BEGIN:VCALENDAR VERSION:2.0 PRODID:-//132.216.98.100//NONSGML kigkonsult.se iCalcreator 2.20.4// BEGIN:VEVENT UID:20250715T063214EDT-1168gCbtu0@132.216.98.100 DTSTAMP:20250715T103214Z DESCRIPTION:Title: Mapping class groups that do not virtually surject to th e integers.\n\nAbstract: Mapping class groups of surfaces of genus at leas t 3 are perfect\, but their finite-index subgroups need not be--they can h ave non-trivial abelianizations. A well-known conjecture of Ivanov states that a finite-index subgroup of a mapping class group of a sufficiently hi gh genus has finite abelianization. We will discuss a proof of this conjec ture\, which goes through an equivalent representation-theoretic form of t he conjecture due to Putman and Wieland.\n\nLink: https://mcgill.zoom.us/j /98910726246?pwd=VHlzTzdTZGtqcHVuWGNKdys4d0FzQT09\n\nZoom ID: 989 1072 624 6\n Password: delta\n DTSTART:20201021T190000Z DTEND:20201021T200000Z SUMMARY:Asaf Hadari (University of Hawaii at Manoa) URL:/mathstat/channels/event/asaf-hadari-university-ha waii-manoa-325556 END:VEVENT END:VCALENDAR