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UID:0-831@lptms.universite-paris-saclay.fr
DTSTART;TZID=Europe/Paris:20220623T110000
DTEND;TZID=Europe/Paris:20220623T120000
DTSTAMP:20220616T072409Z
URL:https://www.lptms.universite-paris-saclay.fr/seminars/seminaire-du-lpt
 ms-marina-gonchenko-upc/
SUMMARY:Séminaire du LPTMS : Marina Gonchenko (Universitat de Barcelona) -
  Salle des séminaires du FAST et du LPTMS\, bâtiment Pascal n°530 - 23 
 Juin 22 11:00
DESCRIPTION:Homoclinic phenomena in conservative dynamical systems\nMarina 
 Gonchenko (Universitat de Barcelona)\n\n**Unusual day**\n\nhttps://cnrs.zo
 om.us/j/92337937169?pwd=SlFBdXNyV2hYL0VkbHpxa2lOMENMQT09\nMeeting ID: 923 
 3793 7169\nPasscode: ZSG43P\n \nWe study homoclinic orbits in conservative
  dynamical systems. Such orbits\, called homoclinic by Poincaré\, are of 
 great interest in the theory of dynamical systems since their presence imp
 lies chaotic dynamics. We study area-preserving maps (APMs) with a nontran
 sversal homoclinic orbit (homoclinic tangency) to a saddle fixed point and
  we prove the existence of cascades of elliptic periodic points near the g
 iven homoclinic trajectory. We also study the phenomenon of the coexistenc
 e of infinitely many periodic orbits of different large periods (called gl
 obal resonance). We consider the related problems in different types of AP
 Ms (symplectic maps and non-orientable APMs) with quadratic or cubic tange
 ncies. 
CATEGORIES:seminars
LOCATION:Salle des séminaires du FAST et du LPTMS\, bâtiment Pascal n°53
 0\, rue André Riviere\, Orsay\, 91405\, France
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=rue André Riviere\, Orsay\
 , 91405\, France;X-APPLE-RADIUS=100;X-TITLE=Salle des séminaires du FAST 
 et du LPTMS\, bâtiment Pascal n°530:geo:0,0
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