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Motivated by recent results on the (possibly conditional) regularity for time-dependent hypoelliptic equations, we prove a parabolic version of the Poincar\'e inequality, and as a consequence, we deduce a version of the classical Moser…

Analysis of PDEs · Mathematics 2022-12-27 G. Citti , M. Mandredini , Y. Sire

We study the time-asymptotic behavior of linear hyperbolic systems under partial dissipation which is localized in suitable subsets of the domain. More precisely, we recover the classical decay rates of partially dissipative systems…

Analysis of PDEs · Mathematics 2022-06-02 Timothée Crin-Barat , Nicola De Nitti , Enrique Zuazua

In this contribution we prove the existence of weak solutions to degenerate parabolic systems arising from the coupled moisture movement, transport of dissolved species and heat transfer through partially saturated porous materials.…

Analysis of PDEs · Mathematics 2017-01-03 Michal Beneš , Lukáš Krupička

We study the stability of one-dimensional linear hyperbolic systems with non-symmetric relaxation. Introducing a new frequency-dependent Kalman stability condition, we prove an abstract decay result underpinning a form of inhomogeneous…

Analysis of PDEs · Mathematics 2025-03-04 Timothée Crin-Barat , Lorenzo Liverani , Ling-Yun Shou , Enrique Zuazua

In this paper we will study the Cauchy problem for strictly hyperbolic operators with low regularity coefficients in any space dimension $N\geq1$. We will suppose the coefficients to be log-Zygmund continuous in time and log-Lipschitz…

Analysis of PDEs · Mathematics 2013-09-19 Ferruccio Colombini , Daniele Del Santo , Francesco Fanelli , Guy Métivier

We study the Fokker-Planck equation derived in the large system limit of the Markovian process describing the dynamics of quantitative traits. The Fokker-Planck equation is posed on a bounded domain and its transport and diffusion…

Analysis of PDEs · Mathematics 2018-08-01 Katarina Bodova , Jan Haskovec , Peter Markowich

We propose in this paper a proximal and contraction method for solving a convex mixed variational inequality problem in a real Hilbert space. To accelerate the convergence of our proposed method, we incorporate an inertial extrapolation…

Optimization and Control · Mathematics 2025-11-25 Chidi Elijah Nwakpa , Austine Efut Ofem , Kalu Okam Okorie , Chinedu Izuchukwu , Chibueze Christian Okeke

We present a highly efficient lattice Boltzmann (LB) kinetic model for thermal liquid-vapor system. Three key components are as beow: (i) a discrete velocity model by Kataoka \emph{et al.} [Phys. Rev. E \textbf{69}, 035701(R)(2004)]; (ii) a…

Soft Condensed Matter · Physics 2014-03-18 Yanbiao Gan , Aiguo Xu , Guangcai Zhang , Junqi Wang , Xijun Yu , Yang Yang

We present a new deterministic approach for the solution of the Boltzmann kinetic equation based on nodal discontinuous Galerkin (DG) discretizations in velocity space. In the new approach the collision operator has the form of a bilinear…

Computational Physics · Physics 2018-01-19 Alexander Alekseenko , Eswar Josyula

We establish improved hypoelliptic estimates on the solutions of kinetic transport equations, using a suitable decomposition of the phase space. Our main result shows that the relative compactness in all variables of a bounded family…

Analysis of PDEs · Mathematics 2012-06-29 Diogo Arsénio , Laure Saint-Raymond

In this paper we prove global existence of weak solutions, their regularization, and relaxation for large data for a broad class of Fokker-Planck-Alignment models which appear in collective dynamics. The main feature of these results, as…

Analysis of PDEs · Mathematics 2026-02-19 R. Shvydkoy

A quadratic optimal transport metric on the set of probability measure over $\R^2$ is introduced. The quadratic cost is given by the euclidean norm on $\R^2$ associated to some well chosen symmetric positive matrix, which makes the metric…

Analysis of PDEs · Mathematics 2021-02-23 Samir Salem

This paper studies the one dimensional Navier-Stokes-Fourier-Korteweg system of equations describing the evolution of a heat-conducting compressible fluid that exhibits viscosity and capillarity. The main goal of the present analysis is to…

Analysis of PDEs · Mathematics 2023-08-01 Ramón G. Plaza , José M. Valdovinos

In this paper we continue the formal analysis of the long-time asymptotics of the homoenergetic solutions for the Boltzmann equation that we began in [18]. They have the form $f\left( x,v,t\right) =g\left(v-L\left( t\right) x,t\right) $…

Mathematical Physics · Physics 2020-08-26 Richard D. James , Alessia Nota , Juan J. L. Velázquez

We study long time behavior of some nonlinear discrete velocity kinetic equations in the one and three dimensions with periodic boundary conditions. We prove the exponential time decay of solutions towards the global equilibrium in the…

Analysis of PDEs · Mathematics 2025-08-06 Gayrat Toshpulatov

This paper presents a dissipativeness analysis of a quadrature method of moments (called HyQMOM) for the one-dimensional BGK equation. The method has exhibited its good performance in numerous applications. However, its mathematical…

Numerical Analysis · Mathematics 2024-06-21 Ruixi Zhang , Yihong Chen , Qian Huang , Wen-An Yong

In this paper we present a formal analysis of the long-time asymptotics of a particular class of solutions of the Boltzmann equation, known as homoenergetic solutions, which have the form $f\left( x,v,t\right)=g\left( v-L\left( t\right)…

Mathematical Physics · Physics 2019-03-27 Richard D. James , Alessia Nota , Juan J. L. Velázquez

This paper studies the dissipative structure of the system of equations that describes the motion of a compressible, isothermal, viscous-capillar fluid of Korteweg type in one space dimension. It is shown that the system satisfies the…

Analysis of PDEs · Mathematics 2022-01-06 Ramón G. Plaza , José Manuel Valdovinos

The algorithm for Dissipative Particle Dynamics (DPD), as modified by Espagnol and Warren, is used as a starting point for proving an H-theorem for the free energy and deriving hydrodynamic equations. Equilibrium and transport properties of…

Statistical Mechanics · Physics 2009-10-30 C. A. Marsh , G. Backx , M. H. Ernst

In this paper, we study parabolic equations in divergence form with coefficients that are singular degenerate as some Muckenhoupt weight functions in one spatial variable. Under certain conditions, weighted reverse H\"{o}lder's inequalities…

Analysis of PDEs · Mathematics 2018-11-16 Hongjie Dong , Tuoc Phan