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Related papers: On unclosed mappings with Poletsky inequality

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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…

Complex Variables · Mathematics 2026-05-21 Miodrag Mateljevic , Evgeny Sevost'yanov

We study generalized quasiconformal mappings in the context of the inverse Poletsky inequality. We consider the local behavior and the boundary behavior of mappings with the inverse Poletsky inequality. In particular, we obtain logarithmic…

Complex Variables · Mathematics 2023-06-06 Vladimir Gol'dshtein , Evgeny Sevost'yanov , Alexander Ukhlov

A boundary behavior of closed open discrete mappings of Sobolev and Orlicz--Sobolev classes in ${\Bbb R}^n,$ $n\ge 3,$ is studied. It is proved that, mappings mentioned above have a continuous extension to boundary point $x_0$ of a domain…

Complex Variables · Mathematics 2016-02-15 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…

Complex Variables · Mathematics 2022-05-09 R. R. Salimov , E. A. Sevost'yanov , V. A. Targonskii

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.

Metric Geometry · Mathematics 2018-08-02 E. A. 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…

Complex Variables · Mathematics 2015-12-16 D. P. Ilyutko , E. A. Sevost'yanov

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…

Complex Variables · Mathematics 2023-09-28 V. S. Desyatka , E. A. 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…

Complex Variables · Mathematics 2024-06-06 Evgeny Sevost'yanov , Valery Targonskii

We investigate distortion estimates for mappings at boundary points of a domain. We consider mappings of the Sobolev and Orlicz-Sobolev classes and some other classes of mappings that do not preserve the boundary of a domain. For above…

Complex Variables · Mathematics 2026-03-17 Victoria Desyatka , Zarina Kovba , Evgeny Sevost'yanov

We study problems related to continuous boundary extension of mappings of Orlicz-Sobolev classes in terms of prime ends. The results we obtain concern the case when the mappings are open, discrete, but not closed (not preserving the…

Complex Variables · Mathematics 2026-05-18 Zarina Kovba , Evgeny Sevost'yanov

The behavior of a class of mappings of a domain of Euclidean space is studied. It is established that the indicated class is equicontinuous both at the inner and at the boundary points of the domain if the mappings contained in it satisfy…

Metric Geometry · Mathematics 2019-11-05 E. A. Sevost'yanov , S. O. Skvortsov

In this paper, we consider mappings on uniform domains with exponentially integrable distortion whose Jacobian determinants are integrable. We show that such mappings can be extended to the boundary and moreover these extensions are…

Complex Variables · Mathematics 2024-10-15 Tuomo Akkinen , Chang-Yu Guo

We study local connectedness, local accessibility and finite connectedness at the boundary, in relation to the compactness of the Mazurkiewicz completion of a bounded domain in a metric space. For countably connected planar domains we…

Metric Geometry · Mathematics 2016-04-07 Anders Björn , Jana Björn , Nageswari Shanmugalingam

We study the possibility of a continuous extension of a class of mappings to an isolated point on the boundary of a domain. We show that if some characteristic of this mapping is integrable on almost all spheres in the neighborhood of at…

Complex Variables · Mathematics 2025-11-04 Victoria Desyatka , Evgeny Sevost'yanov

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…

Complex Variables · Mathematics 2015-02-10 Denis Kovtonyuk , Igor Petkov , Vladimir Ryazanov

We consider families of mappings with moduli inequalities, having different definition domains. Under some additional assumptions we have proved that such families are uniformly equicontinuous. We have considered four main cases: when…

Complex Variables · Mathematics 2026-05-22 N. Ilkevych , D. Romash , E. Sevost'yanov

The article is devoted to establishing the distortion of the modulus of families of paths in wide classes of mappings that admit branch points. In particular, for mappings that are differentiable almost everywhere and have $N$- and $N^{\,-…

Complex Variables · Mathematics 2022-06-22 Evgeny Sevost'yanov , Valery Targonskii

We investigate non-homeomorphic mappings of Riemannian surfaces of Sobolev class. We have obtained some estimates of distortion of moduli of families of curves. We have proved that, under some conditions, these mappings have a continuous…

Complex Variables · Mathematics 2022-09-27 Evgeny Sevost'yanov , Oleksandr Dovhopiatyi , Nataliya Ilkevych , Vitalina Kalenska

In this note we study the Dirichlet problem associated with a version of prime end boundary of a bounded domain in a complete metric measure space equipped with a doubling measure supporting a Poincare inequality. We show the resolutivity…

Metric Geometry · Mathematics 2014-05-13 Dewey Estep , Nageswari Shanmugalingam

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…

Complex Variables · Mathematics 2022-07-22 E. Sevost'yanov , V. Targonskii