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 - Spring 2010 X-WR-CALDESC:Algebraic Geometry Seminar at University of Utah Mathematics Department X-WR-TIMEZONE:America/Denver BEGIN:VEVENT UID:20100112T153000-ilya-shapiro@math.utah.edu DTSTART;TZID=America/Denver:20100112T153000 DTEND;TZID=America/Denver:20100112T163000 DTSTAMP:20260819T205508Z SUMMARY:Chiral Hecke algebra and representations of affine Kac-Moody Lie algebras DESCRIPTION:Speaker: Ilya Shapiro\, MPIM, Bonn\n\nI will discuss the conjectural role that the Chiral Hecke algebra plays in the local geometric Langlands correspondence. If time permits, I will sketch a possible approach to the unramified case using BRST reduction. LOCATION:LCB 215 URL:http://math.utah.edu/agseminar/2010-spring/ END:VEVENT BEGIN:VEVENT UID:20100119T153000-yu-jong-tzeng@math.utah.edu DTSTART;TZID=America/Denver:20100119T153000 DTEND;TZID=America/Denver:20100119T163000 DTSTAMP:20260819T205508Z SUMMARY:The Universal Formulas for Counting Nodal Curves on Surfaces DESCRIPTION:Speaker: Yu-jong Tzeng\, Stanford University\n\nThe problem of counting nodal curves on algebraic surfaces has been studied since the nineteenth century. On the projective surface, it asks how many curves defined by homogeneous degree d polynomials have only nodes as singularities and pass through points in general position. On K3 surfaces, the … LOCATION:LCB 215 URL:http://math.utah.edu/agseminar/2010-spring/ END:VEVENT BEGIN:VEVENT UID:20100120T153000-chenyang-xu@math.utah.edu DTSTART;TZID=America/Denver:20100120T153000 DTEND;TZID=America/Denver:20100120T163000 DTSTAMP:20260819T205508Z SUMMARY:The automorphic groups of general type varieties DESCRIPTION:Speaker: Chenyang Xu\, MIT\n\n(Joint with C. Hacon and J. McKernan) In this talk, I will sketch a work-in-progress, which is aimed to show that the order of the automorphic group of a general type varietie, which is well-known to be finite, is linearly bounded by the volume of K_X. This is a generalization of the classical … LOCATION:LCB 215 URL:http://math.utah.edu/agseminar/2010-spring/ END:VEVENT BEGIN:VEVENT UID:20100126T153000-speaker@math.utah.edu DTSTART;TZID=America/Denver:20100126T153000 DTEND;TZID=America/Denver:20100126T163000 DTSTAMP:20260819T205508Z SUMMARY:No seminar today DESCRIPTION:Speaker: speaker\n\n LOCATION:LCB 215 URL:http://math.utah.edu/agseminar/2010-spring/ END:VEVENT BEGIN:VEVENT UID:20100202T153000-y.p.-lee@math.utah.edu DTSTART;TZID=America/Denver:20100202T153000 DTEND;TZID=America/Denver:20100202T163000 DTSTAMP:20260819T205508Z SUMMARY:Algebraic Cobordism of Bundles on Varieties DESCRIPTION:Speaker: Y.P. Lee\n\n LOCATION:LCB 215 URL:http://math.utah.edu/agseminar/2010-spring/ END:VEVENT BEGIN:VEVENT UID:20100209T153000-speaker@math.utah.edu DTSTART;TZID=America/Denver:20100209T153000 DTEND;TZID=America/Denver:20100209T163000 DTSTAMP:20260819T205508Z SUMMARY:No seminar today DESCRIPTION:Speaker: speaker\n\n LOCATION:LCB 215 URL:http://math.utah.edu/agseminar/2010-spring/ END:VEVENT BEGIN:VEVENT UID:20100212T153000-hai-long-dao@math.utah.edu DTSTART;TZID=America/Denver:20100212T153000 DTEND;TZID=America/Denver:20100212T163000 DTSTAMP:20260819T205508Z SUMMARY:Non-commutative desingularizations and cluster-tilting objects over Cohen-Macaulay rings DESCRIPTION:Speaker: Hai Long Dao\, University of Kansas\n\nLet M be a reflexive module over a Cohen-Macaulay local ring R and A = Hom(M,M). If A has finite global dimension, then it has been proposed to serve as a non-commutative analogue of desingularizations of Spec(R). In this talk, we will survey what is known about when such module M exists, and … LOCATION:LCB 215 URL:http://math.utah.edu/agseminar/2010-spring/ END:VEVENT BEGIN:VEVENT UID:20100216T153000-speaker@math.utah.edu DTSTART;TZID=America/Denver:20100216T153000 DTEND;TZID=America/Denver:20100216T163000 DTSTAMP:20260819T205508Z SUMMARY:No seminar today DESCRIPTION:Speaker: speaker\n\n LOCATION:LCB 215 URL:http://math.utah.edu/agseminar/2010-spring/ END:VEVENT BEGIN:VEVENT UID:20100224T163000-s%C3%A9bastien-boucksom@math.utah.edu DTSTART;TZID=America/Denver:20100224T163000 DTEND;TZID=America/Denver:20100224T173000 DTSTAMP:20260819T205508Z SUMMARY:Filtered linear series and Okounkov bodies DESCRIPTION:Speaker: Sébastien Boucksom\, CNRS, Paris\n\nI will present joint work with Huayi Chen where we associate to certain filtrations on the ring of sections of a big line bundle on a projective variety a concave function on the Okounkov body of the line bundle, in such a way that the image of the Lebesgue measure under this function describes the … LOCATION:LCB 215 URL:http://math.utah.edu/agseminar/2010-spring/ END:VEVENT