Contents

Vestnik St. Petersburg University, Mathematics

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Vol. 59, No. 2, 2026

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MATHEMATICS

Locally Balanced Modules

A. N. Abyzov and A. D. Maklakov p. 125  abstract

A New Algorithm for Solving a System of Linear Inequalities Based on the Accelerated Fejér Process for Funding a Non-Negative Solution to a System of Linear Algebraic Equations. Part 1

V. I. Erokhin and G. Sh. Tamasyan p. 134  abstract

Asymptotical Separation of Polynomial Signals from Harmonics by Singular Spectrum Analysis

V. V. Nekrutkin and D. M. Yakovlev p. 144  abstract

Simluation of Concomitants of Records from Sequences of Independent and Non-Identically Distributed Vectors

A. V. Stepanov p. 155  abstract

Estimation of the Growth of Certain Polynomials in Terms of Doubly Periodic Weierstrass Functions

M. A. Shagay and N. A. Shirokov p. 163  abstract

Some Commutativity Theorems in Factor Rings

Gurninder Singh Sandhu p. 171  abstract

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MECHANICS

Free Vibrations of Prismatic Shells with a Square Cross Section

G. T. Dzebisashvili and A. L. Smirnov p. 178  abstract

Subsurface Stresses in a Hydrogen-Weakened Bearing Caused by Contact with a Cylindrical Roller

T. V. Zinovieva, A. R. Galyautdinova, and A. K. Belyaev p. 186  abstract

Evaluation of the Vibrational Relaxation Time for Air Components Based on the FHO and FHO-FR Models

A. A. Isakov, A. Yu. Letova, and E. V. Kustova p. 195  abstract

Damping of Rotational Motions of Circular Cylinders in an Airflow

A. N. Ryabinin p. 208  abstract

Dynamics of a Three-Link Pendulum with Viscous Friction in the Joints. I. Analysis of the Roots of the Characteristic Equation

A. S. Smirnov and K. N. Sarvilov p. 215  abstract

Dynamics of the Final Deflections of a Flexible Kapitsa Pendulum on a Hinged Support

T. P. Tovstik p. 224  abstract

Application of Artificial Neural Networks in the Problem of Searching for Periodic Signals

V. V. Topinskiy and R. V. Baluev p. 234  abstract

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