Vol. 61, No. 8, 2021

Computational Mathematics and Mathematical Physics

General Numerical Methods

On Changing Between Bases of the Space of Representations of Group SO(2,2)

J. Choi and I. A. Shilin p. 1219 abstract

Ordinary Differential Equations

Direct Statistical Modeling of HIV-1 Infection Based on a Non-Markovian Stochastic Model

G. A. Bocharov, K. K. Loginov, N. V. Pertsev and V. A. Topchii p. 1229 abstract

Approximate Solution of Nonlinear Differential Equations with the Help of Rational Spline Functions

V. G. Magomedova and A.-R. K. Ramazanov p. 1252 abstract

New Approach to the Iterative Method for Numerical Solution of a Convolution Type Equation Determined for a Certain Class of Problems

M. L. Maslakov p. 1260 abstract

Approximate Solution of a Singular Integral Equation of the First Kind Using Chebyshev Polynomials with Zero Values at Both Endpoints of the Integration Interval

Sh. S. Khubezhty p. 1269 abstract

Partial Differential Equations

Sufficient Conditions for Solvability of One Class of Neumann-Type Problems for the Polyharmonic Equation

V. V. Karachik p. 1276 abstract

Potential Theory and Schauder Estimate in Hölder Spaces for (3 + 1)-Dimensional Benjamin–Bona–Mahoney–Burgers Equation

M. O. Korpusov and D. K. Yablochkin p. 1289 abstract

Mathematical Physics

Characteristic Based Volume Penalization Method for Numerical Simulation of Compressible Flows on Unstructured Meshes

I. V. Abalakin, O. V. Vasilyev, N. S. Zhdanova and T. K. Kozubskaya p. 1315 abstract

Numerical-Statistical and Analytical Study of Asymptotics for the Average Multiplication Particle Flow in a Random Medium

G. Z. Lotova and G. A. Mikhailov p. 1330 abstract

Computation of Seismic Resistance of an Ice Island by the Grid-Characteristic Method on Combined Grids

I. B. Petrov and A. V. Favorskaya p. 1339 abstract

Numerical Study of Propagation of Nonlinear Coupled Surface and Leaky Electromagnetic Waves in a Circular Cylindrical Metal–Dielectric Waveguide

Yu. G. Smirnov, E. Yu. Smol’kin and M. O. Snegur p. 1353 abstract

Information Science

Minimax Problem of Suppressing a Communication Network