Results 31 to 40 of about 27,888 (166)

The numerical solution of forward and inverse Robin problems for Laplace’s equation

open access: yesBoundary Value Problems, 2019
The Robin boundary value problem for Laplace’s equation in the elliptic region (which is a forward problem) and its related inverse problem can be used to reconstruct Robin coefficients from measurements on a partial boundary (inverse problem).
Dan Qu, Yan-Bo Ma
doaj   +1 more source

The Partial Inverse Spectral and Nodal Problems for Sturm–Liouville Operators on a Star-Shaped Graph

open access: yesMathematics, 2022
We firstly prove the Horváth-type theorem for Sturm–Liouville operators on a star-shaped graph and then solve a new partial inverse nodal problem for this operator.
Xian-Biao Wei   +2 more
doaj   +1 more source

Multigrid Method for Solving Inverse Problems for Heat Equation

open access: yesMathematics, 2022
In this paper, the inverse problems for the boundary value and initial value in a heat equation are posed and solved. It is well known that those problems are ill posed.
Hassan K. Ibrahim Al-Mahdawi   +5 more
doaj   +1 more source

Inverse nodal and inverse spectral problems for discontinuous boundary value problems

open access: yesJournal of Mathematical Analysis and Applications, 2008
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Shieh, Chung-tsun, Yurko, V. A.
openaire   +3 more sources

Interior Elastic Scattering by a Non-Penetrable Partially Coated Obstacle and Its Shape Recovering

open access: yesMathematics, 2021
In this paper, the interior elastic direct and inverse scattering problem of time-harmonic waves for a non-penetrable partially coated obstacle placed in a homogeneous and isotropic medium is studied.
Angeliki Kaiafa, Vassilios Sevroglou
doaj   +1 more source

Inverse boundary-value problems: Elliptic equations

open access: yesJournal of Mathematical Analysis and Applications, 1970
AbstractInverse, or identification, problems are currently receiving a great deal of attention in virtually all scientific disciplines. Most of the work done so far has dealt with systems governed by ordinary differential equations. This paper points out that the methods most commonly used for these problems are not suitable for inverse problems ...
openaire   +2 more sources

Linearized boundary control method for an acoustic inverse boundary value problem

open access: yesInverse Problems, 2022
Abstract We develop a linearized boundary control method for the inverse boundary value problem of determining a potential in the acoustic wave equation from the Neumann-to-Dirichlet map. When the linearization is at the zero potential, we derive a reconstruction formula based on the boundary control method and prove that it is of ...
Lauri Oksanen, Tianyu Yang, Yang Yang
openaire   +3 more sources

A spacetime collocation Trefftz method for solving the inverse heat conduction problem

open access: yesAdvances in Mechanical Engineering, 2019
In this article, a novel spacetime collocation Trefftz method for solving the inverse heat conduction problem is presented. This pioneering work is based on the spacetime collocation Trefftz method; the method operates by collocating the boundary points ...
Cheng-Yu Ku   +4 more
doaj   +1 more source

On the Numerical Solution of a Hyperbolic Inverse Boundary Value Problem in Bounded Domains

open access: yesMathematics, 2022
We consider the inverse problem of reconstructing the boundary curve of a cavity embedded in a bounded domain. The problem is formulated in two dimensions for the wave equation.
Roman Chapko, Leonidas Mindrinos
doaj   +1 more source

An inverse boundary-value problem for semilinear elliptic equations

open access: yesElectronic Journal of Differential Equations, 2010
We show that in dimension two or greater, a certain equivalence class of the scalar coefficient $a(x,u)$ of the semilinear elliptic equation $Delta u,+a(x,u)=0$ is uniquely determined by the Dirichlet to Neumann map of the equation on a bounded ...
Ziqi Sun
doaj  

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