Results 11 to 20 of about 115,619 (374)

Regularity and geometric character of solution of a degenerate parabolic equation

open access: yesBulletin of Mathematical Sciences, 2015
This work studies the regularity and the geometric significance of solution of the Cauchy problem for a degenerate parabolic equation $u_{t}=\Delta{}u^{m}$.
Pan, Jiaqing
core   +3 more sources

Gaussian bounds for degenerate parabolic equations

open access: bronzeJournal of Functional Analysis, 2008
AbstractLet A be a real symmetric, degenerate elliptic matrix whose degeneracy is controlled by a weight w in the A2 or QC class. We show that there is a heat kernel Wt(x,y) associated to the parabolic equation wut=divA∇u, and Wt satisfies classic Gaussian bounds:|Wt(x,y)|⩽C1tn/2exp(−C2|x−y|2t).
David Cruz-Uribe, Cristian Rios
openaire   +3 more sources

Degenerate semilinear parabolic equations [PDF]

open access: bronzeDifferential and Integral Equations, 1992
Andreas Stahel
openaire   +3 more sources

A Fredholm Transformation for the Rapid Stabilization of a Degenerate Parabolic Equation [PDF]

open access: yesSIAM Journal of Control and Optimization, 2020
This paper deals with the rapid stabilization of a degenerate parabolic equation with a right Dirich-let control. Our strategy consists in applying a backstepping strategy, which seeks to find an invertible transformation mapping the degenerate parabolic
L. Gagnon, P. Lissy, S. Marx
semanticscholar   +1 more source

Higher regularity for weak solutions to degenerate parabolic problems [PDF]

open access: yesCalculus of Variations and Partial Differential Equations, 2023
In this paper, we study two related features of the regularity of the weak solutions to the following strongly degenerate parabolic equation $$\begin{aligned} u_t-\textrm{div}\left( \left( \left| Du\right| -1\right) _+^{p-1}\frac{Du}{\left| Du\right ...
Andrea Gentile   +1 more
semanticscholar   +1 more source

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

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

open access: yesInverse Problems, 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.
Bin Wu, Qun Chen, Zewen Wang
semanticscholar   +1 more source

Saturated Fronts in Crowds Dynamics

open access: yesAdvanced Nonlinear Studies, 2021
We consider a degenerate scalar parabolic equation, in one spatial dimension, of flux-saturated type. The equation also contains a convective term. We study the existence and regularity of traveling-wave solutions; in particular we show that they can be ...
Campos Juan   +2 more
doaj   +1 more source

Existence and cost of boundary controls for a degenerate/singular parabolic equation [PDF]

open access: yesMathematical Control and Related Fields, 2020
In this paper, we consider the following degenerate/singular parabolic equation $$ u_t -(x^\alpha u_{x})_x - \frac{\mu}{x^{2-\alpha}} u =0, \qquad x\in (0,1), \ t \in (0,T), $$ where $0\leq \alpha
U. Biccari   +2 more
semanticscholar   +1 more source

Existence results for some nonlinear parabolic equations with degenerate coercivity and singular lower-order terms [PDF]

open access: yesMathematica Bohemica, 2023
In this paper, we study the existence results for some parabolic equations with degenerate coercivity, singular lower order term depending on the gradient, and positive initial data in $L^1$.
Rabah Mecheter, Fares Mokhtari
doaj   +1 more source

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