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The article is devoted to questions concerning the problems of compactness of solutions of the Dirichlet problem for the Beltrami equation in some simply connected domain. In terms of prime ends, we have proved results of a detailed form…

Complex Variables · Mathematics 2021-05-21 O. Dovhopiatyi , E. Sevost'yanov

We have proved theorems on compact classes of homeomorphisms with hydrodynamic normalization that are solutions of the Beltrami equation, whose characteristics are compactly supported and satisfy certain constraints of the theoretical-set…

Analysis of PDEs · Mathematics 2020-12-29 O. P. Dovhopiatyi , E. A. Sevost'yanov

We have proved theorems on compact classes of homeomorphisms with hydrodynamic normalization that are solutions of the Beltrami equation, whose characteristics are compactly supported and satisfy certain constraints of an integral type. As…

Complex Variables · Mathematics 2020-12-29 E. A. Sevost'yanov , O. P. Dovhopiatyi

It is developed the theory of the boundary behavior of homeomorphic solutions of the Beltrami equations ${\bar{\partial}}f=\mu\,{\partial}f$ of the Sobolev class $W^{1,1}_{\rm loc}$ with respect to prime ends of domains. On this basis,…

Complex Variables · Mathematics 2015-03-31 Denis Kovtonyuk , Igor' Petkov , Vladimir Ryazanov

We characterize those compact sets for which the Dirichlet problem has a solution within the class of continuous $m$-subharmonic functions defined on a compact set, and then within the class of $m$-harmonic functions.

Complex Variables · Mathematics 2018-12-18 Per Ahag , Rafal Czyz , Lisa Hed

In this article, first we give a general lemma on the existence of regular homeomorphic solutions $f$ with the hydrodynamic normalization $f(z)=z+o(1)$ as $z\to\infty$ to the degenerate Beltrami equations $\overline{\partial}f=\mu\,\partial…

Complex Variables · Mathematics 2022-01-17 V. Gutlyanskii , V. Ryazanov , E. Sevos'yanov , E. Yakubov

We show that arbitrary homeomorphic solutions to the Beltrami equations with generalized derivatives satisfy certain moduli inequalities. On this basis, we develope the theory of the boundary behavior of such solutions and prove a series of…

Complex Variables · Mathematics 2012-01-27 Denis Kovtonyuk , Igor Petkov , Vladimir Ryazanov , Ruslan Salimov

We have found one of the possible conditions under which the Beltrami equation with degeneration of ellipticity has a continuous solution of the Sobolev class. With some additional requirements, this solution is homeomorphic

Complex Variables · Mathematics 2019-05-27 Evgeny Sevost'yanov

We consider problems concerning the existence of solutions of the Beltrami equations and their convergence in the entire complex plane. We are mainly interested in the case when these solutions satisfy the so-called hydrodynamic…

Complex Variables · Mathematics 2022-03-08 Evgeny Sevost'yanov , Oleksandr Dovhopiatyi

We give a blow-up behavior for solutions to a problem with singularity and with Dirichlet condition. An application, we have a compactness of the solutions to this Problem with singularity and Lipschitz conditions.

Analysis of PDEs · Mathematics 2018-09-26 Samy Skander Bahoura

The main result of the paper is an extension of the Dirichlet problem from (closures of) bounded open domains U to arbitrary compact subsets X of the complex plane, i.e. the closure of the corresponding space of functions which are harmonic…

Operator Algebras · Mathematics 2014-05-14 Ulrich Haag

It is developed the theory of the Dirichlet problem for harmonic functions. On this basis, for the nondegenerate Beltrami equations in the quasidisks and, in particular, in the smooth domains, it is proved the existence of regular solutions…

Complex Variables · Mathematics 2017-10-19 Artyem Yefimushkin , Vladimir Ryazanov

We solve the classical Dirichlet problem for a general complex Hessian equation on a small ball in $\bC^n$. Then, we show that there is a continuous solution, in pluripotential theory sense, to the Dirichlet problem on compact Hermitian…

Differential Geometry · Mathematics 2017-08-23 Dongwei Gu , Ngoc Cuong Nguyen

The present paper is devoted to the study of the Dirichlet problem ${\rm{Re}}\,\omega(z)\to\varphi(\zeta)$ as $z\to\zeta,$ $z\in D,\zeta\in \partial D,$ with continuous boundary data $\varphi :\partial D\to\mathbb R$ for Beltrami equations…

Complex Variables · Mathematics 2023-05-30 V. Gutlyanski\uı , O. Nesmelova , V. Ryazanov , E. Yakubov

We prove the solvability of a Dirichlet problem for flat hermitian metrics on Hilbert bundles over compact Riemann surfaces with boundary. We also prove a factorization result for flat hermitian metrics on doubly connected domains.

Complex Variables · Mathematics 2018-04-17 Kuang-Ru Wu

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

We consider a variational problem with boundary singularity and Dirichlet condition. We give a blow-up analysis for sequences of solutions of an equation with exponential nonlinearity. Also, we derive a compactness criterion under some…

Analysis of PDEs · Mathematics 2018-10-26 Samy Skander Bahoura

In this two papers we deal with the relative homotopy Dirichlet problem for p-harmonic maps from compact manifolds with boundary to manifolds of non-positive sectional curvature. Notably, we give a complete solution to the problem in case…

Differential Geometry · Mathematics 2015-02-06 Stefano Pigola , Giona Veronelli

We prove a compactness and semicontinuity result that applies to minimisation problems in nonhomogeneous linear elasticity under Dirichlet boundary conditions. This generalises a previous compactness theorem that we proved and employed to…

Analysis of PDEs · Mathematics 2021-10-06 Antonin Chambolle , Vito Crismale

As explained in detail in the prologue to this manuscript, boundedness of weak solutions for general classes of elliptic equations in divergence form is a classic tool for achieving higher regularity. We propose here some global boundedness…

Analysis of PDEs · Mathematics 2025-12-23 Giovanni Cupini , Paolo Marcellini
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