Results 31 to 40 of about 419,875 (391)

Convergence for Degenerate Parabolic Equations

open access: yesJournal of Differential Equations, 1999
AbstractWe prove that any bounded global solution to a degenerate parabolic problem in one spatial dimension converges to a unique stationary state.
Frédérique Simondon, Eduard Feireisl
openaire   +2 more sources

Degenerate parabolic equations appearing in atmospheric dispersion of pollutants

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2016
Linear and nonlinear degenerate abstract parabolic equations with variable coefficients are studied. Here the equation and boundary conditions are degenerated on all boundary and contain some parameters.
Veli Shakhmurov, Aida Sahmurova
doaj   +1 more source

Determination of the right-hand side term in the degenerate parabolic equation with two variables

open access: yesJournal of Physics: Conference Series, 2019
We find two type conditions sufficient for unique solvability of inverse problem of source determination in degenerate parabolic equation with two independent variables.
V. Kamynin, A. Kostin
semanticscholar   +1 more source

A new kind of the solution of degenerate parabolic equation with unbounded convection term

open access: yesOpen Mathematics, 2015
A new kind of entropy solution of Cauchy problem of the strong degenerate parabolic ...
Huashui Zhan
doaj   +1 more source

Pullback Attractors for a Nonautonomous Retarded Degenerate Parabolic Equation

open access: yesDiscrete Dynamics in Nature and Society, 2020
This paper is devoted to a nonautonomous retarded degenerate parabolic equation. We first show the existence and uniqueness of a weak solution for the equation by using the standard Galerkin method.
Fahe Miao, Hui Liu, Jie Xin
doaj   +1 more source

Continuous maximal regularity on singular manifolds and its applications [PDF]

open access: yes, 2015
In this article, we set up the continuous maximal regularity theory for a class of linear differential operators on manifolds with singularities. These operators exhibit degenerate or singular behaviors while approaching the singular ends.
Shao, Yuanzhen
core   +1 more source

Fundamental solutions for degenerate parabolic equations [PDF]

open access: yesActa Mathematica, 1974
This chapter explains the construction of a candidate for a fundamental solution and the existence, smoothness, and certain bounds for a fundamental solution Γ. The underlying assumptions were that ( a ij , ( x )) is uniformly positive definite and a ij , b i are bounded and uniformly Holder continuous. The chapter presents a proof of how if a ij ,
openaire   +3 more sources

The cost of controlling strongly degenerate parabolic equations [PDF]

open access: yesESAIM: Control, Optimisation and Calculus of Variations, 2020
We consider the typical one-dimensional strongly degenerate parabolic operator Pu = ut − (xαux)x with 0 < x < ℓ and α ∈ (0, 2), controlled either by a boundary control acting at x = ℓ, or by a locally distributed control. Our main goal is to study the dependence of the so-called controllability cost needed to drive an initial condition to rest ...
P. Cannarsa   +2 more
openaire   +8 more sources

A quantitative strong parabolic maximum principle and application to a taxis-type migration–consumption model involving signal-dependent degenerate diffusion [PDF]

open access: yesAnnales de l'Institut Henri Poincare. Analyse non linéar, 2022
The taxis-type migration-consumption model accounting for signal-dependent motilities, as given by ( u t = ∆ ( ) is considered for suitably smooth functions φ : [0 , ∞ ) → R which are such that φ > 0 on (0 , ∞ ), but that in addition φ (0) = 0 with φ ...
M. Winkler
semanticscholar   +1 more source

Asymptotic expansions for degenerate parabolic equations

open access: yesComptes Rendus. Mathématique, 2014
Abstract We prove asymptotic convergence results for some analytical expansions of solutions to degenerate PDEs with applications to financial mathematics. In particular, we combine short-time and global-in-space error estimates, previously obtained in the uniformly parabolic case, with some a priori bounds on “short cylinders”, and we achieve short ...
PASCUCCI, ANDREA   +2 more
openaire   +3 more sources

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