Contents

Computational Mathematics and Mathematical Physics


Vol. 60, No. 11, 2020


General Numerical Methods

Unreliability of Available Pseudorandom Number Generators

A. A. Belov, N. N. Kalitkin and M. A. Tintul p. 1747  abstract

A Note on a Posteriori Error Bounds for Numerical Solutions of Elliptic Equations with a Piecewise Constant Reaction Coefficient Having Large Jumps

V. G. Korneev p. 1754  abstract

Computation of Asymptotic Spectral Distributions for Sequences of Grid Operators

S. V. Morozov, S. Serra-Capizzano and E. E. Tyrtyshnikov p. 1761  abstract

Numerical Study of a Singularly Perturbed Two Parameter Problems on a Modified Bakhvalov Mesh

P. Pramod Chakravarthy and Meenakshi Shivhare p. 1778  abstract


Optimal Control

Accelerated Methods for Saddle-Point Problem

M. S. Alkousa, A. V. Gasnikov, D. M. Dvinskikh, D. A. Kovalev and F. S. Stonyakin p. 1787  abstract

Convergence of Hölder Projections to Chebyshev Projections

V. I. Zorkal’tsev p. 1810  abstract


Partial Differential Equations

Biharmonic Obstacle Problem: Guaranteed and Computable Error Bounds for Approximate Solutions

D. E. Apushkinskaya and S. I. Repin p. 1823  abstract

Asymptotics of the Riemann–Hilbert Problem for a Magnetic Reconnection Model in Plasma

S. I. Bezrodnykh and V. I. Vlasov p. 1839  abstract


Mathematical Physics

Recovery of Boundary Functions on External and Internal Open Boundaries in an Open Sea Hydrodynamic Problem

V. I. Agoshkov, N. R. Lezina and T. O. Sheloput p. 1855  abstract

On Regularity of Weak Solutions to a Generalized Voigt Model of Viscoelasticity

V. G. Zvyagin and V. P. Orlov p. 1872  abstract

Mathematical Modeling of the Wuhan COVID-2019 Epidemic and Inverse Problems

S. I. Kabanikhin and O. I. Krivorotko p. 1889  abstract

On the Influence of the Beta Effect on the Spectral Characteristics of Unstable Perturbations of Ocean Currents

S. L. Skorokhodov and N. P. Kuzmina p. 1900  abstract

Mechanism of Locomotion of Synthetic Nanomotors in a Viscous Fluid

S. I. Martynov and L. Yu. Tkach p. 1913  abstract

Variational Method for Determining the Complex-Valued Coefficients of a Nonlinear Nonstationary Schrödinger-Type Equation

M. A. Musaeva p. 1923  abstract

A Hybrid Method for the Computation of a Rarefied Gas Jet Efflux through a Very Long Channel into Vacuum

V. A. Titarev and E. M. Shakhov p. 1936  abstract