1. Subalgebras of the poincaré algebra AP(2, 3) and the symmetric reduction of the nonlinear ultrahyperbolic d'Alembert equation. I

   • L. F. Barannik
   • V. I. Lagno
   • V. I. Fushchich

   OriginalPaper Pages: 351 - 356

2. A differential equation with a small parameter at the highest derivative

   • G. S. Zhukova

   OriginalPaper Pages: 356 - 362

3. Convergence of linear means of multiple fourier series of continuous functions

   • P. V. Zaderei

   OriginalPaper Pages: 363 - 369

4. An optimal design for the best prediction of a linear regression function

   • A. Yu. Zaigraev

   OriginalPaper Pages: 369 - 372

5. Noetherian biserial rings

   • V. V. Kirichenko
   • Yu. V. Yaremenko

   OriginalPaper Pages: 372 - 377

6. A class of groups with invariant subgroups of infinite index

   • A. V. Kraichuk

   OriginalPaper Pages: 377 - 381

7. Approximation of functions regular in convex polygons by exponential polynomials

   • Yu. I. Mel'nik

   OriginalPaper Pages: 382 - 387

8. Algebraic scheme of discrete approximations of linear and nonlinear dynamical systems of mathematical physics

   • Yu. A. Mitropol'skii
   • A. K. Prikarpatskii
   • V. Gr. Samoilenko

   OriginalPaper Pages: 388 - 392

9. A singular one-point problem for a nonlinear system with lag

   • S. B. Norkin

   OriginalPaper Pages: 393 - 403

10. An application of the projective spectral theorem to commuting families of operators

    • V. L. Ostrovskii
    • Yu. S. Samoilenko

    OriginalPaper Pages: 404 - 414

11. “Truncation” of countable systems of differential equations with impulse action

    • S. P. Rogovchenko

    OriginalPaper Pages: 415 - 419

12. A limit theorem for stochastic functions, constructed in terms of quadratic forms from Gaussian random variables

    • Yu. M. Ryzhov

    OriginalPaper Pages: 419 - 424

13. Method of averaging in multifrequency systems with slowly varying parameters

    • A. M. Samoilenko
    • R. I. Petrishin

    OriginalPaper Pages: 425 - 431

14. Asymptotic investigation of a linear-quadratic control problem

    • T. P. Yatsenko

    OriginalPaper Pages: 431 - 437

15. A volterra-type integral equation

    • S. Ashirov
    • Ya. D. Mamedov

    Brief Communications Pages: 438 - 442

16. Continuous dependence on parameters of the bounded solution of a Riccati differential equation

    • I. N. Grod

    Brief Communications Pages: 442 - 445

17. A group approach to the integration of the infinite Toda chain

    • A. Yu. Daletskii
    • G. B. Podkolzin

    Brief Communications Pages: 445 - 447

18. Mappings of a circular multiply connected region onto a plane and a disk with cuts along finite rectilinear segments

    • L. E. Dunduchenko

    Brief Communications Pages: 448 - 452

19. Semiinversion and properties of matrix invariants

    • A. G. Mazko

    Brief Communications Pages: 452 - 454

20. Periodic digraphs and their properties

    • V. A. Pavlenko

    Brief Communications Pages: 455 - 458

21. Evolution of spectral data and nonlinear equations

    • L. A. Sakhnovich

    Brief Communications Pages: 459 - 461

22. Mixed product of stochastic semigroups generated by Wiener processes

    • T. A. Skorokhod

    Brief Communications Pages: 461 - 463

23. Limit distribution of the position of a semicontinuous process with negative infinite mean at the moment of exit from an interval

    • V. N. Suprun
    • V. M. Shurenkov

    Brief Communications Pages: 464 - 466