Vol. 66, No. 1, 2022

Russian Mathematics

Retractable and Coretractable Abelian Groups

D. Yu. Artemov p. 1 abstract

About the Methods of Extracting a Biological Resource That Provide the Maximum Average Time Benefit

M. S. Woldeab and L. I. Rodina p. 8 abstract

Unsteady Coupled Elastic Diffusion Processes in an Orthotropic Cylinder Taking into Account Relaxation of Diffusion Fluxes

N. A. Zverev, A. V. Zemskov and D. V. Tarlakovskii p. 19 abstract

Global Stability of Systems of Nonlinear Itô Differential Equations with Aftereffect and N.V. Azbelev’s W-Method

R. I. Kadiev and A. V. Ponosov p. 31 abstract

Characterization of Weighted Mixed Norm Spaces of Analytic Functions Defined in Terms of Conditions on Fourier Coefficients

A. N. Karapetyants and I. Yu. Smirnova p. 46 abstract

Influence of the External-Environment Resistance Coefficient on Population Dynamics

S. A. Kaschenko and D. O. Loginov p. 53 abstract

Relatively Elementary Definability of the Class of Universal Graphic Semiautomata in the Class of Semigroups

R. A. Farakhutdinov p. 62 abstract

Computable Linear Orders and the Ershov Hierarchy

Y. A. Michailovskaya and A. N. Frolov p. 71 abstract