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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

We establish the short-time existence of the Ricci flow on surfaces with a finite number of conic points, all with cone angle between 0 and $2\pi$, where the cone angles remain fixed or change in some smooth prescribed way. For the…

Differential Geometry · Mathematics 2015-07-29 Rafe Mazzeo , Yanir A. Rubinstein , Natasa Sesum

On compact surfaces with or without boundary, Osgood, Phillips and Sarnak proved that the maximum of the determinant of the Laplacian within a conformal class of metrics with fixed area occurs at a metric of constant curvature and, for…

Differential Geometry · Mathematics 2013-04-02 Pierre Albin , Clara L. Aldana , Frédéric Rochon

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

For an ancient Ricci flow asymptotic to a compact integrable shrinker, or a Ricci flow developing a finite-time singularity modelled on the shrinker, we establish the long-time existence of a harmonic map heat flow between the Ricci flow…

Differential Geometry · Mathematics 2025-04-04 Kyeongsu Choi , Yi Lai

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 consider the problem of deforming a one-parameter family of hypersurfaces immersed into closed Riemannian manifolds with positive curvature operator. The hypersurface in this family satisfies mean curvature flow while the ambient metric…

Differential Geometry · Mathematics 2014-08-05 Weimin Sheng , Haobin Yu

We consider the evolution by inverse mean curvature flow of a closed, mean convex and star-shaped hypersurface in the complex hyperbolic space. We prove that the flow is defined for any positive time, the evolving hypersurface stays…

Differential Geometry · Mathematics 2018-03-29 Giuseppe Pipoli

In this paper we analyze the long-time behaviour of 3 dimensional Ricci flow with surgery. We prove that under the topological condition that the initial manifold only has non-aspherical or hyperbolic components in its geometric…

Differential Geometry · Mathematics 2011-12-22 Richard H. Bamler

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

We prove global existence of instantaneously complete Yamabe flows on hyperbolic space of arbitrary dimension $m\geq3$. The initial metric is assumed to be conformally hyperbolic with conformal factor and scalar curvature bounded from…

Analysis of PDEs · Mathematics 2019-11-01 Mario B. Schulz

In this paper, we establish the existence and uniqueness of Ricci flow that admits an embedded closed convex surface in $\mathbb{R}^3$ as metric initial condition. The main point is a family of smooth Ricci flows starting from smooth convex…

Differential Geometry · Mathematics 2021-06-29 Jiuzhou Huang , Jiawei Liu

In this paper we survey some results on Ricci flowing non-smooth initial data. Among other things, we give a non-exhaustive list of various weak initial data which can be evolved with the Ricci flow. We also survey results which show that…

Differential Geometry · Mathematics 2024-11-22 Miles Simon

It is well-known that the Ricci flow of a closed 3-manifold containing an essential minimal 2-sphere will fail to exist after a finite time. Conversely, the Ricci flow of a complete, rotationally symmetric, asymptotically flat manifold…

Differential Geometry · Mathematics 2010-04-13 T Balehowsky , E Woolgar

Until recently, Ricci flow was viewed almost exclusively as a way of deforming Riemannian metrics of bounded curvature. Unfortunately, the bounded curvature hypothesis is unnatural for many applications, but is hard to drop because so many…

Differential Geometry · Mathematics 2014-09-01 Peter M. Topping

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

We introduce a geometric evolution equation for 3-manifolds with sectional curvature of one sign which is in some sense dual to the Ricci flow. On a closed 3-manifold with negative sectional curvature, we establish short time existence and…

Differential Geometry · Mathematics 2007-05-23 Bennett Chow , Richard Hamilton

This paper explores the behavior of the torsional rigidity of a precompact domain as the ambient manifold evolves under a geometric flow. Specifically, we derive bounds on torsional rigidity under the Ricci Flow for Heisenberg spaces and…

Differential Geometry · Mathematics 2026-03-31 Vicent Gimeno i Garcia , Fernán González-Ibáñez

This paper is devoted to the study of the evolution of positively curved metrics on the Wallach spaces $SU(3)/T_{\max}$, $Sp(3)/Sp(1)\times Sp(1)\times Sp(1)$, and $F_4/Spin(8)$. We prove that for all Wallach spaces, the normalized Ricci…

Differential Geometry · Mathematics 2020-05-19 N. A. Abiev , Yu. G. Nikonorov

We show that a simply-connected closed four-dimensional Ricci flow whose Ricci curvature is uniformly bounded below and whose volume does not approach zero must converge to a $C^{0}$ orbifold at any finite-time singularity, so has an…

Differential Geometry · Mathematics 2022-03-02 Max Hallgren