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SUMMARY:Stefan Nemirovski (Steklov Mathematical Institute and Ruhr Univers
 ity Bochum)
DTSTART:20230621T111000Z
DTEND:20230621T123000Z
DTSTAMP:20260423T022711Z
UID:GDS/88
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/GDS/88/">Leg
 endrian links and déjà vu moments</a>\nby Stefan Nemirovski (Steklov Mat
 hematical Institute and Ruhr University Bochum) as part of Geometry and Dy
 namics seminar\n\n\nAbstract\nLegendrian links in the space of null geodes
 ics of a spacetime\ncan be used to detect "déjà vu moments"\, i.e. diffe
 rent instances\nat which an observer receives the same light ray. In the t
 alk\,\nI'll discuss the relevant class of Legendrian links and some\nensui
 ng open problems.\n
LOCATION:https://researchseminars.org/talk/GDS/88/
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