Proceedings of the 20 International Saratov Winter School "Contemporary Problems of Function Theory and Their Applications", Saratov, January 28 — February 1, 2020. Part 1
On the existence of a positive solution to a boundary-value problem for a second-order nonlinear ordinary differential equation
3
Advanced algorithm for stability analysis of combined dynamical systems
7
Frames in Walsh analysis, Hadamard matrices, and uniformly distributed sets
17
Spectral properties of one infinite tridiagonal matrix
31
Fourier transform and continuity of functions of bounded $\Phi$ -variation
43
Application of generalized Bers degrees, the matrix method, and the Fourier method for solving the nonstationary heat equation in a multilayer medium
50
On the inversion of the Valiant function of the rank rigidity of a matrix
60
Generalized d'Alembert formula for the telegraph equation
66
Differential properties of mappings with $s$ -average characteristic
80
The $l$ -moment problem and optimal control for systems modeled by fractional equations with multiparameter and “nonsingular” derivatives
86
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