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相关论文: Contact Angle for Immersed Surfaces in $S^{2n+1}$

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The present paper describes a way to relate Martin boundaries on spaces of varying topology. This enables us to approach some detailed inductive analysis of the eigenfunctions of conformal Laplacians on minimal hypersurfaces near their…

微分几何 · 数学 2008-08-15 Joachim Lohkamp

We present a contact mechanics problem, which we consider to be representative for contacts between nominally flat surfaces. The main ingredients of the mathematically fully defined contact problem are: Self-affine roughness, linear…

软凝聚态物质 · 物理学 2015-12-09 Martin H. Müser , Wolf B. Dapp

As the sequel to [5, 7], we construct a simply connected minimal complex surface of general type with p_g = 0 and K^2 = 4 by using a rational blow-down surgery and Q-Gorenstein smoothing theory.

代数几何 · 数学 2014-11-11 Heesang Park , Jongil Park , Dongsoo Shin

This paper deals with finding surfaces in $\mathbb{R}^3$ which are as close as possible to being flat and span a given contour such that the contour is a geodesic on the sought surface. We look for a surface which minimizes the total…

微分几何 · 数学 2024-07-30 Tom Gilat

We construct a surface that is obtained from the octahedron by pushing out 4 of the faces so that the curvature is supported in a copy of the Sierpinski gasket in each of them, and is essentially the self similar measure on SG. We then…

偏微分方程分析 · 数学 2020-07-15 Iancu Dima , Rachel Popp , Robert S. Strichartz , Samuel C. Wiese

We shall discuss the class of surfaces with holomorphic right Gauss maps in non-compact duals of compact semisimple Lie groups (e.g. SL(n,C)/SU(n)), which contains minimal surfaces in R^n and constant mean curvature 1 surfaces in H^3. A…

微分几何 · 数学 2007-05-23 Masatoshi Kokubu , Masaro Takahashi , Masaaki Umehara , Kotaro Yamada

We consider a three dimensional liquid drop sitting on a rough and chemically heterogeneous substrate. Using a novel minimization technique on the free energy of this system, a generalized Young's equation for the contact angle is found. In…

软凝聚态物质 · 物理学 2007-05-23 P. S. Swain , Reinhard Lipowsky

This paper advances an analytical incremental contact model for the purely elastic or elastic-perfectly plastic Gaussian rough surfaces. The contact is modelled by the accumulation of identical circular contacts with radius given by the…

材料科学 · 物理学 2022-04-06 Sihe Wang , Weike Yuan , Xuanming Liang , Gangfeng Wang

In this paper, we consider the problem of finding the hypersurface M^n in the Euclidean (n+1)-space R^{n+1} that satisfies an equation of mean curvature type, called singular minimal hypersurface equation. Such an equation physically…

微分几何 · 数学 2019-12-02 Ayla Erdur , Mahmut Ergut , Muhittin Evren Aydin

Let $M^n$ be a compact hypersurface with constant mean curvature $H$ in $\mathbb{S}^{n+1}$. Denote by $S$ the squared norm of the second fundamental form of $M$. We prove that there exists a positive constant $\gamma(n)$ depending only on…

微分几何 · 数学 2013-08-20 Hong-wei Xu , Zhi-yuan Xu

Ricci-Curbastro established necessary and sufficient conditions for a Riemannian metric on a surface to be the first fundamental form of a minimal immersion of that surface into the Euclidean space. We revisit certain developments arising…

微分几何 · 数学 2024-01-18 Lucas Ambrozio

We study minimal Lagrangian surfaces in the complex hyperbolic quadric. We show that minimality of a Lagrangian surface is characterized by a loop of flat connections, which yields an associated $\mathbb S^1$-family of isometric…

微分几何 · 数学 2026-05-19 Shimpei Kobayashi , Sihao Zeng

We introduce a structural approach to study Lagrangian submanifolds of the complex hyperquadric in arbitrary dimension by using its family of non-integrable almost product structures. In particular, we define local angle functions encoding…

微分几何 · 数学 2019-06-10 Haizhong Li , Hui Ma , Joeri Van der Veken , Luc Vrancken , Xianfeng Wang

We study singularities and geometric properties of surfaces given by the singular loci of normal congruence of frontals with pure-frontal singular points. These surfaces consist of the normal ruled surface and focal surfaces of the initial…

微分几何 · 数学 2022-07-15 Samuel P. dos Santos , Keisuke Teramoto

We explore a natural generalization of systolic geometry to Finsler metrics and optical hypersurfaces with special emphasis on its relation to the Mahler conjecture and the geometry of numbers. In particular, we show that if an optical…

微分几何 · 数学 2020-10-16 Juan-Carlos Alvarez Paiva , Florent Balacheff , Kroum Tzanev

The minimal surfaces meeting in triples with equal angles along a common boundary naturally arise from soap films and other physical phenomenon. They are also the natural extension of the usual minimal surface. In this paper, we consider…

微分几何 · 数学 2022-11-23 Gaoming Wang

We get new results (and rederive some know ones) on smooth surfaces in $\mathbb{R}^n$ by unifying several view points into a coherent general view. Namely, we show and use new relations of the evolute (caustic) with the curvature ellipse,…

微分几何 · 数学 2025-09-09 Ricardo Uribe-Vargas

We classify the Lagrangian orientable surfaces in complex space forms with the property that the ellipse of curvature is always a circle. As a consequence, we obtain new characterizations of the Clifford torus of the complex projective…

微分几何 · 数学 2015-06-26 Ildefonso Castro

We extend the techniques introduced in \cite{DoMaB1} for contractible Riemann surfaces to construct minimal Lagrangian immersions from arbitrary Riemann surfaces into $\mathbb{C}P^2$ via the loop group method. Based on the potentials of…

微分几何 · 数学 2024-05-07 Josef F. Dorfmeister , Hui Ma

Using a new estimate for the Peng-Terng invariant and the multiple-parameter method, we verify a rigidity theorem on the stronger version of Chern Conjecture for minimal hypersurfaces in spheres. More precisely, we prove that if $M$ is a…

微分几何 · 数学 2017-12-05 Li Lei , Hongwei Xu , Zhiyuan Xu
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