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The Approximate Solution of 2D Dirichlet Problem in Doubly Connected Domains [PDF]

open access: goldAdvances in Mathematical Physics, 2018
We propose a new method for constructing an approximate solution of the two-dimensional Laplace equation in an arbitrary doubly connected domain with smooth boundaries for Dirichlet boundary conditions.
Atallah El-shenawy, Elena A. Shirokova
doaj   +2 more sources

On Green’s Function of the Dirichlet Problem for the Polyharmonic Equation in the Ball

open access: yesAxioms, 2023
The paper gives an explicit representation of the Green’s function of the Dirichlet boundary value problem for the polyharmonic equation in the unit ball. The solution of the homogeneous Dirichlet problem is found.
Valery Karachik
doaj   +1 more source

Higher order Nevanlinna functions and the inverse three spectra problem [PDF]

open access: yesOpuscula Mathematica, 2016
The three spectra problem of recovering the Sturm-Liouville equation by the spectrum of the Dirichlet-Dirichlet boundary value problem on \([0,a]\), the Dirichlet-Dirichlet problem on \([0,a/2]\) and the Neumann-Dirichlet problem on \([a/2,a]\) is ...
Olga Boyko   +2 more
doaj   +1 more source

Dirichlet Problem with L1(S) Boundary Values

open access: yesAxioms, 2022
Let D be a connected bounded domain in R2, S be its boundary, which is closed and C2-smooth. Consider the Dirichlet problem Δu=0inD,u|S=h, where h∈L1(S).
Alexander G. Ramm
doaj   +1 more source

Numerical Analysis of Fourier Finite Volume Element Method for Dirichlet Boundary Optimal Control Problems Governed by Elliptic PDEs on Complex Connected Domains

open access: yesMathematics, 2022
In this research, we investigate an optimal control problem governed by elliptic PDEs with Dirichlet boundary conditions on complex connected domains, which can be utilized to model the cooling process of concrete dam pouring.
Mengya Su, Liuqing Xie, Zhiyue Zhang
doaj   +1 more source

Dirichlet duality and the nonlinear Dirichlet problem [PDF]

open access: yesCommunications on Pure and Applied Mathematics, 2008
AbstractWe study the Dirichlet problem for fully nonlinear, degenerate elliptic equations of the form F(Hess u) = 0 on a smoothly bounded domain Ω ⋐ ℝn. In our approach the equation is replaced by a subset F ⊂ Sym2(ℝn) of the symmetric n × n matrices with ∂F ⊆ {F = 0}.
Harvey, F. Reese, Lawson, H. Blaine jun.
openaire   +3 more sources

The Dirichlet Casimir problem [PDF]

open access: yesNuclear Physics B, 2004
Casimir forces are conventionally computed by analyzing the effects of boundary conditions on a fluctuating quantum field. Although this analysis provides a clean and calculationally tractable idealization, it does not always accurately capture the characteristics of real materials, which cannot constrain the modes of the fluctuating field at all ...
Graham, N.   +5 more
openaire   +2 more sources

Recovering the shape of an equilateral quantum tree with the Dirichlet conditions at the pendant vertices [PDF]

open access: yesOpuscula Mathematica
We consider two spectral problems on an equilateral rooted tree with the standard (continuity and Kirchhoff's type) conditions at the interior vertices (except of the root if it is interior) and Dirichlet conditions at the pendant vertices (except of the
Anastasia Dudko   +2 more
doaj   +1 more source

On Ambarzumian type theorems for tree domains [PDF]

open access: yesOpuscula Mathematica, 2022
It is known that the spectrum of the spectral Sturm-Liouville problem on an equilateral tree with (generalized) Neumann's conditions at all vertices uniquely determines the potentials on the edges in the unperturbed case, i.e. case of the zero potentials
Vyacheslav Pivovarchik
doaj   +1 more source

Dirichlet and Neumann Boundary Value Problems for the Polyharmonic Equation in the Unit Ball

open access: yesMathematics, 2021
In the previous author’s works, a representation of the solution of the Dirichlet boundary value problem for the biharmonic equation in terms of Green’s function is found, and then it is shown that this representation for a ball can be written in the ...
Valery Karachik
doaj   +1 more source

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