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We study a parabolic initial-boundary-value problem for a system of two differential equations with two boundary conditions of different orders, the Dirichlet and Neumann ones. It occurs specifically in the heat-mass transfer theory. We…

Analysis of PDEs · Mathematics 2024-01-30 O. V. Diachenko , V. M. Los

The null-timelike initial-boundary value problem for a hyperbolic system of equations consists of the evolution of data given on an initial characteristic surface and on a timelike worldtube to produce a solution in the exterior of the…

General Relativity and Quantum Cosmology · Physics 2011-06-16 H-O. Kreiss , J. Winicour

We prove the well-posedness of the initial boundary value problem for the Einstein equations with sole boundary condition the requirement that the timelike boundary is totally geodesic. This provides the first well-posedness result for this…

Analysis of PDEs · Mathematics 2021-07-21 Grigorios Fournodavlos , Jacques Smulevici

We study the initial-boundary value problem of the stochastic Navier--Stokes equations in the half space. We prove the existence of weak solutions in the standard Besov space valued random processes when the initial data belong to the…

Analysis of PDEs · Mathematics 2020-12-04 Tongkeun Chang , Minsuk Yang

We study the boundary regularity properties and derive a priori pointwise supremum estimates of weak solutions and their derivatives in terms of suitable weighted $L^2$-norms for a class of degenerate parabolic equations that satisfy…

Analysis of PDEs · Mathematics 2017-02-09 Charles L. Epstein , Camelia A. Pop

We establish existence and uniqueness results for initial-boundary value problems for transport equations in one space dimension with nearly incompressible velocity fields, under the sole assumption that the fields are bounded. In the case…

Analysis of PDEs · Mathematics 2021-12-20 Simone Dovetta , Elio Marconi , Laura V. Spinolo

The coupled quasilinear Keller-Segel-Navier-Stokes system is considered under Neumann boundary conditions for $n$ and $c$ and no-slip boundary conditions for $u$ in three-dimensional bounded domains $\Omega\subseteq \mathbb{R}^3$ with…

Analysis of PDEs · Mathematics 2017-04-11 Jiashan Zheng

Motivated by the introduction of the Zakharov-Kuznetsov equation as a higher dimensional generalization of the Korteweg-de Vries equation, in this paper we introduce the modified Zakharov-Kuznetsov (mZK) equation as a 2-dimensional…

Analysis of PDEs · Mathematics 2026-05-29 Carlos E. Kenig , Nataša Pavlović , Gigliola Staffilani , Luisa Velasco

Initial-boundary value problems for the $n$-dimensional ($n$ is a natural number from the interval [2,7]) Kuramoto-Sivashinsky equation posed on smooth bounded domains in $\mathbb{R}^n$ were considered. The existence and uniqueness of…

Analysis of PDEs · Mathematics 2022-05-24 N. A. Larkin

We study existence and uniqueness of solutions to a class of nonlinear degenerate parabolic equations, in bounded domains. We show that there exists a unique solution which satisfies possibly inhomogeneous Dirichlet boundary conditions. To…

Analysis of PDEs · Mathematics 2014-12-08 Fabio Punzo , Marta Strani

The three-dimensional quasi-geostrophic equation is considered over a cylindrical domain with a multiply connected horizontal cross-section. Homogeneous Neumann boundary conditions, tantamount to homogeneous density fields, are imposed on…

Analysis of PDEs · Mathematics 2026-03-10 Qingshan Chen

The initial boundary value problems for compressible Navier-Stokes-Poisson is considered on a bounded domain in $\mathbb{R}^3$ in this paper. The global existence of smooth solutions near a given steady state for compressible…

Analysis of PDEs · Mathematics 2021-04-07 Hairong Liu , Hua Zhong

This paper concerns the initial-boundary value problem to 2D micropolar equations without angular viscosity in a smooth bounded domain. It is shown that such a system admits a unique and global weak solution. The main idea of this paper is…

Analysis of PDEs · Mathematics 2017-05-16 Jitao Liu , Shu Wang

In this paper, we consider initial-boundary value problem of viscoelastic wave equation with a delay term in the interior feedback. Namely, we study the following equation $$u_{tt}(x,t)-\Delta u(x,t)+\int_0^t g(t-s)\Delta u(x,s)ds +\mu_1…

Analysis of PDEs · Mathematics 2013-11-26 Qiuyi Dai , Zhifeng Yang

The three-dimensional equations of compressible magnetohydrodynamic isentropic flows are considered. An initial-boundary value problem is studied in a bounded domain with large data. The existence and large-time behavior of global weak…

Analysis of PDEs · Mathematics 2015-05-13 Xianpeng Hu , Dehua Wang

In this paper, we study the initial boundary value problem for the nonlinear wave equation with combined power-type nonlinearities with variable coefficients. The global behavior of the solutions with non-positive and sub-critical energy is…

Analysis of PDEs · Mathematics 2023-10-31 Milena Dimova , Natalia Kolkovska , Nikolai Kutev

A Lax-Oleinik type explicit formula for 1D scalar balance laws has been recently obtained for the pure initial value problem by Adimurthi et al. in [1]. In this article, by introducing a suitable boundary functional, we establish a…

Analysis of PDEs · Mathematics 2023-12-06 Manas R. Sahoo , Abhrojyoti Sen , Manish Singh

In present paper we study a boundary value problem for a mixed parabolic-hyperbolic type equation in a rectangular domain and prove the existence of unique solution of this problem. In theory of boundary value problems for second order…

Analysis of PDEs · Mathematics 2015-05-11 Djumaklych Amanov

We consider the unsteady problem for the general planar Broadwell model with four velocities in a rectangular spatial domain over a finite time interval. We impose a class of non-negative initial and Dirichlet boundary data that are bounded…

Analysis of PDEs · Mathematics 2025-06-09 Koudzo Togbévi Selom Sobah , Amah Séna d'Almeida

We establish the well-posedness of an initial-boundary value problem of mixed type for a stochastic nonlinear parabolic-hyperbolic equation on a space domain $\cO=\cO'\X\cO''$ where a Neumann boundary condition is imposed on…

Analysis of PDEs · Mathematics 2022-01-25 Hermano Frid , Yachun Li , Daniel Marroquin , João F. C. Nariyoshi , Zirong Zeng