BEGIN:VCALENDAR VERSION:2.0 PRODID:-//University of Utah Math Department//Algebraic Geometry Seminar//EN CALSCALE:GREGORIAN METHOD:PUBLISH X-WR-CALNAME:Algebraic Geometry Seminar - Fall 2010 X-WR-CALDESC:Algebraic Geometry Seminar at University of Utah Mathematics Department X-WR-TIMEZONE:America/Denver BEGIN:VEVENT UID:20100831T153000-tommaso-de-fernex@math.utah.edu DTSTART;TZID=America/Denver:20100831T153000 DTEND;TZID=America/Denver:20100831T163000 DTSTAMP:20260819T205508Z SUMMARY:The valuation space of an isolated normal singularity. DESCRIPTION:Speaker: Tommaso de Fernex\, University of Utah\n\nThe Zariski space of a normal variety X encodes all resolutions of X. In joint work with Charles Favre and Sebastien Boucksom, we study positivity properties of divisors on the Zariski space of a normal variety X. In the case X has an isolated singularity, we concurrently work on the full space of … LOCATION:LCB 323 URL:http://math.utah.edu/agseminar/2010-fall/ END:VEVENT BEGIN:VEVENT UID:20100907T153000-jeremy-pecharich@math.utah.edu DTSTART;TZID=America/Denver:20100907T153000 DTEND;TZID=America/Denver:20100907T163000 DTSTAMP:20260819T205508Z SUMMARY:Deformation Quantization of Vector Bundles DESCRIPTION:Speaker: Jeremy Pecharich\, UC Irvine\n\nLet X be an algebraic Poisson variety and Y a smooth coisotropic subvariety with a vector bundle E supported on Y. We give a criterion for when E admits a first/second order deformation as a left module over the first/second order deformation quantization of O_X. We will then show noncommutative … LOCATION:LCB 323 URL:http://math.utah.edu/agseminar/2010-fall/ END:VEVENT BEGIN:VEVENT UID:20100910T153000-olivier-serman@math.utah.edu DTSTART;TZID=America/Denver:20100910T153000 DTEND;TZID=America/Denver:20100910T163000 DTSTAMP:20260819T205508Z SUMMARY:Local factoriality through products and quotients DESCRIPTION:Speaker: Olivier Serman\, Université de Lille 1\n\n(Q-)factoriality of local rings defines a fairly nice kind of singularities. However, to some extent, this notion is not so well behaved. In particular, it is not local in the étale topology. In this talk we show that it is a Zariski-open property. We investigate then how local factoriality is … LOCATION:LCB 323 URL:http://math.utah.edu/agseminar/2010-fall/ END:VEVENT BEGIN:VEVENT UID:20100928T153000-aaron-bertram@math.utah.edu DTSTART;TZID=America/Denver:20100928T153000 DTEND;TZID=America/Denver:20100928T163000 DTSTAMP:20260819T205508Z SUMMARY:Algebraic Geometry in Outer Space DESCRIPTION:Speaker: Aaron Bertram\, University of Utah\n\nClassical Riemann surface theory has an interesting analogue for metric graphs (connected graphs whose edges are assigned lengths) in which the complex numbers are replaced by the tropical numbers and rational functions are replaced by piecewise linear functions with integer slopes. I'll explore … LOCATION:LCB 323 URL:http://math.utah.edu/agseminar/2010-fall/ END:VEVENT BEGIN:VEVENT UID:20101005T153000-christopher-hacon@math.utah.edu DTSTART;TZID=America/Denver:20101005T153000 DTEND;TZID=America/Denver:20101005T163000 DTSTAMP:20260819T205508Z SUMMARY:— DESCRIPTION:Speaker: Christopher Hacon\, University of Utah\n\n LOCATION:LCB 323 URL:http://math.utah.edu/agseminar/2010-fall/ END:VEVENT BEGIN:VEVENT UID:20101019T153000-rob-easton@math.utah.edu DTSTART;TZID=America/Denver:20101019T153000 DTEND;TZID=America/Denver:20101019T163000 DTSTAMP:20260819T205508Z SUMMARY:Good quotients and good moduli spaces DESCRIPTION:Speaker: Rob Easton\, University of Utah\n\nAlgebraic stacks are undeniably technical objects. However, once one comes to terms with their abstract nature (or simply accepts them as black boxes), they become incredibly useful tools. This applies not only to modern (and otherwise intractable) problems, but also to classical questions, … LOCATION:LCB 323 URL:http://math.utah.edu/agseminar/2010-fall/ END:VEVENT BEGIN:VEVENT UID:20101026T153000-kevin-tucker@math.utah.edu DTSTART;TZID=America/Denver:20101026T153000 DTEND;TZID=America/Denver:20101026T163000 DTSTAMP:20260819T205508Z SUMMARY:On the behavior of multiplier ideals and test ideals under finite morphisms in positive characteristic DESCRIPTION:Speaker: Kevin Tucker\, University of Utah\n\nThe multiplier ideal of a Q-divisor on a complex algebraic variety is a fundamental object in the study of higher dimensional birational geometry. However, the behavior of multiplier ideals in positive characteristic can be quite enigmatic. In many cases, a related invariant called the test ideal … LOCATION:LCB 323 URL:http://math.utah.edu/agseminar/2010-fall/ END:VEVENT BEGIN:VEVENT UID:20101130T153000-jos%C3%A9-gonz%C3%A1lez@math.utah.edu DTSTART;TZID=America/Denver:20101130T153000 DTEND;TZID=America/Denver:20101130T163000 DTSTAMP:20260819T205508Z SUMMARY:Cox rings and pseudoeffective cones of projectivized toric vector bundles DESCRIPTION:Speaker: José González\, Univ. of Michigan\n\nProjectivized toric vector bundles are a large class of rational varieties that share some of the finiteness properties of toric varieties and other Mori dream spaces. Hering, Mustata and Payne proved that the Mori cones of these varieties are polyhedral and asked whether their Cox rings are indeed … LOCATION:LCB 323 URL:http://math.utah.edu/agseminar/2010-fall/ END:VEVENT BEGIN:VEVENT UID:20101207T153000-steffen-marcus@math.utah.edu DTSTART;TZID=America/Denver:20101207T153000 DTEND;TZID=America/Denver:20101207T163000 DTSTAMP:20260819T205508Z SUMMARY:Polynomial Families of Tautological Classes on the Moduli Space of Curves DESCRIPTION:Speaker: Steffen Marcus\, Brown University\n\nThe tautological ring is a heavily studied subring of the intersection ring of the moduli space of curves. Simply stated, it is just large enough to contain all the known Chow classes admitting some geometric construction. In this talk, I will describe natural families of tautological classes which … LOCATION:LCB 323 URL:http://math.utah.edu/agseminar/2010-fall/ END:VEVENT BEGIN:VEVENT UID:20101214T153000-david-swinarski@math.utah.edu DTSTART;TZID=America/Denver:20101214T153000 DTEND;TZID=America/Denver:20101214T163000 DTSTAMP:20260819T205508Z SUMMARY:Vector bundles of conformal blocks on M 0,n for sl 2 and sl n DESCRIPTION:Speaker: David Swinarski\, University of Georgia\n\nThe WZW model of conformal field theory yields a vector bundle on the moduli space of pointed curves M 0,n depending on a choice of a Lie algebra, a level, and a set of n weights in the corresponding Weyl alcove. Recently, Fakhruddin gave formulas for the Chern classes of these bundles when g=0 and … LOCATION:LCB 323 URL:http://math.utah.edu/agseminar/2010-fall/ END:VEVENT END:VCALENDAR