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We study bounded ancient solutions of the Navier-Stokes equations. These are the solutions which are defined for all past time. In two space dimensions we prove that such solutions are either constant or functions of time only, depending on…

偏微分方程分析 · 数学 2007-09-25 G. Koch , N. Nadirashvili , G. Seregin , V. Sverak

We construct time almost-periodic solutions (global in time) with finite regularity to the incompressible Euler equations on the torus $\T^d$, with $d=3$ and $d\in\N$ even.

偏微分方程分析 · 数学 2023-12-19 Luca Franzoi , Riccardo Montalto

Time-periodic solutions to the linearized Navier-Stokes system in the $n$-dimensional whole-space are investigated. For time-periodic data in $L^q$-spaces, maximal regularity and corresponding a priori estimates for the associated…

偏微分方程分析 · 数学 2015-06-17 Mads Kyed

We show there exists a nontrivial $H^1_0$ solution to the steady Stokes equation on the 2D exterior domain in the hyperbolic plane. Hence we show there is no Stokes paradox in the hyperbolic setting. We also show the existence of a…

偏微分方程分析 · 数学 2017-08-18 Chi Hin Chan , Magdalena Czubak

We prove sharp two-sided estimates of the fundamental solution to the fractional Kolmogorov equation in $\mathbb{R}\times \mathbb{R}$ using Fourier methods. Additionally, we provide an explicit form of the fundamental solution in case of…

偏微分方程分析 · 数学 2024-11-04 Florian Grube

A stochastic differential equation with coefficients defined in a scale of Hilbert spaces is considered. The existence, uniqueness and path-continuity of infinite-time solutions is proved by an extension of the Ovsyannikov method. This…

泛函分析 · 数学 2021-10-26 Georgy Chargaziya , Alexei Daletskii

In this paper we describe a method to derive classical solutions of the Navier-Stokes equations for non-stationary initial value problems in domain R^n (n = 2, 3 or higher). A new closed-form analytic solution of the incompressible…

数学物理 · 物理学 2015-09-28 R. K. Michael Thambynayagam

We study the set of T-periodic solutions of a class of T-periodically perturbed Differential-Algebraic Equations with separated variables. Under suitable hypotheses, these equations are equivalent to separated variables ODEs on a manifold.…

经典分析与常微分方程 · 数学 2011-12-23 Luca Bisconti

A mechanical model and finite element method for the simultaneous solution of Stokes and incompressible Navier-Stokes flows on multiple curved surfaces over a bulk domain are proposed. The two-dimensional surfaces are defined implicitly by…

计算工程、金融与科学 · 计算机科学 2025-10-09 Michael Wolfgang Kaiser , Thomas-Peter Fries

In this paper, we obtain a result on the existence and uniqueness of global spherically symmetric classical solutions to the compressible isentropic Navier-Stokes equations with vacuum in a bounded domain or exterior domain {\Omega} of Rn(n…

偏微分方程分析 · 数学 2012-05-01 Shijin Ding , Huanyao Wen , Lei Yao , Changjiang Zhu

The paper offers the method of discovering of some class of solutions for the nonlinear Schroedinger equation. An algorithm of constructive solving of the Cauchy periodic problem with a finite-gap initial condition was also obtained.

可精确求解与可积系统 · 物理学 2014-01-20 Vladimir Kotlyarov , Alexander Its

Time-periodic solutions to the Navier-Stokes equations that govern the flow of a viscous liquid past a three-dimensional body moving with a time-periodic velocity are investigated. The net motion of the body over a full time-period is…

偏微分方程分析 · 数学 2016-10-03 Giovanni P. Galdi , Mads Kyed

We study the existence of a strong solution to the initial value problem for the incompressible Navier-Stokes equations in the whole space. Our investigation shows that a ``suitable'' weak solution to the problem becomes a strong one…

偏微分方程分析 · 数学 2025-04-30 Xiangsheng Xu

We investigate the initial-boundary value problem for the Stokes system in the half-space, within the framework of weighted Lebesgue spaces. Introducing a new weight function defined via a product of powers of distances from fixed points,…

偏微分方程分析 · 数学 2025-10-14 Angelica Pia Di Feola , Vittorio Pane

A stochastic differential equation with coefficients defined in a scale of Hilbert spaces is considered. The existence and uniqueness of finite time solutions is proved by an extension of the Ovsyannikov method. This result is applied to a…

泛函分析 · 数学 2018-05-15 Alexei Daletskii

The purpose of this paper is to bring to light a method through which the global in time existence for arbitrary large in $H^1$ initial data of a strong solution to 3D periodic Navier-Stokes equations follows. The method consists of…

综合数学 · 数学 2020-04-23 Abdelkerim Chaabani

First, the solution uniqueness and existence of a stationary anisotropic (linear) Stokes system with constant viscosity coefficients in a compressible framework on $n$-dimensional flat torus are analysed in a range of periodic Sobolev…

偏微分方程分析 · 数学 2023-01-18 Sergey E. Mikhailov

We study the existence of a strong solution to the initial value problem for the Nernst-Planck-Navier-Stokes (NPNS) system in $\mathbb{R}^N, N\geq 3$. The system describes the electrodiffusion of ions in a viscous Newtonian fluid. A strong…

偏微分方程分析 · 数学 2026-01-13 Xiangsheng Xu

We construct the fundamental solution of second order parabolic equations in non-divergence form under the assumption that the coefficients are of Dini mean oscillation in the spatial variables. We also prove that the fundamental solution…

偏微分方程分析 · 数学 2023-09-07 Hongjie Dong , Seick Kim , Sungjin Lee

In this paper, an integrated theory of the probe and singular sources methods for an inverse obstacle problem governed by the Stokes system in a bounded domain is developed. The main results consist of: the probe method for the Stokes…

偏微分方程分析 · 数学 2025-08-25 Masaru Ikehata