Results 51 to 60 of about 420,318 (376)

Large time behavior for some nonlinear degenerate parabolic equations

open access: yes, 2013
We study the asymptotic behavior of Lipschitz continuous solutions of nonlinear degenerate parabolic equations in the periodic setting. Our results apply to a large class of Hamilton-Jacobi-Bellman equations.
Ley, Olivier, Nguyen, Vinh Duc
core   +2 more sources

Interior degenerate/singular parabolic equations in nondivergence form: well-posedness and Carleman estimates [PDF]

open access: yes, 2015
We consider non smooth general degenerate/singular parabolic equations in non divergence form with degeneracy and singularity occurring in the interior of the spatial domain, in presence of Dirichlet or Neumann boundary conditions.
Alabau-Boussouira   +30 more
core   +2 more sources

On the convergence of a class of degenerate parabolic equations

open access: yesJournal de Mathématiques Pures et Appliquées, 1998
Abstract In this paper we study the convergence of the Cauchy-Dirichlet problems for a sequence of parabolic operators P h = ∂ ∂t − div (a h (x,t) · D) , where the matrices of the coefficient ah(x,t) verify the following degenerate elliptic condition: λ h (x)|ζ| 2 ≤ (a h (x,t)⋯ζ,ζ)≤Lλ h (x)|ζ|
PARONETTO, FABIO, F. Serra Cassano
openaire   +4 more sources

Optimal Control Problems of a Class of Nonlinear Degenerate Parabolic Equations

open access: yesMathematics
The optimal control problems of degenerate parabolic equations have many applications in economics, physics, climatology, and so on. Motivated by the applications, we consider the optimal control problems of a class of nonlinear degenerate parabolic ...
Yang Na   +3 more
doaj   +1 more source

Carleman estimates for a stochastic degenerate parabolic equation and applications to null controllability and an inverse random source problem [PDF]

open access: yes, 2019
In this paper, we establish two Carleman estimates for a stochastic degenerate parabolic equation. The first one is for the backward stochastic degenerate parabolic equation with singular weight function. Combining this Carleman estimate and an approximate argument, we prove the null controllability of the forward stochastic degenerate parabolic ...
arxiv   +1 more source

Singularly perturbed periodic parabolic equations with alternating boundary layer type solutions

open access: yesAbstract and Applied Analysis, 2006
We consider a class of singularly perturbed parabolic equations for which the degenerate equations obtained by setting the small parameter equal to zero are algebraic equations that have several roots.
Adelaida B. Vasil'eva   +1 more
doaj   +2 more sources

Igusa-type functions associated to finite formed spaces and their functional equations [PDF]

open access: yes, 2008
We study symmetries enjoyed by the polynomials enumerating non-degenerate flags in finite vector spaces, equipped with a non-degenerate alternating bilinear, hermitian or quadratic form.
Klopsch, Benjamin, Voll, Christopher
core   +4 more sources

Dissipation enhancement for a degenerated parabolic equation

open access: yesCommunications in Mathematical Sciences, 2023
22 ...
Feng, Yu, Hu, Bingyang, Xu, Xiaoqian
openaire   +2 more sources

A new method for large time behavior of degenerate viscous Hamilton--Jacobi equations with convex Hamiltonians [PDF]

open access: yes, 2015
We investigate large-time asymptotics for viscous Hamilton--Jacobi equations with possibly degenerate diffusion terms. We establish new results on the convergence, which are the first general ones concerning equations which are neither uniformly ...
Barles   +24 more
core   +1 more source

A strongly degenerate parabolic aggregation equation [PDF]

open access: yesCommunications in Mathematical Sciences, 2011
This paper is concerned with a strongly degenerate convection-diffusion equation in one space dimension whose convective flux involves a non-linear function of the total mass to one side of the given position. This equation can be understood as a model of aggregation of the individuals of a population with the solution representing their local density.
Betancourt, F.   +2 more
openaire   +5 more sources

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