BEGIN:VCALENDAR VERSION:2.0 PRODID:-//132.216.98.100//NONSGML kigkonsult.se iCalcreator 2.20.4// BEGIN:VEVENT UID:20260509T083716EDT-3961k7Uvv0@132.216.98.100 DTSTAMP:20260509T123716Z DESCRIPTION:Title: Characterising local quasi-convexity\n\nAbstract: A hype rbolic group is locally quasi-convex if all of its finitely generated subg roups are quasi-convex. Local quasi-convexity is a very restrictive condit ion which implies several strong subgroup properties such as local hyperbo licity and decidability of the membership problem. In this talk I will ske tch a proof of the fact that cubulated locally quasi-convex hyperbolic gro ups are in fact all virtually free-by-cyclic. I will spend some time expla ining the main ingredients of the proof which mostly come from recent deve lopments in the theory of $L^2$-invariants and free-by-cyclic groups. (bas ed on my appendix to an article of Fisher--Sanchez-Peralta).\n\n \n\nWe wi ll gather in the lounge for teatime after the talk\, and then we will go f or dinner with Marco.\n DTSTART:20260325T200000Z DTEND:20260325T210000Z LOCATION:Room 1104\, Burnside Hall\, CA\, QC\, Montreal\, H3A 0B9\, 805 rue Sherbrooke Ouest SUMMARY:Marco Linton (ICMAT) URL:/mathstat/channels/event/marco-linton-icmat-372073 END:VEVENT END:VCALENDAR