Content
Volume 18 (2021), N 1

Differential equations, dynamical systems and optimal control

Chouader R., Benyoucef S., Bendjeddou A.
Kolmogorov differential systems with algebraic limit cycles, pp. 1-8.
PDF DOI 10.33048/semi.2021.18.001

Kozhanov A. I.
Initial-boundary value problems for degenerate hyperbolic equations, pp. 43-53. [Russian, English abstract]
PDF DOI 10.33048/semi.2021.18.004

Islomov B. I., Alikulov E. K.
Analogues of the Cauchy-Goursat problem for a loaded third-order hyperbolic type equation in an infinite three-dimensional domain, pp. 72-85.
PDF DOI 10.33048/semi.2021.18.007

Probability theory and mathematical statistics

Sakhanenko A. I., Wachtel V. I., Prokopenko E. I., Shelepova A. D.
On the asymptotics of the distribution of the exit time beyond a non-increasing boundary for a compound renewal process, pp. 9-26. [Russian, English abstract]
PDF DOI 10.33048/semi.2021.18.002

Discrete mathematics and mathematical cybernetics

Makhnev A. A., Belousov I. N., Paduchikh D. V.
Inverse problems of graph theory: graphs without triangles, pp. 27-42. [Russian, English abstract]
PDF DOI 10.33048/semi.2021.18.003

Mathematical logic, algebra and number theory

Zenkov A. V., Isaeva O. V.
On variety N of normal valued m-groups, pp. 54-60.
PDF DOI 10.33048/semi.2021.18.005

Computational mathematics

Kazantsev I. G., Mukhametzhanova B. O., Iskakov K. T.
Detection of the corner structures in 3D arrays using scalable masks, pp. 61-71.
PDF DOI 10.33048/semi.2021.18.006

Derevtsov E. Yu., Maltseva S. V.
Recovery of a vector field in the cylinder by its jointly known NMR-images and ray transforms, pp. 86-103.
PDF DOI 10.33048/semi.2021.18.008

Real, complex and functional analysis

Kopylov A. P.
Unique determination of conformal type for domains. III, pp. 104-111.
PDF DOI 10.33048/semi.2021.18.009