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 Mat. Zametki: Year: Volume: Issue: Page: Find

 Sergei Borisovich Stechkin (photo) On the fiftieth birthday of S. B. Stechkin 543 Almost convex and Chebyshev setsL. I. Vlasov 545 Best approximations of functionals on certain setsV. N. Gabushin 551 The possibility of periodic spline interpolationP. V. Galkin 563 The order of approximation by partial sums of lacunary series in Banach spacesV. F. Gaposhkin 575 The existence of a best approximating element in $(F)$-space with integral metricA. L. Garkavi 583 Conditions for the localization of partial sums of S. M. Nikol'skii's class of multiple trigonometric Fourier seriesV. A. Il'in 595 Convergence of Riemann sums for functions which can be represented by trigonometric series with coefficients forming a monotonic sequenceB. V. Pannikov 607 Quasiconvex uniform-convergence factors for Fourier series of functions with a given modulus of continuityS. A. Telyakovskii 619 Some estimates of solutions of degenerate $(k,0)$-elliptic equationsL. P. Kuptsov 625 Newton's method for the solution of systems of equalities and inequalitiesB. N. Pshenichnyi 635 Trigonometric sums with exponential functions and the distribution of signs in repeating decimalsN. M. Korobov 641 Characteristic properties of strong integral and strong $B$-integral self-adjoint operatorsV. B. Korotkov 653 Some properties of Shannon functionsN. A. Karpova 663 Solid angles subtended by multidimensional ellipsoidsE. G. Nikolaev 675