BEGIN:VEVENT UID:20100302T153000-aaron-bertram@math.utah.edu DTSTART;TZID=America/Denver:20100302T153000 DTEND;TZID=America/Denver:20100302T163000 DTSTAMP:20260819T205508Z SUMMARY:Quiver moduli are Bridgeland moduli on the projective plane DESCRIPTION:Speaker: Aaron Bertram\n\nLe Potier constructed the moduli spaces of stable torsion-free sheaves on P^2 by converting them (via the Beilinson construction) into representations of a quiver. This conversion generalizes to allow geometric invariant theory constructions of all moduli spaces of Bridgeland-stable objects on P^2. … LOCATION:LCB 215 URL:http://math.utah.edu/agseminar/2010-spring/ END:VEVENT BEGIN:VEVENT UID:20100309T153000-justin-sawon@math.utah.edu DTSTART;TZID=America/Denver:20100309T153000 DTEND;TZID=America/Denver:20100309T163000 DTSTAMP:20260819T205508Z SUMMARY:Classifying maps of Lagrangian fibrations DESCRIPTION:Speaker: Justin Sawon\, University of North Carolina\n\nFibrations on holomorphic symplectic manifolds are extremely restricted. Matsushita proved that the fibres must be complex tori which are Lagrangian with respect to the holomorphic symplectic form. When the total space X is projective, Hwang proved that the base of a fibration must be projective … LOCATION:LCB 215 URL:http://math.utah.edu/agseminar/2010-spring/ END:VEVENT BEGIN:VEVENT UID:20100310T140000-arend-bayer@math.utah.edu DTSTART;TZID=America/Denver:20100310T140000 DTEND;TZID=America/Denver:20100310T150000 DTSTAMP:20260819T205508Z SUMMARY:Stability conditions for the local projective plane DESCRIPTION:Speaker: Arend Bayer\, University of Connecticut\n\nI will talk about the space of stability conditions for the total space of the cotangent bundle on P^2. Its geometry is related to classical questions on Chern classes of stable vector bundles P^2, to the modular group Gamma_1(3), and, via mirror symmetry, to the moduli space of elliptic curves with … LOCATION:LCB 215 URL:http://math.utah.edu/agseminar/2010-spring/ END:VEVENT BEGIN:VEVENT UID:20100316T153000-ching-jui-lai@math.utah.edu DTSTART;TZID=America/Denver:20100316T153000 DTEND;TZID=America/Denver:20100316T163000 DTSTAMP:20260819T205508Z SUMMARY:Varieties fibered by good minimal models DESCRIPTION:Speaker: Ching-Jui Lai\n\n LOCATION:LCB 215 URL:http://math.utah.edu/agseminar/2010-spring/ END:VEVENT BEGIN:VEVENT UID:20100330T153000-luis-hern%C3%A1ndez-lamoneda@math.utah.edu DTSTART;TZID=America/Denver:20100330T153000 DTEND;TZID=America/Denver:20100330T163000 DTSTAMP:20260819T205508Z SUMMARY:Curvature restricitions for (almost-) complex manifolds DESCRIPTION:Speaker: Luis Hernández Lamoneda\, CIMAT, Guanajuato, Mexico\n\nConsider the following open questions: -Is S^6 a complex manifold? -If a compact M admits a hyperbolic structure, can it be also a complex manifold? Perhaps the answer to both questions is no. And perhaps the reason it is so is because these manifolds admit metrics of constant non-zero curvature. In … LOCATION:LCB 215 URL:http://math.utah.edu/agseminar/2010-spring/ END:VEVENT BEGIN:VEVENT UID:20100406T153000-dustin-cartwright@math.utah.edu DTSTART;TZID=America/Denver:20100406T153000 DTEND;TZID=America/Denver:20100406T163000 DTSTAMP:20260819T205508Z SUMMARY:Mustafin Varieties DESCRIPTION:Speaker: Dustin Cartwright\, University of California, Berkeley\n\nA Mustafin variety is a degeneration of projective space induced by a point configuration in a Bruhat-Tits building. The special fiber is reduced and Cohen-Macaulay, and its irreducible components form interesting combinatorial patterns. For configurations that lie in one apartment, these patterns … LOCATION:LCB 215 URL:http://math.utah.edu/agseminar/2010-spring/ END:VEVENT BEGIN:VEVENT UID:20100413T153000-rob-easton@math.utah.edu DTSTART;TZID=America/Denver:20100413T153000 DTEND;TZID=America/Denver:20100413T163000 DTSTAMP:20260819T205508Z SUMMARY:Riemann-Roch Theorem for graphs and tropical curves DESCRIPTION:Speaker: Rob Easton\n\n LOCATION:LCB 215 URL:http://math.utah.edu/agseminar/2010-spring/ END:VEVENT BEGIN:VEVENT UID:20100420T153000-stefano-urbinati@math.utah.edu DTSTART;TZID=America/Denver:20100420T153000 DTEND;TZID=America/Denver:20100420T163000 DTSTAMP:20260819T205508Z SUMMARY:Discrepancies on non-Q-Gorenstein varieties DESCRIPTION:Speaker: Stefano Urbinati\n\nI am going to give an example of a non-Q-Gorenstein variety which is canonical but not klt, and whose canonical divisor has an irrational valuation. I will also give an example of an irrational jumping number and I will prove that there are no accumulation points for the jumping numbers of normal … LOCATION:LCB 215 URL:http://math.utah.edu/agseminar/2010-spring/ END:VEVENT END:VCALENDAR