BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//132.216.98.100//NONSGML kigkonsult.se iCalcreator 2.20.4//
BEGIN:VEVENT
UID:20250712T050904EDT-5705bmvsa2@132.216.98.100
DTSTAMP:20250712T090904Z
DESCRIPTION:Title: Spectral invariants and Birkhoff Billiards\n\nAbstract: 
 \n\nConsider a smooth\, bounded\, strictly convex domain in the plane. The
 re are two games one can play. The classical one is billiards\, in which a
  billiard ball orbits around the domain and reflects elastically at the bo
 undary. The “quantum” analogue involves the study of wave propagation in t
 he domain and understanding the frequencies at which such waves oscillate.
  In this talk\, we discuss recent progress on the inverse spectral problem
  of determining a billiard table from its Laplace spectrum. In particular\
 , we introduce a new class of spectral invariants for a generic class of b
 illiard tables obtained from an explicit Hadamard-Riesz type parametrix fo
 r the wave propagator\, microlocally near geodesic loops of small rotation
  number. These same techniques also allow us to prove (infinitesimal) Robi
 n spectral rigidity of the ellipse\, when both the boundary and boundary c
 onditions are allowed to deform simultaneously. Finally\, we mention ongoi
 ng work together with Vadim Kaloshin to cancel singularities in the wave t
 race for special types of domains.\n\n \n\nFor more information on the Zoo
 m meeting please contact dmitry.jakobson [at] mcgill.ca\n\n \n
DTSTART:20210212T160000Z
DTEND:20210212T170000Z
SUMMARY:Amir Vig (CRM\, ���ϲ�����)
URL:/mathstat/channels/event/amir-vig-crm-mcgill-32829
 0
END:VEVENT
END:VCALENDAR