Subalgebras of the poincaré algebra AP(2, 3) and the symmetric reduction of the nonlinear ultrahyperbolic d'Alembert equation. I L. F. BarannikV. I. LagnoV. I. Fushchich OriginalPaper Pages: 351 - 356
A differential equation with a small parameter at the highest derivative G. S. Zhukova OriginalPaper Pages: 356 - 362
Convergence of linear means of multiple fourier series of continuous functions P. V. Zaderei OriginalPaper Pages: 363 - 369
An optimal design for the best prediction of a linear regression function A. Yu. Zaigraev OriginalPaper Pages: 369 - 372
A class of groups with invariant subgroups of infinite index A. V. Kraichuk OriginalPaper Pages: 377 - 381
Approximation of functions regular in convex polygons by exponential polynomials Yu. I. Mel'nik OriginalPaper Pages: 382 - 387
Algebraic scheme of discrete approximations of linear and nonlinear dynamical systems of mathematical physics Yu. A. Mitropol'skiiA. K. PrikarpatskiiV. Gr. Samoilenko OriginalPaper Pages: 388 - 392
A singular one-point problem for a nonlinear system with lag S. B. Norkin OriginalPaper Pages: 393 - 403
An application of the projective spectral theorem to commuting families of operators V. L. OstrovskiiYu. S. Samoilenko OriginalPaper Pages: 404 - 414
“Truncation” of countable systems of differential equations with impulse action S. P. Rogovchenko OriginalPaper Pages: 415 - 419
A limit theorem for stochastic functions, constructed in terms of quadratic forms from Gaussian random variables Yu. M. Ryzhov OriginalPaper Pages: 419 - 424
Method of averaging in multifrequency systems with slowly varying parameters A. M. SamoilenkoR. I. Petrishin OriginalPaper Pages: 425 - 431
Asymptotic investigation of a linear-quadratic control problem T. P. Yatsenko OriginalPaper Pages: 431 - 437
Continuous dependence on parameters of the bounded solution of a Riccati differential equation I. N. Grod Brief Communications Pages: 442 - 445
A group approach to the integration of the infinite Toda chain A. Yu. DaletskiiG. B. Podkolzin Brief Communications Pages: 445 - 447
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
Evolution of spectral data and nonlinear equations L. A. Sakhnovich Brief Communications Pages: 459 - 461
Mixed product of stochastic semigroups generated by Wiener processes T. A. Skorokhod Brief Communications Pages: 461 - 463
Limit distribution of the position of a semicontinuous process with negative infinite mean at the moment of exit from an interval V. N. SuprunV. M. Shurenkov Brief Communications Pages: 464 - 466
