Results 21 to 30 of about 47,836 (284)

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

Local Gradient Estimates for Degenerate Elliptic Equations [PDF]

open access: yesAdvanced Nonlinear Studies, 2016
Abstract This paper is focused on the local interior W 1 , ∞
Hoang, Luan, Nguyen, Truyen, Phan, Tuoc
openaire   +2 more sources

On the unique solvability of a nonlocal boundary value problem with the poincaré condition [PDF]

open access: yesE3S Web of Conferences, 2023
As is known, it is customary in the literature to divide degenerate equations of mixed type into equations of the first and second kind. In the case of an equation of the second kind, in contrast to the first, the degeneracy line is simultaneously the ...
Abdullaev A. A.   +2 more
doaj   +1 more source

Singularly Perturbed Elliptic Dirichlet Problem with a Multiple Root of the Degenerate Equation

open access: yesМоделирование и анализ информационных систем, 2016
A singularly perturbed elliptic problem with Dirichlet boundary conditions is considered in the case of multiple roots of the degenerate equation. A complete asymptotic expansion of the solution is constructed and justified. It is qualitatively different
V. F. Butuzov, V. A. Beloshapko
doaj   +1 more source

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

A semilinear problem with a W^{1,1}_0 solution

open access: yes, 2012
We study a degenerate elliptic equation, proving the existence of a W^{1,1}_0 distributional ...
Boccardo, Lucio   +2 more
core   +2 more sources

Classification of integrable Weingarten surfaces possessing an sl(2)-valued zero curvature representation

open access: yes, 2010
In this paper we classify Weingarten surfaces integrable in the sense of soliton theory. The criterion is that the associated Gauss equation possesses an sl(2)-valued zero curvature representation with a nonremovable parameter. Under certain restrictions
Baran H   +26 more
core   +1 more source

Mathematical modeling and computation of a dam–reservoir system balancing environmental management and hydropower generation

open access: yesEnergy Reports, 2020
We propose a simple but non-trivial mathematical model of a dam–reservoir system balancing between the downstream environmental management and hydropower production.
Hidekazu Yoshioka
doaj   +1 more source

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