Contents

Russian Mathematics

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Vol. 67, No. 6, 2023

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On Idempotents of Semigroup Varieties of m-Groups

N. V. Bayanova and A. V. Zenkov p. 1  abstract

Involutions in Algebras of Upper-Triangular Matrices

I. A. Kulguskin and D. T. Tapkin p. 8  abstract

The Structure of Differential Invariants for a Free Symmetry Group Action

A. A. Magazev and I. V. Shirokov p. 26  abstract

On Game Problems of Controlling Pencil Trajectories under Integral Constraints on the Controls of Players

N. A. Mamadaliev, T. T. Ibaydullaev and G. M. Abdualimova p. 34  abstract

Solvability of an Infinite System of Linear Algebraic Equations with an Infinite Number of Unknowns

V. S. Mokeychev p. 46  abstract

To the Calculation of the Mapping Degree of Finite Dimensional Vector Field

E. Mukhamadiev and A. N. Naimov p. 56  abstract

Solvability of Iterative System of Fractional Order Differential Equations with Nonhomogeneous Boundary Conditions

K. R. Prasad, N. Sreedhar and M. Rashmita p. 63  abstract

Differential Calculuses on Group Algebras

A. A. Arutyunov p. 77  abstract

Nonalternating Hamiltonian Forms over a Divided Power Algebra of Characteristic 2

A. V. Kondrateva and M. I. Kuznetsov p. 82  abstract

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