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In this short paper we extend the classical Hoffman-Meeks Halfspace Theorem to self-shrinkers, that is: "Let $P $ be a hyperplane passing through the origin. The only properly immersed self-shrinker $\Sigma$ contained in one of the closed…

微分几何 · 数学 2016-06-22 Marcos P. Cavalcante , Jose M. Espinar

We study integral and pointwise bounds on the second fundamental form of properly immersed self-shrinkers with boundedHA. As applications, we discuss gap and compactness results for self-shrinkers.

微分几何 · 数学 2021-09-03 Zhen Wang

We prove symplectic non-squeezing (in the sense of Gromov) for the cubic nonlinear Schr\"odinger equation on $\R^2$. This is the first symplectic non-squeezing result for a Hamiltonian PDE in infinite volume. As the underlying symplectic…

偏微分方程分析 · 数学 2016-06-27 Rowan Killip , Monica Visan , Xiaoyi Zhang

Let $(M,\bar{g}, e^{-f}d\mu)$ be a complete metric measure space with Bakry-\'Emery Ricci curvature bounded below by a positive constant. We prove that, in $M$, there is no complete two-sided $L_f$-stable immersed $f$-minimal hypersurface…

微分几何 · 数学 2012-10-31 Xu Cheng , Tito Mejia , Detang Zhou

In this note we will prove that an $n$ dimensional graphic self-shrinker in $R^{n+m}$ with flat normal bundle is a linear subspace. This result is a generalization of the corresponding result of Lu Wang in codimension one case.

微分几何 · 数学 2012-04-19 Yong Luo

In this paper, we study complete space-like $\lambda$-hypersurfaces in the Lorentzian space $\mathbb R^{n+1}_1$. As the result, we prove some rigidity theorems for these hypersurfaces including the complete space-like self-shrinkers in…

微分几何 · 数学 2015-11-11 Xingxiao Li , Xiufen Chang

Already in $\bf{R}^4$, there are many known examples of minimal hypersurfaces, yet few structural results. We show that minimal submanifolds, of any dimension, that are confined in space are very restricted. It is well-known that the…

微分几何 · 数学 2026-05-22 Tobias Holck Colding , William P. Minicozzi

Discretization of the uniform norm of functions from a given finite dimensional subspace of continuous functions is studied. We pay special attention to the case of trigonometric polynomials with frequencies from an arbitrary finite set…

数值分析 · 数学 2021-12-14 Boris Kashin , Sergei Konyagin , Vladimir Temlyakov

In this paper, we investigate the rigidity problems of complete hypersurfaces with constant mean curvature and constant scalar curvature in Euclidean spaces. Firstly, under some conditions of Gaussian-Kronecker curvature, we provide…

微分几何 · 数学 2025-12-30 Jianquan Ge , Ya Tao

In this paper, we obtain several classification results of $2$-dimensional complete Lagrangian translators and lagrangian self-expanders with constant squared norm $|\vec{H}|^{2}$ of the mean curvature vector in $\mathbb{C}^{2}$ by using a…

微分几何 · 数学 2024-05-24 Zhi Li , Guoxin Wei

We develop a probabilistic framework for large-scale dimension bounds in metric geometry, based on padded decompositions, randomized ball carving on net graphs, and the Lov\'asz Local Lemma. For metric measure spaces with volume doubling…

度量几何 · 数学 2026-05-18 Jing Yu , Xingyu Zhu

In this paper we show that a complete and non-compact surface immersed in the Euclidean space with quadratic extrinsic area growth has finite total curvature provided the surface has tamed second fundamental form and admits total curvature.…

微分几何 · 数学 2015-02-17 Cristiane M. Brandao , Vicent Gimeno

An infinite family of classical superintegrable Hamiltonians defined on the N-dimensional spherical, Euclidean and hyperbolic spaces are shown to have a common set of (2N-3) functionally independent constants of the motion. Among them, two…

数学物理 · 物理学 2011-07-19 Angel Ballesteros , Francisco J. Herranz

In this paper we obtain three results concerning the geometry of complete noncompact positively curved K\"{a}hler manifolds at infinity. The first one states that the order of volume growth of a complete noncompact K\"{a}hler manifold with…

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

We prove that any complete metric on R^3 minus a ball with non-negative Ricci curvature and quadratic Ricci-curvature decay, has cubic volume growth.

微分几何 · 数学 2012-12-07 Martin Reiris

In this paper, we present a sufficient condition for finite Morse index of complete properly self-shrinkers. We prove that a complete properly embedded self-shrinker in $\mathbb{R}^{n+1}$ with finite asymptotically conical ends or…

微分几何 · 数学 2021-06-24 Xu-Yong Jiang , He-Jun Sun , Peibiao Zhao

We design new tools to study variants of Total Dual Integrality. As an application, we obtain a geometric characterization of Total Dual Integrality for the case where the associated polyhedron is non-degenerate. We also give sufficient…

组合数学 · 数学 2025-03-12 Bertrand Guenin , Levent Tunçel

Let M be a complete non-compact connected Riemannian n-dimensional manifold. We first prove that, for any fixed point p in M, the radial Ricci curvature of M at p is bounded from below by the radial curvature function of some non-compact…

微分几何 · 数学 2011-06-09 Kei Kondo , Minoru Tanaka

In this article we show the existence of closed embedded self-shrinkers in $\Bbb{R}^{n+1}$ that are topologically of type $S^1\times M$, where $M\subset S^n$ is any isoparametric hypersurface in $S^n$ for which the multiplicities of the…

微分几何 · 数学 2023-04-04 Oskar Riedler

We show that two properly embedded self-shrinkers in Euclidean space that are sufficiently separated at infinity must intersect at a finite point. The proof is based on a localized version of the Reilly formula applied to a suitable…

微分几何 · 数学 2020-07-29 Debora Impera , Stefano Pigola , Michele Rimoldi