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It is established a continuous boundary extension of some class of mappings. Under some additional conditions, we have established that this extension is light in the closure of the definition domain. Under some stronger conditions, we also…

复变函数 · 数学 2022-11-08 Evgeny Sevost'yanov

We have proved that homeomorphisms of domains of Euclidean space, inverse of which distort the modulus of families of curves by Poletskii type, have a continuous extension to isolated boundary point.

度量几何 · 数学 2018-08-02 E. A. Sevost'yanov

The manuscript is devoted to the boundary behavior of mappings with bounded and finite distortion. We consider mappings of domains of the Euclidean space that satisfy weighted Poletsky inequality. Assume that, the definition domain is…

复变函数 · 数学 2024-04-08 Victoria Desyatka , Evgeny Sevost'yanov

We consider mappings that distort the modulus of families of paths in the opposite direction in the manner of Poletsky's inequality. Here we study the case when the mappings are not closed, in particular, they do not preserve the boundary…

复变函数 · 数学 2024-09-06 Evgeny Sevost'yanov , Victoria Desyatka Zarina Kovba

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

We consider open discrete mappings of Riemannian manifolds that satisfy some modulus inequality. We investigate the possibility of a continuous extension of such mappings to an isolated point on the boundary. It is proved that, these…

复变函数 · 数学 2023-09-28 V. S. Desyatka , E. A. Sevost'yanov

We consider open discrete mappings that satisfy the modulus condition of the inverse Poletsky inequality type. We study the case when the majorant in it is integrable, or more generally, has finite averages over infinitesimal spheres. We…

复变函数 · 数学 2023-08-15 Victoria Desyatka , Evgeny Sevost'yanov

We have studied the local and boundary behavior of mappings satisfying one estimate of the distortion of the modulus of families of paths. In particular, we have obtained conditions under which the families of the indicated mappings are…

经典分析与常微分方程 · 数学 2019-04-03 E. A. Sevost'yanov , S. O. Skvortsov , O. P. Dovhopiatyi

We study mappings that satisfy the inverse Poletsky inequality in a domain of the Euclidean space. Under certain conditions on the definition and mapped domains, it is established that they have a continuous extension to the boundary in…

复变函数 · 数学 2022-11-10 Evgeny Sevost'yanov

We study mappings defined in the domain of a metric space that distort the modulus of families of paths by the type of the inverse Poletskii inequality. Under certain conditions, it is proved that such mappings have a continuous extension…

复变函数 · 数学 2021-07-19 Evgeny Sevost'yanov

This paper is devoted to the study of mappings with finite distortion, in particular, mappings satisfying the inverse Poletskii inequality. We study the problem of equicontinuity of families of such mappings in a given domain. We establish…

复变函数 · 数学 2026-05-21 Miodrag Mateljevic , Evgeny Sevost'yanov

The paper is devoted to the study of mappings with finite distortion, actively studied recently. For mappings whose inverse satisfy the Poletsky inequality, the results on boundary behavior in terms of prime ends are obtained. In…

复变函数 · 数学 2019-01-15 E. A. Sevost'yanov , S. A. Skvortsov , N. S. Ilkevych

The manuscript is devoted to the boundary behavior of mappings with bounded and finite distortion, which has been actively studied recently. We consider mappings of domains of the Euclidean space that satisfy the inverse Poletsky inequality…

复变函数 · 数学 2026-04-14 Victoria Desyatka , Evgeny Sevost'yanov

The article is devoted to mappings with bounded and finite distortion of plane domains. Our investigations are devoted to the connection between mappings of the Sobolev class and upper bounds for the distortion of the modulus of families of…

复变函数 · 数学 2022-05-09 R. R. Salimov , E. A. Sevost'yanov , V. A. Targonskii

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

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

The article is devoted to the study of mappings that distort the modulus of families of paths according to the Poletsky inequality type. At the boundary points of the domain, we have obtained an estimate of the distance distortion for such…

复变函数 · 数学 2023-05-19 O. P. Dovhopiatyi , E. A. Sevost'yanov

For mapping with branching points that satisfy the inverse inequality of Poletsky, we obtained the results of their continuous boundary extension in terms of prime ends. Under certain conditions, the specified classes od mappings are also…

复变函数 · 数学 2020-04-13 E. A. Sevost'yanov

In this paper, we obtain upper estimates for the distortion of the modulus of families of paths under mappings of the Sobolev class, whose dilatation is locally integrable. As a consequence, theorems on the local and boundary behavior of…

复变函数 · 数学 2019-04-18 E. Sevost'yanov

For some class of mappings, there are investigated problems connected with a possibility of continuous extension to a boundary on Riemannian manifolds. In particular, for so-called ring mappings, there is proved a result related to…

复变函数 · 数学 2015-12-16 D. P. Ilyutko , E. A. Sevost'yanov
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