Numerical identification of a nonlinear diffusion law via regularization in Hilbert scales
Numerical identification of a nonlinear diffusion law via regularization in Hilbert scales
复制标题
通过希尔伯特尺度正则化非线性扩散定律的数值识别
DOI:
10.1088/0266-5611/30/2/025004
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发表时间:
--
期刊:
影响因子:
2.1
通讯作者:
M. Schlottbom
中科院分区:
文献类型:
--
作者:
H. Egger;J.-F. Pietschmann;M. Schlottbom
We consider the reconstruction of a diffusion coefficient in a quasilinear elliptic problem from a single measurement of overspecified Neumann and Dirichlet data. The uniqueness for this parameter identification problem has been established by Cannon and we therefore focus on the stable solution in the presence of data noise. For this, we utilize a reformulation of the inverse problem as a linear ill-posed operator equation with perturbed data and operators. We are able to explicitly characterize the mapping properties of the corresponding operators which allow us to apply regularization in Hilbert scales. We can then prove convergence and convergence rates of the regularized reconstructions under very mild assumptions on the exact parameter. These are, in fact, already needed for the analysis of the forward problem and no additional source conditions are required. Numerical tests are presented to illustrate the theoretical statements.
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影响因子:
2.9
作者:
H. Egger
通讯作者:
H. Egger
DOI:
--
发表时间:
1993
期刊:
影响因子:
--
作者:
V. Isakov
通讯作者:
V. Isakov
影响因子:
1.4
作者:
A. Lorenzi;A. Lunardi
通讯作者:
A. Lunardi
DOI:
--
发表时间:
1995
期刊:
影响因子:
--
作者:
D. Lesnic;L. Elliott;D. Ingham
通讯作者:
D. Ingham
DOI:
--
发表时间:
1988
期刊:
影响因子:
--
作者:
M. Pilant;W. Rundell
通讯作者:
W. Rundell