Contents

Mathematical Notes

Vol. 117, No. 1-2, 2025

Research Articles

Spectral Properties of the Friedrichs Model with Involution

G. A. Agafonkin p. 3  abstract

Asymptotic Behavior of “Long” Products of Sines and the Pisot Numbers

E. D. Alferova, V. E. Podol’skii, and V. B. Sherstyukov p. 14  abstract

Regularity of Calderón–Zygmund Operators in Domains

A. V. Vasin p. 28  abstract

Iterated Function System with Fuzzy Banach Orbital Condition for Fractal Generation

S. Ghosh, P. Saha, and B. S. Choudhury p. 42  abstract

A Remarkable Quadratic Form of Voronoi

V. P. Grishukhin p. 51  abstract

Complete Complexity Dichotomies for the Dominating Set Problem

G. S. Dakhno, and D. S. Malyshev p. 62  abstract

Sets of Uniqueness for Subsystems of the Trigonometric System

A. D. Kazakova, and M. G. Plotnikov p. 75  abstract

About the Radial Solutions of the Nonlinear \((p_1,p_2)\)-Laplacian Problem

B. Khamessi p. 85  abstract

Localization of Solutions of Ordinary Differential Equations near an Unstable Singular Point

E. I. Kugushev, and T. V. Salnikova p. 108  abstract

On the Torsion in the Group \(F/[M,N]\) in the Case of Combinatorial Asphericity of the Groups \(F/M\) and \(F/N\)

O. V. Kulikova p. 114  abstract

John–Nirenberg Inequality for Riemann Type Series

K. A. Oganesyan p. 123  abstract

Fields of Algebraic Numbers Whose Multiplicative Groups are Free Modulo the Group of Units

K. N. Ponomarev p. 132  abstract

On Weighted Discrete Hardy and Riemann–Liouville Inequalities

D. V. Prokhorov, and V. D. Stepanov p. 138  abstract

Rigid Poisson Suspensions without Roots

V. V. Ryzhikov p. 154  abstract

On a Refinement of the Schneider–Lang Theorem. II. The Arithmetic of the Degenerate Case

A. Ya. Yanchenko p. 158  abstract

Personalia

Dmitrii Valerievich Treschev

The Editorial Board p. 171  abstract

Research Articles

Generalization of Peano and Carathéodory Theorems for a Boundary Value Problem

E. R. Avakov, and G. G. Magaril-Il’yaev p. 173  abstract

A Coupled System of Sturm–Liouville Differential Equations

S. Belkahla, and Z. ZineElAbidine p. 181  abstract

Multipliers for the Calderón–Lozanovskii Construction

E. I. Berezhnoi p. 195  abstract

Determinability of Topological Spaces by the Semigroup of Continuous Binary Relations

E. M. Vechtomov, and M. V. Volkov p. 208  abstract

Peano Curves and Finite Automata

A. V. Vlasov, and S. B. Gashkov p. 214  abstract

The \(\circ\) Operation and \(*\) Operation of Fan Graphs

G. Zhu, Y. Cui, Y. Yang, and Y. Yang p. 229  abstract

Topological Properties of Spaces with a Distance

E. S. Zhukovskiy p. 248  abstract

Uniformly Convex Sets in Banach Spaces

G. E. Ivanov p. 259  abstract

Independence of the Comprehension Schema in Second-Order Arithmetic from the Parameter-Free Countable Choice

V. G. Kanovei, and V. A. Lyubetsky p. 275  abstract

Lower Bounds for the Leading Eigenvalue of the Laplacian on a Graph

S. A. Karkuzaev, and R. Ch. Kulaev p. 287  abstract

Surfaces on the Pseudo-Helmholtz Group

V. A. Kyrov p. 300  abstract

Duality of Invariant Norms of Continuous-Time Dynamical Systems

A. M. Musaeva p. 309  abstract

Definition and Properties of Oscillation, Wandering, and Rotation Measures of a Differential System

I. N. Sergeev p. 317  abstract

Estimation of the Norm of the Hermite–Fejér Interpolation Operator with Variable Order Derivatives in Sobolev Spaces

A. I. Fedotov p. 326  abstract

Finite Groups with Given \(\rho\)-Semipermutable Subgroups

Y. X. Huang, and Y. Xu p. 338  abstract