BEGIN:VCALENDAR VERSION:2.0 PRODID:researchseminars.org CALSCALE:GREGORIAN X-WR-CALNAME:researchseminars.org BEGIN:VEVENT SUMMARY:Victoria Hoskins (Radboud University Nijmegen) DTSTART:20201209T130000Z DTEND:20201209T140000Z DTSTAMP:20260423T040228Z UID:EDGE2020/7 DESCRIPTION:Title: Constructing new moduli space via non-reductive geometric invariant theor y\nby Victoria Hoskins (Radboud University Nijmegen) as part of EDGE 2 020 (online)\n\n\nAbstract\nThere are some moduli problems where non-reduc tive groups naturally appear: for example\, moduli of hypersurfaces in tor ic varieties\, which may have non-reductive automorphism groups\, and modu li of certain unstable objects\, such as vector bundles of fixed Harder-Na rasimhan type\, where there is naturally a parabolic group action. In this talk\, I will give an introduction to non-reductive GIT and explain how t o construct quotients when the unipotent radical is 'graded' by a copy of the multiplicative group. I will then report on joint work in progress wit h G. Berczi\, J. Jackson and F. Kirwan on the construction of moduli space s of sheaves of fixed Harder-Narasimhan type.\n LOCATION:https://researchseminars.org/talk/EDGE2020/7/ END:VEVENT END:VCALENDAR