Geodesic
On optimal algorithms for operator equations of the first kind with a perturbed operator
Sbornik. Mathematics, Tome 33 (1977) no. 2, pp. 281-297 Cet article a éte moissonné depuis la source Math-Net.Ru

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In this paper the optimality of some methods for solving linear operator equations of the first kind with a perturbed operator is investigated, and unimprovable error estimates for these methods in a class of solution are derived. Bibliography: 17 titles. 
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V. P. Tanana. On optimal algorithms for operator equations of the first kind with a perturbed operator. Sbornik. Mathematics, Tome 33 (1977) no. 2, pp. 281-297. http://geodesic.mathdoc.fr/item/SM_1977_33_2_a6/

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