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相关论文: On the inverse Poletskii inequality in metric spac…

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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 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

The paper is devoted to the study of the boundary behavior of mappings. We consider mappings that satisfy inverse moduli inequalities of Poletskii type, under which the images of the domain under the mappings may change. It is proved that a…

复变函数 · 数学 2026-05-21 Zarina Kovba , Evgeny 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

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

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 some problems related to the boundary behavior of maps of domains of Riemannian surfaces. In particular, for mappings satisfying the inverse Poletsky type modulus inequality, we establish the possibility of their continuous…

复变函数 · 数学 2023-03-06 E. A. Sevost'yanov

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

The article is devoted to the study of mappings that distort the modulus of families of paths by the Poletsky inequality type. At boundary points of a domain, we have obtained the H\"{o}lder inequality for such mappings, provided that their…

复变函数 · 数学 2023-05-19 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

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

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 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

We study mappings satisfying the inverse Poletsky-type inequality in a domain of the Euclidean space. Such inequalities are well known and play an important role in the study of quasiconformal and quasiregular mappings. We consider the case…

复变函数 · 数学 2026-04-08 Zarina Kovba , Evgeny Sevost'yanov

We have studied homeomorphisms that satisfy the Poletsky-type inverse inequality in the domain of the Euclidean space. It is proved that the uniform limit of the family of such homeomorphisms is either a homeomorphism into the Euclidean…

复变函数 · 数学 2024-06-06 Evgeny Sevost'yanov , Valery 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

For some class of mappings satisfying upper modular estimates with respect to families of curves, a behavior of the corresponding inverse mappings is investigated. In the terms of prime ends, it is proved that, families of such…

度量几何 · 数学 2016-05-31 R. R. Salimov , E. A. Sevost'yanov

The article is devoted to the study of mappings that satisfy the so-called inverse Poletsky inequality. We consider mappings of quasiextremal distance domains, domains with a locally quasiconformal boundary, and domains which are regular in…

复变函数 · 数学 2023-10-03 M. V. Androschuk , O. P. Dovhopiatyi , N. S. Ilkevych , 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 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
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