BEGIN:VCALENDAR VERSION:2.0 PRODID:researchseminars.org CALSCALE:GREGORIAN X-WR-CALNAME:researchseminars.org BEGIN:VEVENT SUMMARY:Alexandra Edletzberger (Vienna) DTSTART:20220329T130000Z DTEND:20220329T150000Z DTSTAMP:20260423T041009Z UID:WienGAGT/12 DESCRIPTION:Title: Quasi-Isometries for certain Right-Angled Coxeter Groups\nby Alexand ra Edletzberger (Vienna) as part of Vienna Geometry and Analysis on Groups Seminar\n\n\nAbstract\nWe will introduce a construction of a specific gra ph of groups\, the so-called JSJ tree of cylinders\, for certain right-ang led Coxeter groups (RACGs) in terms of the defining graph.\nWe will use th is as a tool in the hunt for a solution to the Quasi-Isometry Problem of c ertain RACGs\, because if there is a quasi-isometry between two RACGs\, th ere is an induced tree isomorphism between the respective JSJ trees of cyl inders. In particular\, this tree isomorphism preserves some additional st ructure of the JSJ tree of cylinders. With this fact at hand we can distin guish RACGs up to quasi-isometry.\nAdditionally\, we explain that in certa in cases this structure preserving tree isomorphism even provides a comple te quasi-isometry invariant.\n LOCATION:https://researchseminars.org/talk/WienGAGT/12/ END:VEVENT END:VCALENDAR