Vol. 66, No. 6, 2022

Russian Mathematics

Relative Demicompactness Properties for Exponentially Bounded C ⁰-Semigroups

Hedi Benkhaled, Asrar Elleuch and Aref Jeribi p. 1 abstract

Realization Functionals and Description of a Modulus of Smoothness in Variable Exponent Lebesgue Spaces

S. S. Volosivets p. 8 abstract

Counterexamples of Small Size for Three-Sided Stable Matching with Cyclic Preferences

E. Yu. Lerner p. 20 abstract

Integral Formulas of Carleman and Levin for Meromorphic and Subharmonic Functions

E. B. Men’shikova p. 28 abstract

Problem with an Analog of the Bitsadze–Samaraskii Condition for One Class of Degenerate Hyperbolic Equations

G. M. Mirsaburova p. 43 abstract

The Nonlocal Problem for a Hyperbolic Equation with a Parabolic Degeneracy

A. V. Tarasenko and J. O. Yakovleva p. 48 abstract

A Differential-Algebraic Boundary Value Constant-Delay Problem in the Case of a Variable-Rank Matrix at the Derivative

S. M. Chuiko p. 54 abstract

Direct and Inverse Theorems of the Approximation of Functions by Algebraic Polynomials and Splines in the Norms of the Sobolev Space

R. Z. Dautov p. 65 abstract

Weak Solvability of the Nonlinearly Viscous Pavlovskii Model

A. V. Zvyagin p. 73 abstract