Vol. 68, No. 5, 2024

Russian Mathematics

Controlled Frames in n-Hilbert Spaces and Their Tensor Products

P. Ghosh, and T. K. Samanta p. 1 abstract

The Variation Operator of Differences of Averages over Lacunary Sequences Maps \(H_{w}^{1}(\mathbb{R})\) to \(L_{w}^{1}(\mathbb{R})\)

S. Demir p. 20 abstract

Construction of First-Order Invariant Differential Operators

O. L. Kurnyavko, and I. V. Shirokov p. 27 abstract

A Multiparameter Family of Solutions to the Volterra Linear Integral Equation of the First Kind

I. V. Sapronov p. 35 abstract

Integration of the Korteweg–de Vries Equation with Time-Dependent Coefficients in the Case of Moving Eigenvalues of the Sturm–Liouville Operator

U. A. Hoitmetov, and T. G. Khasanov p. 51 abstract

Exact Formulas for Esimating the Area of Flow Regions in Free Boundary Problems

M. M. Alimov p. 66 abstract

Formula for Regularized Trace of 2m-Order Differential Operator with Periodic Boundary Conditions

E. F. Akhmerova, M. A. Rahmatzoda, and T. G. Amangildin p. 72 abstract

Weak Solvability of One Model of a Nonlinearly Retarded Fluid in a Thermal Field

E. I. Kostenko p. 77 abstract