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

 Convergence and divergence systemsV. F. Gaposhkin 253 Some estimates of the rate of summability of orthogonal series by linear meansA. V. Efimov 261 A generalization of a theorem of M. Riesz to the case of functions of several variablesL. V. Zhizhiashvili 269 On a property of $N$-functionsD. V. Salekhov 281 Approximation of differentiable functions by partial sums of their Fourier seriesS. A. Telyakovskii 291 Sufficient conditions that the minimum and maximum of partial differential operators should coincide and that their spectra should be discreteM. G. Gimadislamov 301 The convergence of a new iteration process for the solution of nonlinear functional equations in Banach spaceD. K. Lika 313 Nonsymmetrical distance between probability distributions, entropy and the theorem of PythagorasN. N. Chentsov 323 On zeta functions of fields of algebraic numbersB. Z. Moroz 333 On a certain class of transcendental numbersA. A. Shmelev 341 On subgroups of Demushkin groupsI. V. Andozhskii 349 Isomorphisms of free decompositions of $\Gamma$-operator groups with a regular group of operators $\Gamma$V. A. Artamonov 355 On the existence of stably nilpotent subgroups in locally nilpotent groupsD. I. Zaitsev 361 On minimal universal treesM. K. Gol'dberg, É. M. Livshits 371