Contents

Mathematical Notes

Vol. 115, No. 1-2, 2024

Research Articles

Approximation to the Derivatives of a Function Defined on a Simplex under Lagrangian Interpolation

N. V. Baidakova, and Yu. N. Subbotin p. 3  abstract

On Solutions of the One-Dimensional Goldshtik Problem

O. V. Baskov, and D. K. Potapov p. 12  abstract

Two Contrasting Examples of Multidimensional Differential Systems with Lyapunov Extreme Instability

A. A. Bondarev p. 21  abstract

Comparison of Purely Greedy and Orthogonal Greedy Algorithm

K. S. Vishnevetskiy p. 37  abstract

Sharp \(L^p\)-Estimates for the Fourier Transform of Surface Measures

I. A. Ikromov, and D. I. Ikromova p. 44  abstract

On Rational Spline Solutions of Differential Equations with Singularities in the Coefficients of the Derivatives

V. G. Magomedova, and A.-R. K. Ramazanov p. 66  abstract

Implementation of Linear Boolean Functions by Self-Correcting Circuits of Unreliable Logic Gates

K. A. Popkov p. 77  abstract

Periodic Gibbs Measures and Their Extremality for the HC-Blume–Capel Model in the Case of a Wand with a Chemical Potential on a Cayley Tree

N. M. Khatamov p. 89  abstract

Extremal Interpolation in the Mean in the Space \(L_1(\mathbb R)\) with Overlapping Averaging Intervals

V. T. Shevaldin p. 102  abstract

On a Linear Form in the Ordinates of Zeros of the Riemann Zeta Function

E. D. Yudelevich p. 114  abstract

Short Communications

Letter to the Editor

V. V. Gorbatsevich p. 131  abstract

Research Articles

Dominant Sets for Model Spaces in Several Variables

A. B. Aleksandrov, and E. S. Dubtsov p. 135  abstract

On the Sum of Negative Eigenvalues of the Three-Dimensional Schrödinger Operator

A. R. Aliev, and E. H. Eyvazov p. 142  abstract

On the Second Order Sufficient Optimality Conditions for a Problem of Mathematical Programming

A. V. Arutyunov, and S. E. Zhukovskiy p. 148  abstract

The Strong Convexity Supporting Condition and the Lipschitz Condition for the Metric Projection

M. V. Balashov, and K. Z. Biglov p. 164  abstract

On Algebraic Properties of Integrals of Products of Some Hypergeometric Functions

V. A. Gorelov p. 173  abstract

Asymptotics of Fundamental Solutions of Parabolic Problems

V. G. Danilov p. 182  abstract

On the Well-Posedness of an Initial–Boundary Value Problem for a Degenerate Heat Equation

A. R. Zainullov, and K. B. Sabitov p. 192  abstract

Bernstein Inequality for the Riesz Derivative of Order \(0<\alpha<1\) of Entire Functions of Exponential Type in the Uniform Norm

A. O. Leont’eva p. 205  abstract

Uniform Rational Approximation of Even and Odd Continuations of Functions

T. S. Mardvilko p. 215  abstract

Estimates of the Number of Edges in Subgraphs of Johnson Graphs

E. A. Neustroeva, and A. M. Raigorodskii p. 223  abstract

Existence, Asymptotics, and Lyapunov Stability of Solutions of Periodic Parabolic Problems for Tikhonov-Type Reaction–Diffusion Systems

N. N. Nefedov p. 232  abstract

Ricci Solitons on Generalized Sasakian-Space-Forms with Kenmotsu Metric

Savita Rani, and Ram Shankar Gupta p. 240  abstract

Estimate for the Rate of Uniform Convergence of the Fourier Series of a Continuous Periodic Function of Bounded \(p\)-Variation

T. Yu. Semenova p. 258  abstract

Short Communications

Calculation of the Limit of a Special Sequence of Trigonometric Functions

E. D. Alferova, and V. B. Sherstyukov p. 269  abstract

Approximation of Periodic Functions of High Generalized Smoothness by Fourier Sums

N. V. Laktionova, and K. V. Runovskii p. 275  abstract

Lacunary Recurrence Relations with Gaps of Length 8 for the Bernoulli and Euler Polynomials

K. A. Mirzoev, and T. A. Safonova p. 279  abstract

Letter to the Editor

O. I. Reinov p. 285  abstract