Results 31 to 40 of about 420,318 (376)

Regularity for a class of quasilinear degenerate parabolic equations in the Heisenberg group [PDF]

open access: yes, 2020
We extend to the parabolic setting some of the ideas originated with Xiao Zhong's proof in \cite{Zhong} of the H\"older regularity of $p-$harmonic functions in the Heisenberg group $\Hn$. Given a number $p\ge 2$, in this paper we establish the $C^{\infty}
L. Capogna, G. Citti, N. Garofalo
semanticscholar   +1 more source

Nonlinear degenerate parabolic equations with irregular initial data [PDF]

open access: yesRendiconti di Matematica e delle Sue Applicazioni, 2021
Existence and regularity results for a class of degenerate nonlinear parabolic equations are proved for irregular initial data like the Dirac mass. Indeed the diffusion operator may degenerate as the solution diverges and may depend on space and time ...
Maria Michaela Porzio
doaj  

Direct and inverse source problems for degenerate parabolic equations

open access: yesJournal of Inverse and Ill-Posed Problems, 2020
Degenerate parabolic partial differential equations (PDEs) with vanishing or unbounded leading coefficient make the PDE non-uniformly parabolic, and new theories need to be developed in the context of practical applications of such rather unstudied ...
M.S Hussein   +3 more
semanticscholar   +1 more source

The structure of the singular set in the thin obstacle problem for degenerate parabolic equations [PDF]

open access: yesCalculus of Variations and Partial Differential Equations, 2019
We study the singular set in the thin obstacle problem for degenerate parabolic equations with weight |y|a\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage ...
Agnid Banerjee   +3 more
semanticscholar   +1 more source

Existence and blow-up of solutions for finitely degenerate semilinear parabolic equations with singular potentials

open access: yesCommunications in Analysis and Mechanics, 2023
In this article, we investigate the initial-boundary value problem for a class of finitely degenerate semilinear parabolic equations with singular potential term.
Huiyang Xu
semanticscholar   +1 more source

Wellposedness of a nonlocal nonlinear diffusion equation of image processing [PDF]

open access: yes, 2016
Existence and uniqueness are established for a degenerate regularization of the well-known Perona-Malik equation proposed by the first author for non-smooth initial data.
Guidotti, Patrick, Shao, Yuanzhen
core   +2 more sources

Convergence of Inverse Volatility Problem Based on Degenerate Parabolic Equation

open access: yesMathematics, 2022
Based on the theoretical framework of the Black–Scholes model, the convergence of the inverse volatility problem based on the degenerate parabolic equation is studied.
Yilihamujiang Yimamu, Zuicha Deng
doaj   +1 more source

Regularization of outflow problems in unsaturated porous media with dry regions [PDF]

open access: yes, 2007
We study a porous medium with saturated, unsaturated, and dry regions, described by Richards' equation for the saturation s and the pressure p. Due to a degenerate permeability coefficient k(x,s) and a degenerate capillary pressure function pc(x,s), the ...
Schweizer, Ben
core   +1 more source

Carleman inequality for a class of super strong degenerate parabolic operators and applications

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2023
In this paper, we present a new Carleman estimate for the adjoint equations associated to a class of super strong degenerate parabolic linear problems. Our approach considers a standard geometric imposition on the control domain, which can not be removed
Bruno Sérgio Araújo   +2 more
doaj   +1 more source

Second order mean field games with degenerate diffusion and local coupling [PDF]

open access: yes, 2014
We analyze a (possibly degenerate) second order mean field games system of partial differential equations. The distinguishing features of the model considered are (1) that it is not uniformly parabolic, including the first order case as a possibility ...
Cardaliaguet, Pierre   +3 more
core   +5 more sources

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