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

 Structure of $p$-adic Schottky groupsN. G. Chebotarev 625 Convergence of Cesàro means of negative order of functions of bounded generalized second variationT. I. Akhobadze 631 Cauchy-type $LG^*$ integralI. A. Vinogradova 645 Best approximation by splines on classes of periodic functions in the metric of $L$N. P. Korneichuk 655 Tests for the convergence of continued fractions, based on the fundamental system of inequalitiesS. S. Khloponin 665 Perturbations of the Schrödinger equation by potentials with small supportI. D. Chueshov 675 Conditions for the embedding of classes of sequences and their consequencesI. V. Shragin 681 Approximation of a linear system of second-order differential equationsYu. Ya. Belov 693 Self-conjugacy of abstract differential operators of the hyperbolic typeL. I. Vainerman 703 Conditions for the self-adjointness of a quasi-elliptic operatorM. G. Gimadislamov 709 Regularity of boundary points for linear equations of parabolic typeI. T. Mamedov 717 Coercive estimates for a class of differential operatorsB. P. Paneyakh 725 Extension of linear functionals in Banach spaces of measurable functionsM. Sh. Braverman, G. Ya. Lozanovskii 733 $R^{(\infty)}$ is diffeomorphic to $R^{(\infty)}\setminus\{0\}$A. A. Lobuzov 741 A certain approach to the problem of regularization on the basis of the perturbation of linear operatorsN. A. Sidorov, V. A. Trenogin 747 Inversion of the oscillatory property of focusing operatorsYu. V. Pokornyi, S. V. Smitskikh 753 Axiomatic theory of convexityV. V. Tuz 761 Contractibility of the diagonal of the product of a hyperelliptic curve with itselfB. V. Martynov 771 Reports read at the International Conference on the Theory of Approximation of Functions held at Kaluga from July 24 to 28, 1975 Approximation of a class of functions of several variables by certain polynomial operatorsL. I. Bausov, I. M. Petrov 775 Theorems of Korovkin typeA. D. Gadzhiev 781 Exact constants in some converse theorems for approximations by trigonometric polynomialsA. F. Timan, V. N. Trofimov 787