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JOURNALS // Vestnik Moskovskogo Universiteta. Seriya 1. Matematika. Mekhanika // Archive

Vestnik Moskov. Univ. Ser. 1. Mat. Mekh., 2021 Number 5, Pages 8–19 (Mi vmumm4422)

This article is cited in 5 papers

Mathematics

Topological analysis of an elliptic billiard in a fourth-order potential field

S. E. Pustovoitov

Lomonosov Moscow State University, Faculty of Mechanics and Mathematics

Abstract: A planar billiard is considered in an elliptic domain in the case a polynomial potential of fourth degree acts to a material point. This dynamical system always has the first integral called the total energy which is also a Hamiltonian of this system. Assuming some additional conditions on the potential to guaranty the existence of another first integral which is independent on the Hamiltonian, the system turns out to be a Liouville integrable. The paper presents topological analysis of the corresponding Liouville foliation of this system. Namely, bifurcation diagrams are constructed and Fomenko–Zieschang invariants are calculated.

Key words: Hamiltonian system, integrability, Liouville foliation, Fomenko–Zieschang invariants, bifurcation diagram.

UDC: 517.938.5

Received: 06.07.2020


 English version:
Moscow University Mathematics Bulletin, Moscow University Mеchanics Bulletin, 2021, 76:5, 193–205

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© Steklov Math. Inst. of RAS, 2026