Geodesic
Realization of numeriсal invariant of the Siefert bundle of integrable systems by billiards
Vestnik Moskovskogo universiteta. Matematika, mehanika, no. 4 (2020), pp. 22-28 
V. V. Vedyushkina; V. A. Kibkalo. Realization of numeriсal invariant of the Siefert bundle of integrable systems by billiards. Vestnik Moskovskogo universiteta. Matematika, mehanika, no. 4 (2020), pp. 22-28. http://geodesic.mathdoc.fr/item/VMUMM_2020_4_a2/
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Voir la notice de l'article provenant de la source Math-Net.Ru

A local case of A. Fomenko conjecture on possibility of realization of a Liouville foliation with arbitrary topological Fomenko–Zieschang invariant (which is a graph with numerical marks) is discussed. In the class of billiard books, a foliation with arbitrary value of one integer mark (that corresponds to Euler class of one Seifert submanifold) was realized.

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