Vol. 67, No. 7, 2023

Russian Mathematics

Conditions for the Existence of Eigenvalues of a Three-Particle Lattice Model Hamiltonian

B. I. Bahronov, T. H. Rasulov and M. Rehman p. 1 abstract

Fatou’s Theorem for A(z)-Analytic Functions

N. M. Zhabborov and B. E. Husenov p. 9 abstract

On Estimates for Maximal Operators

I. A. Ikromov and A. M. Barakayev p. 17 abstract

Linear Uniformalization of the Countable Family of Topological Properties

Dz. N. Kazhamiakin p. 27 abstract

Solving Three Systems of Functional Equations Associated with Complex, Double, and Dual Numbers

V. A. Kyrov and G. G. Mikhailichenko p. 34 abstract

Fundamental Solution of a Singular Bessel Differential Operator with a Negative Parameter

L. N. Lyakhov, E. L. Sanina, S. A. Roshchupkin and Yu. N. Bulatov p. 43 abstract

A Convex Combination of Two Quadratic Stochastic Operators Acting in the 2D Simplex

B. J. Mamurov p. 55 abstract

Invariant Measure of a Circle Map with a Mixed Type of Singularities

U. A. Safarov p. 59 abstract

Grading of a Semigroup C*-Algebra by a Local Group

S. A. Grigoryan and A. Sh. Sharafutdinov p. 72 abstract

Application of the Wu Model for Solving the Inverse Problem of Designing Supercavitating Hydrofoils

D. V. Maklakov and S. E. Gazizova p. 77 abstract