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We consider a general inhomogeneous parabolic initial-boundary value problem for a $2b$-parabolic differential equation given in a finite multidimensional cylinder. We investigate the solvability of this problem in some generalized…

Analysis of PDEs · Mathematics 2019-07-10 Valerii Los , Vladimir Mikhailets , Aleksandr Murach

We investigate global and local regularity of generalized solutions to parabolic initial-boundary value problem for Petrovskii system of second order differential equations. Results are formulated in terms of the belonging of right-hand…

Analysis of PDEs · Mathematics 2022-06-09 Oleksandr Diachenko , Valerii Los

We study a general linear parabolic problem for Petrovskii parabolic differential system in Sobolev anisotropic distribution spaces of generalized smoothness. Slowly varying functions are used to characterize supplementary generalized…

Analysis of PDEs · Mathematics 2026-05-06 Valerii Los , Vladimir Mikhailets , Aleksandr Murach

We investigate a general nonhomogeneous parabolic initial-boundary value problem in some anisotropic H\"ormander inner product spaces. We prove that the operators corresponding to this problem are isomorphisms between appropriate…

Analysis of PDEs · Mathematics 2016-10-24 V. M. Los , V. A. Mikhailets , A. A. Murach

The research monograph expounds the foundation of a new theory of parabolic initial-boundary-value problems in scales of generalized anisotropic Sobolev spaces. These scales are calibrated essentially more finely with the help of a function…

Analysis of PDEs · Mathematics 2021-09-09 V. M. Los , V. A. Mikhailets , A. A. Murach

In H\"ormander inner product spaces, we investigate initial-boundary value problems for an arbitrary second order parabolic partial differential equation and the Dirichlet or a general first-order boundary conditions. We prove that the…

Analysis of PDEs · Mathematics 2017-03-13 Valerii Los , Aleksandr Murach

We give an application of interpolation with a function parameter to parabolic differential operators. We introduce the refined anisotropic Sobolev scale that consists of some Hilbert function spaces of generalized smoothness. The latter is…

Analysis of PDEs · Mathematics 2013-11-06 Valerii Los , Aleksandr A. Murach

We consider the most general class of linear inhomogeneous boundary-value problems for systems of ordinary differential equations of an arbitrary order whose solutions and right-hand sides belong to appropriate Sobolev spaces. For…

Classical Analysis and ODEs · Mathematics 2025-12-19 Olena Atlasiuk , Vladimir Mikhailets

We study a wide class of linear inhomogeneous boundary-value problems for $r$th order ODE-systems depending on a parameter $\mu$ in a general metric space $\mathcal M$. The solutions belong to the Sobolev spaces $(W^{n+r}_p)^m$,…

Classical Analysis and ODEs · Mathematics 2025-12-29 Olena Atlasiuk , Vladimir Mikhailets , Jari Taskinen

We study linear systems of ordinary differential equations of an arbitrary order on a finite interval with the most general (generic) inhomogeneous boundary conditions in Sobolev spaces. We investigate the character of solvability of…

Classical Analysis and ODEs · Mathematics 2023-11-27 Olena Atlasiuk , Vladimir Mikhailets

We obtain a new sufficient condition under which generalized solutions to a parabolic initial-boundary-value problem for a Petrovskii system and the homogeneous Cauchy data are classical. The condition is formulated in terms of the…

Analysis of PDEs · Mathematics 2020-06-02 Valerii Los

We study a wide class of linear inhomogeneous boundary-value problems for $r$th order ODE-systems depending on a parameter $\mu$ belonging to a general metric space $\mathcal M$. The solutions belong to the Sobolev spaces $(W^{n+r}_p)^m$,…

Classical Analysis and ODEs · Mathematics 2026-03-31 Olena Atlasiuk , Vladimir Mikhailets , Jari Taskinen

In this paper we study elliptic and parabolic boundary value problems with inhomogeneous boundary conditions in weighted function spaces of Sobolev, Bessel potential, Besov and Triebel-Lizorkin type. As one of the main results, we solve the…

Analysis of PDEs · Mathematics 2021-05-17 Felix Hummel , Nick Lindemulder

The paper contains a review of results on linear systems of ordinary differential equations of an arbitrary order on a finite interval with the most general inhomogeneous boundary conditions in Sobolev spaces. The character of the…

Classical Analysis and ODEs · Mathematics 2024-11-26 Vladimir Mikhailets , Olena Atlasiuk

In this paper we establish weighted $L^{q}$-$L^{p}$-maximal regularity for linear vector-valued parabolic initial-boundary value problems with inhomogeneous boundary conditions of static type. The weights we consider are power weights in…

Analysis of PDEs · Mathematics 2019-03-06 Nick Lindemulder

We investigate a general parabolic initial-boundary value problem with zero Cauchy data in some anisotropic H\"ormander inner product spaces. We prove that the operators corresponding to this problem are isomorphisms between appropriate…

Analysis of PDEs · Mathematics 2017-03-13 Valerii Los , Vladimir A. Mikhailets , Aleksandr A. Murach

Systems of parabolic, possibly degenerate parabolic SPDEs are considered. Existence and uniqueness are established in Sobolev spaces. Similar results are obtained for a class of equations generalizing the deterministic first order symmetric…

Analysis of PDEs · Mathematics 2019-03-14 Máté Gerencsér , István Gyöngy , Nicolai Krylov

The aim of the paper is to develop a general theory of solvability of linear inhomogeneous boundary-value problems for systems of ordinary differential equations of arbitrary order in Sobolev spaces. Boundary conditions are allowed to be…

Classical Analysis and ODEs · Mathematics 2023-10-12 Vladimir Mikhailets , Olena Atlasiuk

We deal with linear parabolic (in sense of Petrovskii) systems of order 2b with discontinuous principal coefficients. A'priori estimates in Sobolev and Sobolev--Morrey spaces are proved for the strong solutions by means of potential…

Analysis of PDEs · Mathematics 2025-12-10 Dian K. Palagachev , Lubomira G. Softova

The paper considers existence of spatially regular solutions for a class of linear Boltzmann transport equations. The related transport problem is an (initial) inflow boundary value problem. This problem is characteristic with variable…

Analysis of PDEs · Mathematics 2025-04-24 Jouko Tervo , Petri Kokkonen
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