Results 21 to 30 of about 1,264,456 (207)

Smooth Solutions of systems of quasilinear parabolic equations [PDF]

open access: yesESAIM: Control, Optimisation and Calculus of Variations, 2002
Diagonal quasilinear parabolic systems arising in the context of stochastic differential games are considered: \[ \partial_t u^k- (a_{ij}(x,t)u^k_{x_j})_{x_i} = H^k(x,t,u,\nabla u) , \] where the Hamiltonians \(H^k\) have quadratic growth in \(\nabla u\). Uniform ellipticity of \(a_{ij}\) and special structure conditions \[ | H^k(x,t,u,p)| \leq C | p^k|
Bensoussan, Alain, Frehse, Jens
openaire   +2 more sources

Stability of solutions of quasilinear parabolic equations

open access: yesJournal of Mathematical Analysis and Applications, 2005
We bound the difference between solutions $u$ and $v$ of $u_t = aΔu+\Div_x f+h$ and $v_t = bΔv+\Div_x g+k$ with initial data $ϕ$ and $ ψ$, respectively, by $\Vert u(t,\cdot)-v(t,\cdot)\Vert_{L^p(E)}\le A_E(t)\Vert ϕ-ψ\Vert_{L^\infty(\R^n)}^{2ρ_p}+ B(t)(\Vert a-b\Vert_{\infty}+ \Vert \nabla_x\cdot f-\nabla_x\cdot g\Vert_{\infty}+ \Vert f_u-g_u\Vert_ ...
COCLITE, Giuseppe Maria, HOLDEN H.
openaire   +3 more sources

A Picone identity for variable exponent operators and applications

open access: yesAdvances in Nonlinear Analysis, 2019
In this work, we establish a new Picone identity for anisotropic quasilinear operators, such as the p(x)-Laplacian defined as div(|∇ u|p(x)−2 ∇ u).
Arora Rakesh   +2 more
doaj   +1 more source

On the Cauchy Problem of a Quasilinear Degenerate Parabolic Equation [PDF]

open access: yesDiscrete Dynamics in Nature and Society, 2009
By Oleinik′s line method, we study the existence and the uniqueness of the classical solution of the Cauchy problem for the following equation in [0, T] × R2: ∂xxu + u∂yu − ∂tu = f(⋅, u), provided that T is suitable small. Results of numerical experiments are reported to demonstrate that the strong solutions of the above equation may blow up in ...
Zongqi Liang, Huashui Zhan
openaire   +3 more sources

Large time behavior in a quasilinear parabolic-parabolic-elliptic attraction-repulsion chemotaxis system [PDF]

open access: yes, 2022
summary:This paper deals with a quasilinear parabolic-parabolic-elliptic attraction-repulsion chemotaxis system. Boundedness, stabilization and blow-up in this system of the fully parabolic and parabolic-elliptic-elliptic versions have already been ...
Chiyo, Yutaro   +2 more
core   +1 more source

Computing optimal control with a quasilinear parabolic partial differential equation [PDF]

open access: yesSurveys in Mathematics and its Applications, 2009
This paper presents the numerical solution of a constrained optimal control problem (COCP) for quasilinear parabolic equations. The COCP is converted to unconstrained optimization problem (UOCP) by applying the exterior penalty function method. Necessary
M. H. Farag
doaj  

On the weak solution of a three-point boundary value problem for a class of parabolic equations with energy specification

open access: yesAbstract and Applied Analysis, 2003
This paper deals with weak solution in weighted Sobolev spaces, of three-point boundary value problems which combine Dirichlet and integral conditions, for linear and quasilinear parabolic equations in a domain with curved lateral boundaries. We, firstly,
Abdelfatah Bouziani
doaj   +1 more source

The quasilinear parabolic kirchhoff equation

open access: yesOpen Mathematics, 2017
Abstract In this paper the existence of solution of a quasilinear generalized Kirchhoff equation with initial – boundary conditions of Dirichlet type will be studied using the Leray – Schauder principle.
openaire   +5 more sources

On maximal parabolic regularity for non-autonomous parabolic operators [PDF]

open access: yes, 2016
We consider linear inhomogeneous non-autonomous parabolic problems associated to sesquilinear forms, with discontinuous dependence of time. We show that for these problems, the property of maximal parabolic regularity can be extrapolated to time ...
ter Elst, A. F. M.   +9 more
core   +1 more source

Removable isolated singularities for solutions of quasilinear parabolic equations [PDF]

open access: yes, 2009
We have obtained the best possible conditions for removable singularity at the point for solutions of quasilinear parabolic equations of divergent ...
Nicolosi, F.   +2 more
core   +1 more source

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