BEGIN:VCALENDAR VERSION:2.0 PRODID:researchseminars.org CALSCALE:GREGORIAN X-WR-CALNAME:researchseminars.org BEGIN:VEVENT SUMMARY:Sukmoon Huh (Sungkyunkwan Universityok) DTSTART:20220127T100000Z DTEND:20220127T110000Z DTSTAMP:20260423T053137Z UID:ZAG/181 DESCRIPTION:Title: To relli problem on logarithmic sheaves\nby Sukmoon Huh (Sungkyunkwan Uni versityok) as part of ZAG (Zoom Algebraic Geometry) seminar\n\n\nAbstract\ nThe logarithmic sheaf associated to a reduced divisor\, is the sheaf of d ifferential 1-forms with logarithmic poles along the divisor\, and it was introduced by P. Deligne to define a mixed Hodge structure on the compleme nt of the divisor. There have been a great deal of study on this subject\, and one of the questions is whether the sheaf determines the divisor or n ot\, which we call the Torelli problem. In case of general hyperplane arra ngements on projective spaces\, I. Dolgachev and M. Kapranov gave a positi ve answer to the Torelli problem when the number of hyperplanes is big eno ugh\, and then later J. Valles gave a complete answer. In this talk we giv e several other results on the Torelli problem\, and report our recent res ult\, in which we introduce two different approachs to have a positive ans wer on the problem. This is a joint work with S. Marchesi\, J. Pons-Llopis and J. Valles.\n LOCATION:https://researchseminars.org/talk/ZAG/181/ END:VEVENT END:VCALENDAR