BEGIN:VCALENDAR VERSION:2.0 PRODID:-//132.216.98.100//NONSGML kigkonsult.se iCalcreator 2.20.4// BEGIN:VEVENT UID:20260428T034833EDT-6058PKZecu@132.216.98.100 DTSTAMP:20260428T074833Z DESCRIPTION:Title: Ext algebras of subvarieties and formality theorems\n\nA bstract: In this talk I will present ongoing work with Alex Vitanov\, in w hich we use formal geometry methods and a formality theorem to try to desc ribe the Ext algebra of the sheaf associated with a closed embedding of sm ooth algebraic varieties. I will recall the case of the diagonal embedding \, and then explain the two main tools that we use (formality theorems and formal geometry\, on which no prior knowledge is assumed).\n\nLocation: U QAM PK-5675\n DTSTART:20260422T180000Z DTEND:20260422T190000Z SUMMARY:Damien Calaque (Université de Montpellier) URL:/mathstat/channels/event/damien-calaque-universite -de-montpellier-372641 END:VEVENT END:VCALENDAR