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An initial-value problem for an ordinary differential equation of the first order, is considered. It is supposed that the right-hand side of the equation is a continuous function defined on a set consisting of an open set and a part of its…

Classical Analysis and ODEs · Mathematics 2019-11-04 Vladimir V. Basov

We study initial boundary value problems for linear evolution partial differential equations (PDEs) posed on a time-dependent interval $l_1(t)<x<l_2(t)$, $0<t<T$, where $l_1(t)$ and $l_2(t)$ are given, real, differentiable functions, and…

Analysis of PDEs · Mathematics 2019-08-13 Athanasios S. Fokas , Beatrice Pelloni , Baoqiang Xia

In this paper, we are concerned with the initial-boundary value problem to the 2D magneto-micropolar system with zero angular viscosity in a smooth bounded domain. We prove that there exists a unique global strong solution of such a system…

Analysis of PDEs · Mathematics 2021-05-12 Shasha Wang , Wen-Qing Xu , Jitao Liu

While it is known that one can consider the Cauchy problem for evolution equations with Caputo derivatives, the situation for the initial value problems for the Riemann-Liouville derivatives is less understood. In this paper we propose new…

Analysis of PDEs · Mathematics 2022-06-28 Erkinjon Karimov , Michael Ruzhansky , Niyaz Tokmagambetov

The time-fractional diffusion equation is considered, where the time derivative is either of Caputo or Riemann-Liouville type. The solution of a general initial-boundary value problem with time-dependent boundary conditions over bounded and…

Analysis of PDEs · Mathematics 2023-01-04 M. Rodrigo

We consider the initial boundary value problem for free-evolution formulations of general relativity coupled to a parametrized family of coordinate conditions that includes both the moving puncture and harmonic gauges. We concentrate…

General Relativity and Quantum Cosmology · Physics 2018-01-03 David Hilditch , Milton Ruiz

The initial-boundary value problems for linear non-autonomous first order evolution equations are examined. Our assumptions provide a unified treatment which is applicable to many situations, where the domains of the operators may change…

Analysis of PDEs · Mathematics 2018-06-08 S. G. Pyatkov

We consider an initial mixed-boundary value problem for anisotropic fractional type degenerate parabolic equations posed in bounded domains. Namely, we consider that the boundary of the domain splits into two parts. In one of them, we…

Analysis of PDEs · Mathematics 2021-12-07 Gerardo Huaroto , Wladimir Neves

In this paper we consider an initial boundary value problem for a semilinear parabolic equation with absorption and nonlinear nonlocal Neumann boundary condition. We prove comparison principle, the existence theorem of a local solution and…

Analysis of PDEs · Mathematics 2016-02-17 Alexander Gladkov

Initial boundary value problem on a half-line for the Modified KdV equation is considered with the boundary conditions equal to zero at the origin and initial condition chosen arbitrary decreasing rapidly enough and this problem is plunged…

solv-int · Physics 2007-05-23 I. T. Habibullin

We consider a characteristic initial value problem for a class of symmetric hyperbolic systems with initial data given on two smooth null intersecting characteristic surfaces. We prove existence of solutions on a future neighborhood of the…

General Relativity and Quantum Cosmology · Physics 2016-03-29 Aurore Cabet , Piotr T. Chruściel , Roger Tagne Wafo

In the first of two papers, we study the initial boundary-value problem that underlies the theory of the Boltzmann equation for general non-spherical hard particles. In this work, for two congruent ellipses and for a large class of…

Classical Analysis and ODEs · Mathematics 2018-05-15 Mark Wilkinson

This paper deals with a class of initial-boundary value problems for nonlinear fourth order parabolic systems with time dependent coefficients in a bounded domain $\Omega \subset \mathbb{R}^N, N\geq 2$. Introducing suitable conditions on…

Analysis of PDEs · Mathematics 2022-09-28 M. Marras , S. Vernier-Piro

We study initial value problem for a system consisting of an integer order and distributed-order fractional differential equation describing forced oscillations of a body attached to a free end of a light viscoelastic rod. Explicit form of…

Mathematical Physics · Physics 2014-02-13 Teodor M. Atanackovic , Stevan Pilipovic , Dusan Zorica

In this paper we consider an initial boundary value problem for a semilinear parabolic equation with nonlinear nonlocal boundary condition. We prove comparison principle, the existence theorem of a local solution and study the problem of…

Analysis of PDEs · Mathematics 2014-12-17 Alexander Gladkov , Tatiana Kavitova

In this article we summarize what is known about the initial-boundary value problem for general relativity and discuss present problems related to it.

General Relativity and Quantum Cosmology · Physics 2011-05-25 Oscar Reula , Olivier Sarbach

We study a Neumann type initial-boundary value problem for strongly degenerate parabolic-hyperbolic equations under the nonlinearity-diffusivity condition. We suggest a notion of entropy solution for this problem and prove its uniqueness.…

Analysis of PDEs · Mathematics 2014-07-09 Yuxi Hu , Yachun Li

In this work, we study the initial boundary value problem for a non-strictly hyperbolic $2\times2$ system of equations in the quarter plane $x>0,t>0$ which is derived from Eulerian droplet model for air particle flow for velocity and volume…

Analysis of PDEs · Mathematics 2025-07-03 Kayyunnapara Divya Joseph

This note aims at providing a rather informal and hopefully accessible overview of the fairly long and technical work [4]. In that paper, the authors established new global-in-time existence results for admissible solutions of nonlinear…

Analysis of PDEs · Mathematics 2024-05-06 Laura V. Spinolo , Fabio Ancona , Andrea Marson

In this article we investigate the dynamics of the initial-boundary value problem for the nonlinear marine riser equation in the presence of time dependent boundary conditions at the top end and a time dependent coefficient of the nonlinear…

Analysis of PDEs · Mathematics 2017-06-07 Waleed S. Khedr