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UID:20251122T060742EST-4567A5ebrT@132.216.98.100
DTSTAMP:20251122T110742Z
DESCRIPTION:Topology of infinite translation surfaces\n\nClassical translat
 ion surfaces can be obtained from gluing finitely many polygons along para
 llel edges of the same length. In recent years\, people have asked what ha
 ppens when you glue infinitely instead of finitely many polygons. From tha
 t question the field of infinite translation surfaces has evolved. It turn
 s out that the behaviour of infinite translation surfaces is in many regar
 ds very different and more diverse than in the classical case. This includ
 es that for classical translation surfaces\, we have a Gauß–Bonnet formula
  which relates the cone angle of the singularities (coming from the corner
 s of the polygons) to the genus of the surface. For infinite translation s
 urfaces\, we might observe so-called wild singularities for which the noti
 on of cone angle is not applicable any more. In this talk\, I will explain
  that there is still a relation between the geometry and the topology of i
 nfinite translation surfaces in the spirit of a Gauß-Bonnet formula. In fa
 ct\, under some weak conditions\, the existence of a wild singularity impl
 ies infinite genus.\n\n \n
DTSTART:20171206T200000Z
DTEND:20171206T210000Z
LOCATION:Room 920\, Burnside Hall\, CA\, QC\, Montreal\, H3A 0B9\, 805 rue 
 Sherbrooke Ouest
SUMMARY:Anja Randecker\, University of Toronto
URL:/mathstat/channels/event/anja-randecker-university
 -toronto-283165
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