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In this paper, as a continuation of [30], we consider the Gromov-Hausdorff convergence and collapsing in the family of compact Riemannian manifolds with boundary satisfying lower bounds on the sectional curvatures of interior manifolds,…

微分几何 · 数学 2025-04-09 Takao Yamaguchi , Zhilang Zhang

We consider maps between Riemannian manifolds in which the map is a stationary point of the nonlinear Hodge energy. The variational equations of this functional form a quasilinear, nondiagonal, nonuniformly elliptic system which models…

数学物理 · 物理学 2009-10-31 Thomas H. Otway

In the present paper, it was studied the boundary behavior of the so-called lower Q-homeomorphisms in the plane that are a natural generalization of the quasiconformal mappings. In particular, it was found a series of effective conditions…

复变函数 · 数学 2015-02-10 Denis Kovtonyuk , Igor Petkov , Vladimir Ryazanov

In the present article the geometry of semi-Riemannian manifolds with nonholonomic constraints is studied. These manifolds can be considered as analogues to the sub-Riemannian manifolds, where the positively definite metric is substituted…

微分几何 · 数学 2009-01-13 Anna Korolko , Irina Markina

In this paper, we address several interconnected problems in the theory of harmonic maps between Riemannian manifolds. First, we present necessary background and establish one of the main results of the paper: a criterion characterizing…

微分几何 · 数学 2025-07-14 Sergey Stepanov , Irina Tsyganok

The present paper is devoted to questions located at the junction of the theory of space quasiconformal mappings and Riemannian surfaces. Theorems on local behavior of one class of open discrete mappings with unbounded characteristic of…

复变函数 · 数学 2015-02-19 D. P. Ilyutko , E. A. Sevost'yanov

Open discrete mappings with a modulus condition in metric spaces are considered. Some results related to local behavior of mappings as well as theorems about continuous extension to a boundary are proved.

复变函数 · 数学 2016-01-06 Evgeny Sevost'yanov

The space of embedded submanifolds plays an important role in applications such as computational anatomy and shape analysis. We can define two different classes on Riemannian metrics on this space: so-called outer metrics are metrics that…

微分几何 · 数学 2017-09-19 Martins Bruveris

In this paper, we consider boundary extensions of two classes of mappings between metric measure spaces. These two mapping classes extend in particular the well-studied geometric mappings such as quasiregular mappings with integrable…

复变函数 · 数学 2024-03-20 Yao-Lan Tian , Yi Xuan

A Lie group $G$ endowed with a left invariant Riemannian metric $g$ is called Riemannian Lie group. Harmonic and biharmonic maps between Riemannian manifolds is an important area of investigation. In this paper, we study different aspects…

微分几何 · 数学 2014-12-17 Mohamed Boucetta , Seddik Ouakkas

Given only a collection of points sampled from a Riemannian manifold embedded in a Euclidean space, in this paper we propose a new method to solve elliptic partial differential equations (PDEs) supplemented with boundary conditions. Notice…

数值分析 · 数学 2022-11-29 Ryan Vaughn , Tyrus Berry , Harbir Antil

We give an explicit formula for the holonomy of the orientation bundle of a family of real Cauchy-Riemann operators. A special case of this formula resolves the orientability question for spaces of maps from Riemann surfaces with Lagrangian…

辛几何 · 数学 2014-11-11 Penka Georgieva

This article is devoted to the study of mappings defined in the region on the plane. Under certain conditions, the upper estimate of the distortion of the modulus of families of paths is obtained. Similarly, the upper estimate of the…

复变函数 · 数学 2022-07-22 E. Sevost'yanov , V. Targonskii

We consider the 1-harmonic flow of maps from a bounded domain into a submanifold of a Euclidean space, i.e. the gradient flow of the total variation functional restricted to maps taking values in the manifold. We restrict ourselves to…

偏微分方程分析 · 数学 2017-12-08 Lorenzo Giacomelli , Michał Łasica , Salvador Moll

We have studied the mappings that satisfy the Poletsky-type inverse inequality in the domain of the Euclidean space. It is proved that the uniform boundary of the family of such mappings is a discrete mapping. We separately considered…

复变函数 · 数学 2024-04-29 E. O. Sevost'yanov , V. A. Targonskii

In this article we introduce a natural extension of the well-studied equation for harmonic maps between Riemannian manifolds by assuming that the target manifold is equipped with a connection that is metric but has non-vanishing torsion.…

微分几何 · 数学 2021-07-05 Volker Branding

We establish the equivalence between the family of closed uniformly regular Riemannian manifolds and the class of complete manifolds with bounded geometry.

微分几何 · 数学 2016-04-08 Marcelo Disconzi , Yuanzhen Shao , Gieri Simonett

This manuscript is devoted to the study of mappings, satisfying the upper weighted Poletsky inequality. We study the case where the boundary of the domain may not be preserved under the mapping and, besides that, the majorant from the above…

复变函数 · 数学 2026-03-03 Victoria Desyatka , Oleksandr Dovhopiatyi , Evgeny Sevost'yanov

We study open-closed discrete mappings that satisfy the weighted estimate of the distortion of modulus of families of paths. It is proved that the mappings mentioned above have a continuous extension into the isolated point of the boundary,…

复变函数 · 数学 2020-04-30 Evgeny Sevost'yanov

In our previous paper [GSV2020], we proved that the complementary components of a ring domain in $\mathbb{R}^n$ with large enough modulus may be separated by an annular ring domain and applied this result to boundary correspondence problems…

复变函数 · 数学 2025-01-30 Anatoly Golberg , Toshiyuki Sugawa , Matti Vuorinen