BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//wp-events-plugin.com//7.2.3.1//EN
TZID:Europe/Paris
X-WR-TIMEZONE:Europe/Paris
BEGIN:VEVENT
UID:6593@i2m.univ-amu.fr
DTSTART;TZID=Europe/Paris:20201218T110000
DTEND;TZID=Europe/Paris:20201218T120000
DTSTAMP:20241207T134908Z
URL:https://www.i2m.univ-amu.fr/evenements/large-scale-geometry-of-the-sad
 dle-connection-graph-anja-randecker/
SUMMARY:Anja Randecker (Heidelberg University): Large-scale geometry of the
  saddle connection graph
DESCRIPTION:Anja Randecker: For a half-translation surface\, the saddle con
 nection graph is the induced subgraph of the arc graph where vertices are 
 saddle connections.\nOn the one hand\, saddle connection graphs are rigid 
 in the sense that every isometry is induced by an affine diffeomorphism of
  the underlying half-translation surface.\nOn the other hand\, all saddle 
 connection graphs are uniformly quasi-isometric to the infinite valence tr
 ee\, so they are not distinguishable from the coarse geometry point of vie
 w.\nIn this talk\, I will focus on the coarse geometry: I will explain the
  arguments for the uniform quasi-isometry and will hint at how the (coarse
  concept) Gromov boundary can still hold valuable insight.\nThe results ca
 n be found in arXiv:2011.12975 which is joint work with Valentina Disarlo\
 , Huiping Pan\, and Robert Tang.\n\n\n\n\n\n\n\nThe ladder paths from the 
 saddle connection with slope −1/4 to the one with slope 2 are the two pa
 ths\nthat bound the gray polygon (figure 7\, p15).\n\n\n\n[su_spacer size=
 "10"]Sur Zoom :https://univ-amu-fr.zoom.us/j/8744199276?pwd=NnhQdUd0VGxTWk
 FSdEYwUExrbjZUUT09Meeting ID: 874 419 9276
ATTACH;FMTTYPE=image/jpeg:https://www.i2m.univ-amu.fr/wp-content/uploads/2
 020/11/Anja_Randecker.jpg
CATEGORIES:Séminaire,Hybrid,Rauzy
LOCATION:St Charles - FRUMAM\, 3\, place Victor Hugo\, Marseille\, 13003\, 
 France
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=3\, place Victor Hugo\, Mar
 seille\, 13003\, France;X-APPLE-RADIUS=100;X-TITLE=St Charles - FRUMAM:geo
 :0,0
END:VEVENT
BEGIN:VTIMEZONE
TZID:Europe/Paris
X-LIC-LOCATION:Europe/Paris
BEGIN:STANDARD
DTSTART:20201025T020000
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
TZNAME:CET
END:STANDARD
END:VTIMEZONE
END:VCALENDAR