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The inverse basis as applied to the mean-square approximation of a function. (English. Russian original) Zbl 0974.41001

Comput. Math. Math. Phys. 39, No. 3, 517 (1999); translation from Zh. Vychisl. Mat. Mat. Fiz. 39, No. 3, 543 (1999).

MSC:

41-01 Introductory exposition (textbooks, tutorial papers, etc.) pertaining to approximations and expansions
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