Infinitesimally stable and unstable singularities of 2-degrees of freedom completely integrable systems

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作者
A. Giacobbe
机构
[1] Università di Padova,Dipartimento di Matematica Pura e Applicata
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singularities; completely integrable systems; bifurcation diagrams; infinitesimal deformations; cusps; local normal forms; 55R55; 37J35;
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摘要
In this article we give a list of 10 rank zero and 6 rank one singularities of 2-degrees of freedom completely integrable systems. Among such singularities, 14 are the singularities that satisfy a non-vanishing condition on the quadratic part, the remaining 2 are rank 1 singularities that play a role in the geometry of completely integrable systems with fractional monodromy. We describe which of them are stable and which are unstable under infinitesimal completely integrable deformations of the system.
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页码:717 / 731
页数:14
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