Results 31 to 40 of about 2,910,066 (190)

Parabolic by Shilov systems with variable coefficients

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2018
Because of the parabolic instability of the Shilov systems to change their coefficients, the definition parabolicity of Shilov for systems with time-dependent $t$ coefficients, unlike the definition parabolicity of Petrovsky, is formulated by imposing ...
V.A. Litovchenko
doaj   +1 more source

Entropy Production Rate of a One-Dimensional Alpha-Fractional Diffusion Process

open access: yesAxioms, 2016
In this paper, the one-dimensional α-fractional diffusion equation is revisited. This equation is a particular case of the time- and space-fractional diffusion equation with the quotient of the orders of the time- and space-fractional derivatives equal ...
Yuri Luchko
doaj   +1 more source

Gradient estimates and the fundamental solution for higher-order elliptic systems with lower-order terms

open access: yesAdvanced Nonlinear Studies, 2023
We establish the Caccioppoli inequality, a reverse Hölder inequality in the spirit of the classic estimate of Meyers, and construct the fundamental solution for linear elliptic differential equations of order 2m2m with certain lower order terms.
Barton Ariel E., Duffy Michael J.
doaj   +1 more source

Asymptotic Behavior for a Nonlocal Diffusion Equation in Domains with Holes [PDF]

open access: yes, 2011
The paper deals with the asymptotic behavior of solutions to a non-local diffusion equation, $u_t=J*u-u:=Lu$, in an exterior domain, $\Omega$, which excludes one or several holes, and with zero Dirichlet data on $\mathbb{R}^N\setminus\Omega$.
Cortazar, C.   +3 more
core   +2 more sources

LARGE-TIME ASYMPTOTIC OF THE SOLUTION TO THE DIFFUSION EQUATION AND ITS APPLICATION TO HOMOGENIZATION ESTIMATES

open access: yesРоссийский технологический журнал, 2017
The Cauchy problem for a linear second order parabolic equation with 1-periodic measurable coefficients is considered Rd, d ≥ 2. The problem models diffusion in a nonhomogeneous periodic medium. The appropriate diffusion operator A is self-adjoint in L2 (
S. E. Pastukhova, O. A. Evseeva
doaj   +1 more source

A General Study of Fundamental Solutions in Aniotropicthermoelastic Media with Mass Diffusion and Voids

open access: yesInternational Journal of Applied Mechanics and Engineering, 2020
The present paper deals with the study of a fundamental solution in transversely isotropic thermoelastic media with mass diffusion and voids. For this purpose, a two-dimensional general solution in transversely isotropic thermoelastic media with mass ...
Vijay Chawla, Deepmala Kamboj
doaj   +1 more source

Gaussian lower bound for the Neumann Green function of ageneral parabolic operator

open access: yes, 2015
Based on the fact that the Neumann Green function can be constructed as a perturbation of the fundamental solution by a single-layer potential, we establish gaussian two-sided bounds for the Neumann Green function for a general parabolic operator.
Choulli, Mourad, Kayser, Laurent
core   +1 more source

External Ellipsoidal Harmonics for the Dunkl-Laplacian

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2008
The paper introduces external ellipsoidal and external sphero-conal $h$-harmonics for the Dunkl-Laplacian. These external $h$-harmonics admit integral representations, and they are connected by a formula of Niven's type.
Hans Volkmer
doaj   +1 more source

Green’s Function of the Linearized Logarithmic Keller–Segel–Fisher/KPP System

open access: yesMathematical and Computational Applications, 2018
We consider a Keller–Segel type chemotaxis model with logarithmic sensitivity and logistic growth. The logarithmic singularity in the system is removed via the inverse Hopf–Cole transformation.
Jean Rugamba, Yanni Zeng
doaj   +1 more source

Cauchy problem for inhomogeneous parabolic Shilov equations

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2021
In this paper, we consider the Cauchy problem for parabolic Shilov equations with continuous bounded coefficients. In these equations, the inhomogeneities are continuous exponentially decreasing functions, which have a certain degree of smoothness by the
I.M. Dovzhytska
doaj   +1 more source

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