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In this article we study Chen's flow of curves from theoreical and numerical perspectives. We investigate two settings: that of closed immersed $\omega$-circles, and immersed lines satisfying a cocompactness condition. In each of the…

微分几何 · 数学 2020-04-21 Matthew Cooper , Glen Wheeler , Valentina-Mira Wheeler

Tropical Nevanlinna theory, introduced by Halburd and Southall as a tool to analyze integrability of ultra-discrete equations, studies the growth and complexity of continuous piecewise linear real functions. The purpose of this paper is to…

复变函数 · 数学 2015-03-02 Risto Korhonen , Kazuya Tohge

We develop a holonomy reduction procedure for general Cartan geometries. We show that, given a reduction of holonomy, the underlying manifold naturally decomposes into a disjoint union of initial submanifolds. Each such submanifold…

微分几何 · 数学 2014-05-08 Andreas Cap , A. Rod Gover , Matthias Hammerl

This paper focuses on providing the high order algorithms for the space-time tempered fractional diffusion-wave equation. The designed schemes are unconditionally stable and have the global truncation error $\mathcal{O}(\tau^2+h^2)$, being…

数值分析 · 数学 2017-01-31 Minghua Chen , Weihua Deng

A hypersurface $M^n$ in a real space form ${\bf R}^{n+1}$, $S^{n+1}$, or $H^{n+1}$ is isoparametric if it has constant principal curvatures. This paper is a survey of the fundamental work of Cartan and M\"{u}nzner on the theory of…

微分几何 · 数学 2024-12-19 Thomas E. Cecil , Patrick J. Ryan

We develop a global theory for complete hypersurfaces in $\mathbb{R}^{n+1}$ whose mean curvature is given as a prescribed function of its Gauss map. This theory extends the usual one of constant mean curvature hypersurfaces in…

微分几何 · 数学 2019-02-26 Antonio Bueno , Jose A. Galvez , Pablo Mira

The H\"older continuity of the truncated moment map of a shade function in Euclidean space is established in the vicinity of a principal semi-algebraic set. The proof combines volume bounds of semi-algebraic sets and convex optimization…

经典分析与常微分方程 · 数学 2020-08-14 Mihai Putinar

In this paper, we compute the Tian-Zhu invariant on hypersurfaces of complex projective spaces.

微分几何 · 数学 2007-05-23 Zhiqin Lu

The truncation operation facilitates the articulation and analysis of several aspects of the structure of archimedean vector lattices; we investigate two such aspects in this article. We refer to archimedean vector lattices equipped with a…

泛函分析 · 数学 2019-06-04 Richard N. Ball

This paper examines minimal hypersurfaces in sub-Riemannian Heisenberg groups. We extend the celebrated Simons formula and Kato inequality to the sub-Riemannian setting, and we apply them to obtain integral curvature estimates for stable…

微分几何 · 数学 2025-05-29 Gianmarco Giovannardi , Andrea Pinamonti , Simone Verzellesi

In the context of connections between algebras coming from quantum integrable systems and algebras associated to the orthogonal polynomials of the Askey scheme, we prove that the truncated reflection algebra attached to the Yangian of sl(2)…

数学物理 · 物理学 2019-10-03 Nicolas Crampe , Eric Ragoucy , Luc Vinet , Alexei Zhedanov

We prove new results on existence of solutions for the prescribed gaussian curvature problem on the euclidean sphere S^2. Those results are achieved by relating this problem with the holomorphic triples theory on Riemann surfaces. We think…

微分几何 · 数学 2015-03-20 Alexandre C. Gonçalves

Bennett, Carbery and Tao considered the $k$-linear restriction estimate in $\mathbb{R}^{n+1}$ and established the near optimal $L^\frac2{k-1}$ estimate under transversality assumptions only. We have shown that the trilinear restriction…

经典分析与常微分方程 · 数学 2018-10-31 Ioan Bejenaru

By introducing the notion of distributive constant for a family of closed subschemes, we establish a general form of the second main theorem for algebraic nondegenerate meromorphic mappings from a generalized $p$-Parabolic manifold into a…

复变函数 · 数学 2026-02-17 Si Duc Quang

We study hyperbolicity for quasi-projective varieties where the boundary divisor consists of n+1 numerically parallel effective divisors on a complex projective variety of dimension n, allowing non-empty intersection. Under explicit local…

复变函数 · 数学 2026-03-16 Julie Tzu-Yueh Wang , Zheng Xiao

We prove a topological rigidity theorem for closed hypersurfaces of the Euclidean sphere and of an elliptic space form. It asserts that, under a lower bound hypothesis on the absolute value of the principal curvatures, the hypersurface is…

微分几何 · 数学 2018-09-28 Eduardo Longa , Jaime Ripoll

In a recent paper by Cook, et al., which introduced the concept of unexpected plane curves, the focus was on understanding the geometry of the curves themselves. Here we expand the definition to hypersurfaces of any dimension and, using…

代数几何 · 数学 2018-12-21 B. Harbourne , J. Migliore , U. Nagel , Z. Teitler

Let M be a closed embedded minimal hypersurface in a Euclidean sphere of dimension n+1, we prove that it is strongly rigid. As applications we confirm the conjecture proposed by Choi and Schoen in [3] and the Chern conjecture for n less…

微分几何 · 数学 2023-12-06 Xu Han

Suppose $Y$ is a smooth variety equipped with a top form. We prove a simple theorem giving a sharp lower bound on the geometric genus of a family of subvarieties of $Y$, in terms of the dimension of this family. Two elementary applications…

代数几何 · 数学 2024-10-16 Yeuk Hay Joshua Lam , Federico Moretti , Giovanni Passeri

We prove a result which establishes restrictions on the pseudoholomorphic curves which can exist in a stable Hamiltonian manifold in the presence of certain $\mathbb{R}$-invariant foliations of the symplectization by holomorphic…

辛几何 · 数学 2019-02-08 Agustin Moreno , Richard Siefring