravity emerges as a fixed point of the Einstein-Ricci flow equations and derive a renormalization group flow in Euclidean signature. By considering…

General Relativity and Quantum Cosmology · Physics 2021-10-05 Aditya Dhumuntarao

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…

Differential Geometry · Mathematics 2018-07-12 Behroz Bidabad , Mohammad Yar Ahmadi

We give biLipschitz models for the Ricci flow on some 4-manifolds (minimal surfaces of general type), exhibiting a combination of expanding and static behavior.

Differential Geometry · Mathematics 2025-01-23 John Lott

In this paper we introduce the stochastic Ricci flow (SRF) in two spatial dimensions. The flow is symmetric with respect to a measure induced by Liouville Conformal Field Theory. Using the theory of Dirichlet forms, we construct a weak…

Probability · Mathematics 2021-01-26 Julien Dubédat , Hao Shen

We develop a compactness theory for super Ricci flows, which lays the foundations for the partial regularity theory in [Bam20b]. Our results imply that any sequence of super Ricci flows of the same dimension that is pointed in an…

Differential Geometry · Mathematics 2023-08-16 Richard H Bamler

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

We present a monotonic expression for the Ricci flow, valid in all dimensions and without curvature assumptions. It is interpreted as an entropy for a certain canonical ensemble. Several geometric applications are given. In particular, (1)…

Differential Geometry · Mathematics 2007-05-23 Grisha Perelman

In this announcement, we exhibit the second variation of Perelman's $\lambda$ and $\nu$ functionals for the Ricci flow, and investigate the linear stability of examples. We also define the "central density" of a shrinking Ricci soliton and…

Differential Geometry · Mathematics 2007-05-23 Huai-Dong Cao , Richard S. Hamilton , Tom Ilmanen

In this work, we use the Ricci flow approach to study the gap phenomenon of Riemannian manifolds with non-negative curvature and sub-critical scaling invariant curvature decay. The first main result is a quantitative Ricci flow existence…

Differential Geometry · Mathematics 2023-08-15 Pak-Yeung Chan , Man-Chun Lee

In our previous work, we introduced a special type of Hermitian metrics called {\em torsion-critical,} which are non-K\"ahler critical points of the $L^2$-norm of Chern torsion over the space of all Hermitian metrics with unit volume on a…

Differential Geometry · Mathematics 2025-04-09 Dongmei Zhang , Fangyang Zheng

We prove long-time existence of the Ricci flow starting from complete manifolds with bounded curvature and scale-invariant integral curvature sufficiently pinched with respect to the inverse of its Sobolev constant. Moreover, if the…

Differential Geometry · Mathematics 2024-03-06 Albert Chau , Adam Martens