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SUMMARY:Isoenergetic degeneracy generically creates meandering invariant t
 ori
DTSTART:20260924T143000Z
DTEND:20260924T160000Z
DTSTAMP:20261015T122600Z
UID:indico-event-3407@indico.obspm.fr
CONTACT:Alain.Albouy@obspm.fr\;2126
DESCRIPTION:Speakers: Illya Koval (ISTA (Autriche))\n\nConsider the set of
  isoenergetically degenerate integrable Hamiltonians with two degrees of f
 reedom. We show that a cusp-generic perturbation of a generic Hamiltonian 
 in this set gives rise to meandering invariant tori - embedded Lagrangian 
 tori which are not graphs. Moreover\, an exponentially dense subset of per
 turbations admits higher order meandering tori\, of all orders from two to
  infinity. These infinite order meanders have an endless nested structure 
 (with Vadim Kaloshin and Yi Pan arXiv:2606.09696).\n\nhttps://indico.obspm
 .fr/event/3407/
LOCATION:Denisse (PARIS)
URL:https://indico.obspm.fr/event/3407/
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