Results 21 to 30 of about 1,519 (300)

The Neumann problem for some degenerate elliptic equations [PDF]

open access: yes, 2006
summary:In the paper we study the equation $Lu=f$, where $L$ is a degenerate elliptic operator, with Neumann boundary condition in a bounded open set ${\Omega }$.
Cavalheiro, Albo Carlos
core   +1 more source

Higher order energy expansions for some singularly perturbed Neumann problems [PDF]

open access: yes, 2003
We consider the following singularly perturbed semilinear elliptic problem: \epsilon^{2} \Delta u - u + u^p=0 \ \ \mbox{in} \ \Omega, \quad u>0 \ \ \mbox{in} \ \ \Omega \quad \mbox{and} \ \frac{\partial u}{\partial \nu} =0 \ \mbox{on} \ \partial \
Winter, M   +5 more
core   +1 more source

On a viscous fourth-order parabolic equation with boundary degeneracy

open access: yesBoundary Value Problems, 2022
A viscous fourth-order parabolic equation with boundary degeneracy is studied. By using the variational method, the existence of a time-discrete fourth-order elliptic equation with homogeneous boundary conditions is solved.
Bo Liang   +4 more
doaj   +1 more source

Solution of the Basic Boundary Value Problems for a Degenerate Elliptic Equation by the Method of Potentials [PDF]

open access: yesУчёные записки Казанского университета: Серия Физико-математические науки, 2015
Fundamental solutions to a degenerate elliptic equation are found. Using these fundamental solutions, simple and double layer potentials are built.
R.M. Askhatov, R.N. Abaydullin
doaj  

A double inverse problem for Fredholm integro-differential equation of elliptic type

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2014
In this paper the double inverse problem for partial differential equations is considered. The method of studying the one value solvability of the double inverse problem for a Fredholm integro-differential equation of elliptic type with degenerate kernel
Tursun K Yuldashev
doaj   +1 more source

Regularity properties of degenerate convolution-elliptic equations [PDF]

open access: yes, 2016
The coercive properties of degenerate abstract convolution-elliptic equations are investigated. Here we find sufficient conditions that guarantee the separability of these problems in Lp spaces.
Shakhmurov, Veli B.   +4 more
core   +1 more source

On a class of degenerate elliptic equations [PDF]

open access: yesNagoya Mathematical Journal, 1974
We shall prove in Chapter I the hypoellipticity for a class of degenerate elliptic operators of higher order. Chapter II will be devoted to the consideration of the regularity at the boundary for the solutions of general boundary problems for the equations considered in Chapter I being restricted to the second order.
Hashimoto, Yoshiaki, Matsuzawa, Tadato
openaire   +2 more sources

BOUNDARY VALUE PROBLEM FOR A DEGENERATE ELLIPTIC EQUATION

open access: yes, 2019
The existence and uniqueness of the solution of a boundary value problem for a degenerate elliptic equation is ...
Shokirov, Asrorjon
core   +4 more sources

Solvability of nonlinear Dirichlet problem for a class of degenerate elliptic equations

open access: yesAbstract and Applied Analysis, 2004
We prove an existence result for solution to a class of nonlinear degenerate elliptic equation associated with a class of partial differential operators of the form Lu(x)=∑i,j=1nDj(aij(x)Diu(x)), with Dj=∂/∂xj, where aij:Ω→ℝ are functionssatisfying ...
Albo Carlos Cavalheiro
doaj   +1 more source

Homogenization of periodic elliptic degenerate PDEs with non-linear Neumann boundary condition

open access: yesPartial Differential Equations in Applied Mathematics, 2021
In this paper, a semi-linear elliptic partial differential equation (PDE) with non linear Neumann boundary condition and rapidly oscillating coefficients is homogenized.
Mohamed Marzougue, Ibrahima Sane
doaj   +1 more source

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