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Estimation of the best approximation of a summable function on the real axis by entire functions of finite degree. (English. Russian original) Zbl 0224.41004

Sov. Math., Dokl. 11, 1332-1336 (1970); translation from Dokl. Akad. Nauk SSSR 194, 1013-1016 (1970).

MSC:

41A50 Best approximation, Chebyshev systems
41A25 Rate of convergence, degree of approximation
30D15 Special classes of entire functions of one complex variable and growth estimates