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The Ricci iteration is a discrete analogue of the Ricci flow. According to Perelman, the Ricci flow converges to a Kahler-Einstein metric whenever one exists, and it has been conjectured that the Ricci iteration should behave similarly.…

Differential Geometry · Mathematics 2021-12-03 Tamás Darvas , Yanir A. Rubinstein

Perelman has given a gradient formulation for the Ricci flow, introducing an ``entropy function'' which increases monotonically along the flow.We pursue a thermodynamic analogy and apply Ricci flow ideas to general relativity. We…

General Relativity and Quantum Cosmology · Physics 2008-11-26 Joseph Samuel , Sutirtha Roy Chowdhury

We consider the Kaehler-Ricci flow on complete finite-volume metrics that live on the complement of a divisor in a compact Kaehler manifold X. Assuming certain spatial asymptotics on the initial metric, we compute the singularity time in…

Differential Geometry · Mathematics 2019-12-19 John Lott , Zhou Zhang

In this note, we want to establish several formulas about functionals along harmonic Ricci flow on surface with boundary

Differential Geometry · Mathematics 2026-05-08 Xiang-Zhi Cao

We show that the twisted K\"ahler-Ricci flow on a complex manifold X converges to a flow of moving free boundaries, in a certain scaling limit. This leads to a new phenomenon of singularity formation and topology change which can be seen as…

Differential Geometry · Mathematics 2016-04-13 Robert J. Berman , Chinh H. Lu

J. Streets and G. Tian recently introduced symplectic curvature flow, a geometric flow on almost K\"ahler manifolds generalising K\"ahler-Ricci flow. The present article gives examples of explicit solutions to this flow of non-K\"ahler…

Symplectic Geometry · Mathematics 2012-02-08 Julian Pook

In this short note we announce a regularity theorem for K\"ahler-Ricci flow on a compact Fano manifold (K\"ahler manifold with positive first Chern class) and its application to the limiting behavior of K\"ahler-Ricci flow on Fano…

Differential Geometry · Mathematics 2013-04-10 Gang Tian , Zhenlei Zhang

For some class of geometric flows, we obtain the (logarithmic) Sobolev inequalities and their equivalence up to different factors directly and also obtain the long time non-collapsing and non-inflated properties, which generalize the…

Differential Geometry · Mathematics 2017-07-07 Shouwen Fang , Tao Zheng

We prove that the conical K\"ahler-Ricci flows introduced in \cite{CYW} exist for all time $t\in [0,+\infty)$. These immortal flows possess maximal regularity in the conical category. As an application, we show if the twisted first Chern…

Differential Geometry · Mathematics 2014-02-27 Xiuxiong Chen , Yuanqi Wang

We consider the K\"ahler-Ricci flow on compact K\"ahler manifolds with semiample canonical bundle and intermediate Kodaira dimension, and show that the flow collapses to a canonical metric on the base of the Iitaka fibration in the locally…

Differential Geometry · Mathematics 2025-05-21 Hans-Joachim Hein , Man-Chun Lee , Valentino Tosatti

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

We investigate the case of the Kahler-Ricci flow blowing down disjoint exceptional divisors with normal bundle O(-k) to orbifold points. We prove smooth convergence outside the exceptional divisors and global Gromov-Hausdorff convergence.…

Differential Geometry · Mathematics 2018-12-14 Jian Song , Ben Weinkove

We show the properties of the blowup limits of \KRf solutions on Fano surfaces if Riemannian curvature is unbounded. As an application, on every toric Fano surface, we prove that \KRf converges to a K\"ahler Ricci soliton metric if the…

Differential Geometry · Mathematics 2009-01-12 Xiuxiong Chen , Bing Wang

In this note we prove some bounds for the extinction time for the Ricci flow on certain 3-manifolds. Our interest in this comes from a question of Grisha Perelman asked to the first author at a dinner in New York City on April 25th of 2003.…

Analysis of PDEs · Mathematics 2007-05-23 Tobias H. Colding , William P. Minicozzi

In this paper we introduce and study a new kind of hyperbolic geometric flows --dissipative hyperbolic geometric flow. This kind of flow is defined by a system of quasilinear wave equations with dissipative terms. Some interesting exact…

Differential Geometry · Mathematics 2007-09-18 Wen-Rong Dai , De-Xing Kong , Kefeng Liu

In this paper, we study the Ricci flow on a closed manifold and finite time interval $[0,T)~(T < \infty)$ on which certain integral curvature energies are finite. We prove that in dimension four, such flow converges to a smooth Riemannian…

Differential Geometry · Mathematics 2021-11-10 Shota Hamanaka

We apply ideas from viscosity theory to establish the existence of a unique global weak solution to the generalized Kahler-Ricci flow in the setting of commuting complex structures. Our results are restricted to the case of a smooth…

Analysis of PDEs · Mathematics 2016-10-07 Jeffrey Streets

In this article, we study the Ricci flow neckpinch in the context of metric measure spaces. We introduce the notion of a Ricci flow metric measure spacetime and of a weak (refined) super Ricci flow associated to convex cost functions (cost…

Differential Geometry · Mathematics 2020-08-25 Sajjad Lakzian , Michael Munn

We introduce a novel curvature flow, the Heterotic-Ricci flow, as the two-loop renormalization group flow of the Heterotic string common sector and study its three-dimensional compact solitons. The Heterotic-Ricci flow is a coupled…

Differential Geometry · Mathematics 2024-04-02 Andrei Moroianu , Ángel J. Murcia , C. S. Shahbazi

In this paper, we study the (normalized) Ricci flow on surfaces with conical singularities. Long time existence is proved for cone angle smaller than $2\pi$. In this case, convergence results are obtained if the Euler number is nonpositive.

Differential Geometry · Mathematics 2015-12-08 Hao Yin