Vol. 66, No. 7, 2022

Russian Mathematics

The Inverse Problem for Generalized Contraharmonic Means

T. H. Dinh, C. T. Le and B. K. Vo p. 1 abstract

Krasnoselskii Canonical Domains and the Existence of Nonnegative Poisson Bounded Solutions

K. S. Lapin p. 7 abstract

Boundary Value Problem for a Mixed-Type Equation with Singular Coefficients

M. Kh. Ruziev p. 14 abstract

Aggregation of Fuzzy Relations of Strict Order

S. O. Smerchinskaya and N. P. Yashina p. 25 abstract

What Can Be Expected from the Image of σ-Derivations on Banach Algebras?

A. Hosseini p. 38 abstract

A Problem with Mixed Boundary Conditions for a Singular Elliptic Equation in an Infinite Domain

T. G. Ergashev and Z. R. Tulakova p. 51 abstract

Expression of Elliptic Functions in Terms of Jacobi Functions

M. M. Alimov p. 64 abstract

Solvability of the Initial-Boundary Value Problem for the High-Order Oldroyd Model

V. G. Zvyagin, V. P. Orlov and M. V. Turbin p. 70 abstract

Spectral Estimates for the Fourth-Order Differential Operator with Periodic Coefficients

D. M. Polyakov p. 76 abstract