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相关论文: Minimality for unions of 2-dimensional minimal con…

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In this article we prove the topological minimality of unions of several almost orthogonal planes of arbitrary dimensions. A particular case was proved in arXiv:1103.1468, where we proved the Almgren minimality (which is a weaker property…

经典分析与常微分方程 · 数学 2013-12-13 Xiangyu Liang

We discuss the global regularity of 2 dimensional minimal sets that are near a union of two planes, and prove that every global minimal set in R^4 that looks like a union of two almost orthogonal planes at infinity is a cone. The main point…

经典分析与常微分方程 · 数学 2012-05-15 Xiangyu Liang

In this article we prove that the union of two almost orthogonal planes in R4 is Almgren-minimal. This gives an example of a one parameter family of minimal cones, which is a phenomenon that does not exist in R3. This work is motivated by…

经典分析与常微分方程 · 数学 2014-02-26 Xiangyu Liang

In this article we prove the measure stability for all 2-dimensional Almgren minimal cones in $\mathbb{R}^n$, and the Almgren (resp. topological) sliding stability for the 2-dimensional Almgren (resp. topological) minimal cones in…

经典分析与常微分方程 · 数学 2018-08-30 Xiangyu Liang

In this article we treat two closely related problems: 1) the upper semi continuity property for Almgren minimal sets in regions with regular boundary, which guanrantees that the uniqueness property is well defined; and 2) the Almgren…

经典分析与常微分方程 · 数学 2018-08-30 Xiangyu Liang

In this article we introduce a definition of topological minimal sets, which is a generalization of that of Mumford-Shah-minimal sets. We prove some general properties as well as two existence theorems for topological minimal sets. As an…

经典分析与常微分方程 · 数学 2011-03-22 Xiangyu Liang

This article is dedicated to discuss the sliding stability and the uniqueness property for the 2-dimensional minimal cone YXY in R4. This problem is motivated by the classification of singularities for Almgren minimal sets, a model for…

经典分析与常微分方程 · 数学 2024-04-23 Xiangyu Liang

We prove some uniqueness results for conics of minimal area that enclose a compact, full-dimensional subset of the elliptic plane. The minimal enclosing conic is unique if its center or axes are prescribed. Moreover, we provide sufficient…

度量几何 · 数学 2010-08-26 Matthias J. Weber , Hans-Peter Schröcker

We show that directed minimal cones in (n+1)-dimensional Euclidean space which have at most one singularity are - besides the trivial cases: empty set, whole space - half spaces. Using blow-up techniques, this result can be used to get…

偏微分方程分析 · 数学 2007-05-23 Oliver C. Schnuerer

In this paper, we prove that the product of a paired calibrated set and a set of codimension 1 calibrated by a coflat calibration with small singularity set is Almgren minimal. This is motivated by the attempt to classify all possible…

经典分析与常微分方程 · 数学 2024-04-23 Xiangyu Liang

In this paper we discuss various minimality properties for the orthogonal product of two 1-dimensional $\Y$ sets, and some related problems. This is motivated by an attempt to give the classification of singularities for 2-dimensional…

经典分析与常微分方程 · 数学 2012-03-14 Xiangyu Liang

We prove that a connected properly immersed minimal surface in Euclidean 3-space with infinite symmetry group whose intersection with a ball of radius R is less than 2\piR^2 is a plane, a catenoid or a Scherk singly-periodic minimal…

微分几何 · 数学 2007-05-23 William H. Meeks , Michael Wolf

We show that the only nonlocal $s$-minimal cones in $\R^2$ are the trivial ones for all $s \in (0,1)$. As a consequence we obtain that the singular set of a nonlocal minimal surface has at most $n-3$ Hausdorff dimension.

偏微分方程分析 · 数学 2012-02-07 Ovidiu Savin , Enrico Valdinoci

We discuss the global regularity for 2 dimensional minimal sets that are near a $\T$ set, that is, whether every global minimal set in $\R^n$ that looks like a $\T$ set at infinity is a $\T$ set or not. The main point is to use the…

经典分析与常微分方程 · 数学 2012-03-05 Xiangyu Liang

In this paper, we consider complete non-catenoidal minimal surfaces of finite total curvature with two ends. A family of such minimal surfaces with least total absolute curvature is given. Moreover, we obtain a uniqueness theorem for this…

微分几何 · 数学 2016-03-09 Shoichi Fujimori , Toshihiro Shoda

We show that a weighted homogeneous complex surface singularity is metrically conical (i.e., bi-Lipschitz equivalent to a metric cone) only if its two lowest weights are equal. We also give an example of a pair of weighted homogeneous…

代数几何 · 数学 2008-09-04 Lev Birbrair , Alexandre Fernandes , Walter D. Neumann

A topological group is minimal if it does not admit a strictly coarser Hausdorff group topology. The Roelcke uniformity (or lower uniformity) on a topological group is the greatest lower bound of the left and right uniformities. A group is…

一般拓扑 · 数学 2021-08-25 V. V. Uspenskij

Using a new definition of rank for representations of semisimple groups sharp results are proved for the decay of matrix coefficients of unitary representations of two types of non-split $p$-adic simple algebraic groups of exceptional type.…

表示论 · 数学 2007-05-23 Hadi Salmasian

We show that for every $k\ge 3$ there exist complex algebraic cones of dimension $k$ with isolated singularities, which are bi-Lipschitz and semi-algebraically equivalent but they have different degrees. We also prove that homeomorphic…

代数几何 · 数学 2023-09-14 Alexandre Fernandes , Zbigniew Jelonek , José Edson Sampaio

This paper is the fifth and final in a series on embedded minimal surfaces. Following our earlier papers on disks, we prove here two main structure theorems for non-simply connected embedded minimal surfaces of any given fixed genus. The…

微分几何 · 数学 2012-11-21 Tobias H. Colding , William P. Minicozzi
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