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Mathematical Modelling
Inverse problems for mathematical models of quasistationary electromagnetic waves in anisotropic nonmetallic media with dispersion
S. G. Pyatkovab, S. N. Sherginb a South Ural State University, Chelyabinsk, Russian Federation
b Ugra State University, Khanty-Mansyisk, Russian Federation
Abstract:
We consider inverse problems
of evolution type for mathematical models of quasistationary
electromagnetic waves. It is assumed in the model that the wave
length is small as compared with space inhomogeneities. In this
case the electric and magnetic potential satisfy elliptic
equations of second order in the space variables comprising
integral summands of convolution type in time. After
differentiation with respect to time the equation is reduced to
a composite type equation with an integral summand. The
boundary conditions are supplemented with the overdetermination
conditions which are a collection of functionals of a solution
(integrals of a solution with weight, the values of a solution
at separate points, etc.). The unknowns are a solution to the
equation and unknown coefficients in the integral operator.
Global (in time) existence and uniqueness theorems of this
problem and stability estimates are established.
Keywords:
Sobolev-type equation; equation with memory; elliptic equation; inverse problem; boundary value problem.
Received: 30.01.2018
Citation:
S. G. Pyatkov, S. N. Shergin, “Inverse problems for mathematical models of quasistationary electromagnetic waves in anisotropic nonmetallic media with dispersion”, Vestnik YuUrGU. Ser. Mat. Model. Progr., 11:1 (2018), 44–59
Linking options:
https://www.mathnet.ru/eng/vyuru417 https://www.mathnet.ru/eng/vyuru/v11/i1/p44
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Abstract page: | 253 | Full-text PDF : | 66 | References: | 43 |
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