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JOURNALS // Matematicheskie Trudy // Archive

Mat. Tr., 2018 Volume 21, Number 2, Pages 117–135 (Mi mt341)

This article is cited in 4 papers

Iterative processes for ill-posed problems with a monotone operator

V. V. Vasinab

a Krasovskiĭ Institute of Mathematics, Ekaterinburg, 620990 Russia
b Ural Federal University, Ekaterinburg, 620000 Russia

Abstract: We consider the problem on constructing a stable approximate solution of an inverse problem formulated as a nonlinear irregular equation with a monotone operator. We suggest a two-stage method based on Lavrentiev's regularization scheme and iterative approximation with the use of either modified Newton's method or a regularized $\kappa$-process. We prove that the iterative processes converge and the iterations possess the Fejér property. We show that our method generates a regularization algorithm under a certain adjustment of control parameters. On the set of source-like representable solutions, we find an optimal-order error estimate for the algorithm.

Key words: ill-posed problem, Lavrentiev's regularization scheme, Newton's method, $\kappa$-processes, error estimation.

UDC: 517.988.68

Received: 18.12.2017

DOI: 10.17377/mattrudy.2018.21.205


 English version:
Siberian Advances in Mathematics, 2019, 29, 217–229

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