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We investigate Liouville theorems and dimension estimates for the space of exponentially growing holomorphic functions on complete K\"{a}hler manifolds. While our work is motivated by the study of gradient Ricci solitons in the theory of…

微分几何 · 数学 2017-05-17 Ovidiu Munteanu , Jiaping Wang

In this paper, we prove the Miyaoka-Yau inequality for compact K\"ahler manifolds with semi-positive canonical bundle. The key point of the proof is the estimate for the $L^2$-norm of the scalar curvature along the K\"ahler-Ricci flow.

微分几何 · 数学 2018-02-16 Ryosuke Nomura

Given a complete Riemannian manifold satisfying a weighted Poincar\'{e} inequality and having a bounded below Ricci curvature, various vanishing theorems for harmonic functions and harmonic 1-forms have been published. We generalized these…

微分几何 · 数学 2025-07-11 Dinh Tien Dat , Nguyen Thac Dung , Yong Luo

On Kahler manifolds with Ricci curvature bounded from below, we establish some theorems which are counterparts of some classical theorems in Riemannian geometry, for example, Bishop-Gromov's relative volume comparison, Bonnet-Meyers…

微分几何 · 数学 2011-08-23 Gang Liu

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

In this paper, we derive a new monotonicity formula for the plurisuhbarmonic functions on complete K\"ahler manifolds with nonnegative bisectional curvature. As applications we derive the sharp estimates for the dimension of the spaces of…

微分几何 · 数学 2007-05-23 Lei Ni

We study the Liouville type theorems for transversally harmonic and biharmonic maps on foliated Riemannian manifolds

微分几何 · 数学 2016-06-30 Min Joo Jung , Seoung Dal Jung

In this short paper, we prove a Hitchin-Thorpe type inequality for closed 4-manifolds with non-positive Yamabe invariant, and admitting long time solutions of the normalized Ricci flow equation with bounded scalar curvature.

微分几何 · 数学 2011-03-08 Yuguang Zhang , Zhenlei Zhang

We establish a one-parameter family of Harnack inequalities connecting the constrained trace Li-Yau differential Harnack inequality for a nonlinear parabolic equation to the constrained trace Chow-Hamilton Harnack inequality for this…

微分几何 · 数学 2012-08-23 Jia-Yong Wu

In this paper, we study the subcritical biharmonic equation \[\Delta ^2 u=u^\alpha\] on a complete, connected, and non-compact Riemannian manifold $(M^n,g)$ with nonnegative Ricci curvature. Using the method of invariant tensors, we derive…

偏微分方程分析 · 数学 2025-08-21 Xi-Nan Ma , Tian Wu , Wangzhe Wu

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…

微分几何 · 数学 2017-07-07 Shouwen Fang , Tao Zheng

Lower bounds on Ricci curvature limit the volumes of sets and the existence of harmonic functions on Riemannian manifolds. In 1975, Shing Tung Yau proved that a complete noncompact manifold with nonnegative Ricci curvature has no…

微分几何 · 数学 2007-05-23 Christina Sormani

We prove the convergence of K\"ahler-Ricci flow with some small initial curvature conditions. As applications, we discuss the convergence of K\"ahler-Ricci flow when the complex structure varies on a K\"ahler-Einstein manifold.

微分几何 · 数学 2009-07-30 Xiuxiong Chen , Haozhao Li

We prove some Liouville-type theorems for positive harmonic functions on compact Riemannian manifolds with nonnegative Ricci curvature and strictly convex boundary, thereby confirming some cases of Wang's conjecture (J. Geom. Anal. 31,…

偏微分方程分析 · 数学 2026-04-23 Xiaohan Cai

We announce a new proof of the uniform estimate on the curvature of solutions to the Ricci flow on a compact K\"ahler manifold $M^n$ with positive bisectional curvature. In contrast to the recent work of X. Chen and G. Tian, our proof of…

微分几何 · 数学 2007-05-23 Huai-Dong Cao , Bing-Long Chen , Xi-Ping Zhu

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…

微分几何 · 数学 2019-12-19 John Lott , Zhou Zhang

For all complex dimensions n>=2, we construct complete Kaehler manifolds of bounded curvature and non-negative Ricci curvature whose Kaehler--Ricci evolutions immediately acquire Ricci curvature of mixed sign.

微分几何 · 数学 2007-05-23 Dan Knopf

The present paper is devoted to the study a global aspect of the geometry of harmonic mappings and, in particular, infinitesimal harmonic transformations, and represents the application of our results to the theory of Ricci solutions and…

微分几何 · 数学 2019-06-19 Sergey Stepanov , Irina Aleksandrova , Irina Tsyganok

We show that, in toric manifolds, one can characterize the sign of the Ricci curvature in terms of the convexity of the volume functional. More generally we discuss relationships between (i) Ricci curvature and volume, (ii) totally real and…

微分几何 · 数学 2021-06-29 Tommaso Pacini

In this work, we obtain existence criteria for Chern-Ricci flows on noncompact manifolds. We generalize a result by Tossati-Wienkove on Chern-Ricci flows to noncompact manifolds and at the same time generalize a result for Kahler-Ricci…

微分几何 · 数学 2017-08-18 Man-Chun Lee , Luen-Fai Tam