Itogi Nauki i Tekhniki. Sovrem. Mat. Pril. Temat. Obz., 2023, Volume 229

JOURNALS // Itogi Nauki i Tekhniki. Sovremennaya Matematika i ee Prilozheniya. Tematicheskie Obzory // Archive

2023, Volume 229

Contents

Proceedings of the Voronezh international winter mathematical school "Modern methods of function theory and related problems", Voronezh, January 27 - February 1, 2023, Part 3

	Sessions of the Workshop of the Mathematics and Mechanics Department of the Lomonosov Moscow State University, “Urgent Problems of Geometry and Mechanics” named after V. V. Trofimov D. V. Georgievskii, M. V. Shamolin		3
	On bounded difference operators with involution A. G. Baskakov, G. V. Garkavenko, N. B. Uskova		12
	Necessary and sufficient conditions for the stability of systems of ordinary differential equations S. G. Bulanov		22
	New identities from enumeration of graphs V. A. Voblyi		33
	Solutions of some systems of functional equations related to complex, double, and dual numbers V. A. Kyrov		37
	Relationships between the best uniform polynomial approximations of functions and their even and odd prolongations T. S. Mardvilko		47
	Structure of the essential spectrum and discrete spectrum of the energy operator of four-electron systems in the impurity Hubbard model. The third triplet state S. M. Tashpulatov, R. T. Parmanova		53
	Generalized mixed problem for the simplest wave equation and its applications A. P. Khromov		83
	Tensor invariants of geodesic, potential and dissipative systems. III. Systems on tangents bundles of four-dimensional manifolds M. V. Shamolin		90
	Optimization of thermal processes in a nonlocal problem with a redefinition function under an integral condition T. K. Yuldashev, G. K. Abdurakhmanova		120