Contents

Moscow University Mathematics Bulletin

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Vol. 75, No. 4, 2020

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On Certain Analytically Solvable Problems of Mean Field Games Theory

S. I. Nikulin, O. S. Rozanova p. 139  abstract

Isoenergetic Manifolds of Integrable Billiard Books

I. S. Kharcheva p. 149  abstract

Realization of the Numerical Invariant of the Seifert Fibration of Integrable Systems by Billiards

V. V. Vedyushkina, V. A. Kibkalo p. 161  abstract

On Irreduceability of Boolean Functions with Respect to Commutative Associative Operation

G. V. Safonov, G. V. Bokov, V. B. Kudryavtsev p. 169  abstract

Spectrum of One-Dimensional Natural Vibrations of Layered Medium Consisting of Elastic Material and Viscous Incompressible Fluid

A. S. Shamaev, V. V. Shumilova p. 172  abstract

Ruin Probability in Models with Stochastic Premiums

A. A. Muromskaya p. 177  abstract

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