Results 31 to 40 of about 206,470 (164)

Uniqueness of semilinear elliptic inverse problem

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2003
We consider the uniqueness of the inverse problem for a semilinear elliptic differential equation with Dirichlet condition. The necessary and sufficient condition of unique solution is obtained.
Chaochun Qu, Ping Wang
doaj   +1 more source

The inverse thermography problem as the inverse potential problem for bodies of constant thickness

open access: yesDiscrete and Continuous Models and Applied Computational Science
Background This paper examines a method for correcting thermographic images used in medical diagnostics. Mathematical processing of thermograms is performed within the framework of a mathematical model of a homogeneous, heat-conducting, semi-infinite ...
Evgeniy B. Laneev, Aigul M. Gaipova
doaj   +1 more source

NON-INVASIVE INVERSE PROBLEM IN CIVIL ENGINEERING

open access: yesActa Polytechnica CTU Proceedings, 2017
In this contribution we focus on recovery of spatial distribution of material parameters utilizing only non-invasive boundary measurements. Such methods has gained its importance as imaging techniques in medicine, geophysics or archaeology.
Jan Havelka   +2 more
doaj   +1 more source

Minimal Geometric Deformation: the inverse problem

open access: yesEuropean Physical Journal C: Particles and Fields, 2018
In this paper we show that any static and spherically symmetric anisotropic solution of the Einstein field equations can be thought as a system sourced by certain deformed isotropic system in the context of Minimal Geometric Deformation-decoupling ...
Ernesto Contreras
doaj   +1 more source

INVERSE PARTITION PROBLEMS [PDF]

open access: yesBulletin of informatics and cybernetics, 1999
Summary: We analyze a partition problem and its inverse problem both in discrete variables and in two continuous ones through dynamic programming. We show that an inverse relation and an enveloping relation hold in each case. It is shown that an optimal solution for the discrete partition can be expressed through either an upper-semi-inverse function ...
Iwamoto, Seiichi, Ueno, Takayuki
openaire   +2 more sources

An inverse problem for biharmonic equation

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1988
An inhomogeneity immersed in a medium is found from the measurements of the elastic field on the surface of the medium.
A. G. Ramm
doaj   +1 more source

Inverse scattering problem in turbulent magnetic fluctuations [PDF]

open access: yesAnnales Geophysicae, 2016
We apply a particular form of the inverse scattering theory to turbulent magnetic fluctuations in a plasma. In the present note we develop the theory, formulate the magnetic fluctuation problem in terms of its electrodynamic turbulent response ...
R. A. Treumann   +3 more
doaj   +1 more source

Inverse problem for semilinear Eidelman type equation

open access: yesМатематичні Студії, 2020
The inverse problem for semilinear Eidelman type equation with unknown time dependent function in its right-hand side is considered in this paper. The initial, boundary and integral type overdetermination conditions are posed.
N.P. Protsakh, O. E. Parasiuk-Zasun
doaj   +1 more source

D meson mixing as an inverse problem

open access: yesPhysics Letters B, 2020
We calculate the parameters x and y for the D meson mixing in the Standard Model by considering a dispersion relation between them. The dispersion relation for a fictitious charm quark of arbitrary mass squared s is turned into an inverse problem, via ...
Hsiang-nan Li   +3 more
doaj   +1 more source

A rainbow inverse problem [PDF]

open access: yesESAIM: Proceedings, 2010
Summary: We consider the radiative transfer equation (RTE) with reflection in a three-dimensional domain, infinite in two dimensions, and prove an existence result. Then, we study the inverse problem of retrieving the optical parameters from boundary measurements, with help of existing results by Choulli and Stefanov.
Blasselle, Alexis   +2 more
openaire   +2 more sources

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