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This article is concerned with the well-posedness of the "filtering equations", due to Zakai and Kushner-Stratonovich, arising in nonlinear stochastic filtering. In general situations, notably in correlated diffusion models and when signal…

概率论 · 数学 2026-02-02 Fabio Bugini , Peter K. Friz , Khoa Lê , Huilin Zhang

The primary goal of this paper is to develop robust methods to handle two ubiquitous features appearing in the modeling of geophysical flows: (i) the anisotropy of the viscous stress tensor, (ii) stratification effects. We focus on the…

偏微分方程分析 · 数学 2020-11-05 Edoardo Bocchi , Francesco Fanelli , Christophe Prange

In this article we consider the 2D Navier-Stokes equations with variable viscosity depending on the vertical position. As our main result we establish linear enhanced dissipation near the non-affine stationary states replacing Couette flow.…

偏微分方程分析 · 数学 2021-10-22 Xian Liao , Christian Zillinger

This paper will be replaced later by a revised version.

经典分析与常微分方程 · 数学 2007-05-23 Y. Gaspar

The mild-slope equation and its various modifications aim to model, with varying degrees of success, linear water wave propagation over sloping or undulating seabed topography. However, despite multiple modifications and attempted…

大气与海洋物理 · 物理学 2025-06-26 Chengnian Xiao

A linear stochastic vector advection equation is considered. The equation may model a passive magnetic field in a random fluid. The driving velocity field is a integrable to a certain power and the noise is infinite dimensional. We prove…

偏微分方程分析 · 数学 2017-05-02 Franco Flandoli , Christian Olivera

The global well-posedness for the incompressible Navier-Stokes-Vlasov equations in two spatial dimensions is established by a priori estimates, the characteristic method and the semigroup analysis.

偏微分方程分析 · 数学 2012-10-12 Cheng Yu

We consider the 2d $\beta$-plane stochastic Navier-Stokes equations in a periodic channel. We prove the well-posedness and existence of the stationary measure, as well as certain regularity estimates concerning the support of the stationary…

偏微分方程分析 · 数学 2024-10-25 Yuri Cacchio' , Amirali Hannani , Gigliola Staffilani

In this paper, by means of the Riesz basis approach, we study the stability of a weakly damped system of two second order evolution equations coupled through the velocities. If the fractional order damping becomes viscous and the waves…

偏微分方程分析 · 数学 2018-08-31 Farah Abdallah , Yacine Chitour , Mouhammad Ghader , Ali Wehbe

We introduce stabilized spline collocation schemes for the numerical solution of nonlinear, hyperbolic conservation laws. A nonlinear, residual-based viscosity stabilization is combined with a projection stabilization-inspired linear…

数值分析 · 数学 2023-07-18 Ryan M. Aronson , John A. Evans

We prove the local-in-time well-posedness for the solution of the compressible Euler equations in $3$-D, for the Cauchy data of the velocity, density and vorticity $(v,\varrho, \fw) \in H^s\times H^s\times H^{s'}$, $2<s'<s$. The classical…

偏微分方程分析 · 数学 2019-11-13 Qian Wang

This paper is devoted to the well-posedness of the inhomogeneous nonlinear wave equations. By combining Strichartz estimates with the contraction mapping principle, we establish local and global well-posedness in the function spaces…

偏微分方程分析 · 数学 2026-04-07 Jiang Boyu Shen Jiawei , Li Kexue

In this paper, we study the global well-posedness of the 2D compressible Navier-Stokes equations with large initial data and vacuum. It is proved that if the shear viscosity $\mu$ is a positive constant and the bulk viscosity $\l$ is the…

偏微分方程分析 · 数学 2012-02-08 Quansen Jiu , Yi Wang , Zhouping Xin

This article is devoted to the study of local well-posedness for deep water waves with constant vorticity in two space dimensions on the real line. The water waves can be paralinearized and written as a quasilinear dispersive system of…

偏微分方程分析 · 数学 2024-10-16 Lizhe Wan

We address the local well-posedness of the hydrostatic Navier-Stokes equations. These equations, sometimes called reduced Navier-Stokes/Prandtl, appear as a formal limit of the Navier-Stokes system in thin domains, under certain constraints…

偏微分方程分析 · 数学 2018-04-13 David Gerard-Varet , Nader Masmoudi , Vlad Vicol

Viscous contact problems describe the time evolution of fluid flows in contact with a surface from which they can detach and reattach. These problems are of particular importance in glaciology, where they arise in the study of grounding…

数值分析 · 数学 2022-04-06 Gonzalo G. de Diego , Patrick E. Farrell , Ian J. Hewitt

We are interested in viscous scalar conservation laws with a white-in-time but spatially correlated stochastic forcing. The equation is assumed to be one-dimensional and periodic in the space variable, and its flux function to be locally…

偏微分方程分析 · 数学 2020-04-27 Sofiane Martel , Julien Reygner

We prove the well-posedness of some non-linear stochastic differential equations in the sense of McKean-Vlasov driven by non-degenerate symmetric $\alpha$-stable L\'evy processes with values in $R^d$ under some mild H{\"o}lder regularity…

偏微分方程分析 · 数学 2019-10-15 Noufel Frikha , Valentin Konakov , Stéphane Menozzi

In this paper, we consider the solvability of the two-dimensional stationary Navier--Stokes equations on the whole plane $\mathbb{R}^2$. In [6], it was proved that the stationary Navier--Stokes equations on $\mathbb{R}^2$ is ill-posed for…

偏微分方程分析 · 数学 2024-07-09 Mikihiro Fujii , Hiroyuki Tsurumi

We are concerned with the question of well-posedness of stochastic three dimensional incompressible Euler equations. In particular, we introduce a novel class of dissipative solutions and show that (i) existence; (ii) weak--strong…

概率论 · 数学 2020-09-23 Martina Hofmanová , Rongchan Zhu , Xiangchan Zhu