Contents

Russian Mathematics

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Vol. 68, No. 4, 2024

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On Decompositions and Transitive Actions of Nilpotent Lie Groups

V. V. Gorbatsevich p. 1  abstract

Variation and λ-Jump Inequalities on H^p Spaces

S. Demir p. 12  abstract

Conditions for the Existence of Power Solutions to a Linear Difference Equation with Constant Coefficients

V. E. Kruglov p. 17  abstract

On the Existence of an Eigenvalue of the Generalized Friedrichs Model

M. I. Muminov, and U. R. Shadiev p. 28  abstract

Sharpening of Turán-Type Inequality for Polynomials

N. A. Rather, A. Bhat, and M. Shafi p. 35  abstract

On Infinite Spectra of Oscillation Exponents of Third-Order Linear Differential Equations

A. Kh. Stash p. 42  abstract

On the Absolute Convergence of Fourier Series of Almost Periodic Functions

Yu. Kh. Khasanov, and F. M. Talbakov p. 60  abstract

BRIEF COMMUNICATION

On the Baillie PSW Conjecture

Sh. T. Ishmukhametov, B. G. Mubarakov, R. G. Rubtsova, and E. V. Oleinikova p. 72  abstract

On Undecidability of Unary Nonnested PFP Operators for One Successor Function Theory

V. S. Sekorin p. 79  abstract

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