Tangential Center Problem for a Family of Non-generic Hamiltonians

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TitreTangential Center Problem for a Family of Non-generic Hamiltonians
Type de publicationJournal Article
Year of Publication2017
AuteursPontigo-Herrera J
JournalJOURNAL OF DYNAMICAL AND CONTROL SYSTEMS
Volume23
Pagination597-622
Date PublishedJUL
Type of ArticleArticle
ISSN1079-2724
Mots-clésAbelian integrals, monodromy, Tangential center problem
Résumé

The tangential center problem was solved by Yu. S. Ilyashenko in the generic case Mat Sbornik (New Series), 78, 120, 3,360-373, (1969). With the aim of having well-understood models of non-generic Hamiltonians, we consider here a family of non-generic Hamiltonians, whose Hamiltonian is of the form , where f (j) are real polynomials of degree 1. For this family, the genericity assumption of transversality at infinity fails and the coincidence of the critical values for different critical points is allowed. We consider some geometric conditions on these polynomials in order to compute the orbit under monodromy of their vanishing cycles. Under those conditions, we provide a solution of the tangential center problem for this family.

DOI10.1007/s10883-016-9343-6