Conference sections Секции конференции Sections in Obninsk: Natural Sciences Education Today and P. Chebyshev’s Scientific Heritage. Number theory and cryptography. Probability theory and statistical theory. Approximation theory. Computational mathematics. Differential equations (nonlinear dynamics, dynamic systems). Wave modeling. Software models and systems. Viscous fluid dynamics. Heat and mass transfer. Physicochemical fluid dynamics in multiphase media. Capillary flow thermohydrodynamics. Hydrodynamic simulation of oil & gas deposits. Simulation models and IT for the oil&gas industry. AI for decision making. Knowledge acquisition, representation, processing, and integration; knowledge bases. Predictive analysis of physical systems. AI for information search, processing, and analysis. Mathematical modeling and design of composite materials and structures. Sections in Surgut: The mechanics of composite materials and structural design. "FUZZINESS" and the complexity of rhird type systems according to W. Weaver. Mathematics and information technology in the oil and gas industry.