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We develop heat kernel and Green's function estimates for manifolds with positive bottom spectrum. The results are then used to establish existence and sharp estimates of the solution to the Poisson equation on such manifolds with Ricci…

微分几何 · 数学 2017-01-12 Ovidiu Munteanu , Chiung-Jue Anna Sung , Jiaping Wang

Two sharp comparison results are derived for three-dimensional complete noncompact manifolds with scalar curvature bounded from below. The first one concerns the Green's function. When the scalar curvature is nonnegative, it states that the…

微分几何 · 数学 2021-05-26 Ovidiu Munteanu , Jiaping Wang

This paper is devoted to the investigation of the monotonicity of parabolic frequency functional under conformal Ricci flow defined on a closed Riemannian manifold of constant scalar curvature and dimension not less than 3. Parabolic…

偏微分方程分析 · 数学 2024-01-09 Abimbola Abolarinwa , Shahroud Azami

For meromorphic maps of complex manifolds, ergodic theory and pluripotential theory are closely related. In nice enough situations, dynamically defined Green's functions give rise to invariant currents which intersect to yield measures of…

复变函数 · 数学 2008-03-06 Jeffrey Diller , Vincent Guedj

For a given finite subset $S$ of a compact Riemannian manifold $(M,g)$ whose Schouten curvature tensor belongs to a given cone, we establish a necessary and sufficient condition for the existence and uniqueness of a conformal metric on $M…

偏微分方程分析 · 数学 2021-07-22 YanYan Li , Luc Nguyen

We prove a new positive mass theorem for three-dimensional manifolds which are asymptotically hyperboloidal of order greater than $1$. The mass quantity under consideration is the volume-renormalized mass recently introduced in a paper by…

微分几何 · 数学 2025-06-10 Klaus Kroencke , Francesca Oronzio , Alan Pinoy

We generalize to the ${\rm RCD}(0,N)$ setting a family of monotonicity formulas by Colding and Minicozzi for positive harmonic functions in Riemannian manifolds with non-negative Ricci curvature. Rigidity and almost rigidity statements are…

微分几何 · 数学 2022-01-03 Nicola Gigli , Ivan Yuri Violo

By means of a space-time Wasserstein control, we show the monotonicity of the W-entropy functional in time along heat flows on possibly singular metric measure spaces with non-negative Ricci curvature and a finite upper bound of dimension…

概率论 · 数学 2018-11-20 Kazumasa Kuwada , Xiang-Dong Li

Monotonicity formulae play a crucial role for many geometric PDEs, especially for their regularity theories. For minimal submanifolds in a Euclidean ball, the classical monotonicity formula implies that if such a submanifold passes through…

微分几何 · 数学 2017-05-02 Jonathan J. Zhu

We study the Neumann Green's function for second order parabolic systems in divergence form with time-dependent measurable coefficients in a cylindrical domain $\mathcal{Q}=\Omega\times (-\infty,\infty)$, where $\Omega\subset \mathbb{R}^n$…

偏微分方程分析 · 数学 2018-09-18 Jongkeun Choi , Seick Kim

We discover new monotonicity formulae for minimal submanifolds in space forms, which imply the sharp area bound for minimal submanifolds through a prescribed point in a geodesic ball. These monotonicity formulae involve an energy-like…

微分几何 · 数学 2022-10-10 Keaton Naff , Jonathan J. Zhu

In this paper, we extend the Hamilton's gradient estimates \cite{har93} and a monotonicity formula of entropy \cite{ni04} for heat flows from smooth Riemannian manifolds to (non-smooth) metric measure spaces with appropriate Riemannian…

度量几何 · 数学 2015-12-29 Renjin Jiang , Huichun Zhang

This work is devoted to the study of parabolic frequency for solutions of the heat equation on Riemannian manifolds. We show that the parabolic frequency functional is almost increasing on compact manifolds with nonnegative sectional…

微分几何 · 数学 2018-04-27 Xiaolong Li , Kui Wang

Under a sign assumption on the Minkowski norm, we prove a monotonicity formula for anisotropic minimal hypersurfaces in Euclidean space.

微分几何 · 数学 2026-02-17 Doanh Pham

We develop Green's function estimate for manifolds satisfying a weighted Poincare inequality together with a compatible lower bound on the Ricci curvature. The estimate is then applied to establish existence and sharp estimates of the…

微分几何 · 数学 2019-05-01 Ovidiu Munteanu , Chiung-Jue Anna Sung , Jiaping Wang

We derive monotone properties of positive harmonic functions on three dimensional manifolds with nonnegative scalar curvature, with an asymptotically flat end. Rigidity characterization of spatial Schwarzschild manifolds with two ends is…

微分几何 · 数学 2025-12-22 Pengzi Miao

We consider a closed manifold M with a Riemannian metric g(t) evolving in direction -2S(t) where S(t) is a symmetric two-tensor on (M,g(t)). We prove that if S satisfies a certain tensor inequality, then one can construct a forwards and a…

微分几何 · 数学 2015-10-14 Reto Müller

We establish pointwise estimates for the Green function to the Dirichlet problem for parabolic equation with coefficients measurable in time variable. Using these estimate we obtain coercive estimates for this problem in anisotropic…

偏微分方程分析 · 数学 2009-04-16 V. A. Kozlov , A. I. Nazarov

We consider the porous medium equation (PME) on complete noncompact manifolds $M$ of nonnegative Ricci curvature. We require nonparabolicity of the manifold and construct a natural space $X$ of functions, strictly larger than $L^1$, in…

偏微分方程分析 · 数学 2025-03-27 Gabriele Grillo , Dario D. Monticelli , Fabio Punzo

In this paper we first prove some linear isoperimetric inequalities for submanifolds in the de Sitter-Schwarzschild and Reissner-Nordstrom manifolds. Moreover, the equality is attained. Next, we prove some monotonicity formulas for…

微分几何 · 数学 2019-03-08 Hilário Alencar , Gregório Silva Neto