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 2011 X-WR-CALDESC:Algebraic Geometry Seminar at University of Utah Mathematics Department X-WR-TIMEZONE:America/Denver BEGIN:VEVENT UID:20110128T140000-chenyang-xu@math.utah.edu DTSTART;TZID=America/Denver:20110128T140000 DTEND;TZID=America/Denver:20110128T150000 DTSTAMP:20260819T205508Z SUMMARY:Strong rational connectedness of open surfaces DESCRIPTION:Speaker: Chenyang Xu\, MIT\n\nWe show that the smooth locus of a log del Pezzo surface is not only rationally connected but even strongly rationally connected. This gives an affirmative answer to a conjecture due to Hassestt-Tschinkel. It time permits, I will also talk about applications of this result, namely to prove some … LOCATION:LCB 323 URL:http://math.utah.edu/agseminar/2011-spring/ END:VEVENT BEGIN:VEVENT UID:20110201T153000-tyler-jarvis@math.utah.edu DTSTART;TZID=America/Denver:20110201T153000 DTEND;TZID=America/Denver:20110201T163000 DTSTAMP:20260819T205508Z SUMMARY:Rescheduled: March 1 DESCRIPTION:Speaker: Tyler Jarvis\, BYU\n\n LOCATION:LCB 323 URL:http://math.utah.edu/agseminar/2011-spring/ END:VEVENT BEGIN:VEVENT UID:20110208T153000-daniel-erman@math.utah.edu DTSTART;TZID=America/Denver:20110208T153000 DTEND;TZID=America/Denver:20110208T163000 DTSTAMP:20260819T205508Z SUMMARY:Sextic covers and Gale duality DESCRIPTION:Speaker: Daniel Erman\, Stanford\n\nThe moduli space of n to 1 covers is well understood for n at most 5, and it turns that these moduli spaces are best understood in terms of a rather concrete question: when can the ideal of n points in projective space be generated by the minors of a matrix of linear forms? I will first explain some … LOCATION:LCB 323 URL:http://math.utah.edu/agseminar/2011-spring/ END:VEVENT BEGIN:VEVENT UID:20110222T153000-alex-k%C3%BCronya@math.utah.edu DTSTART;TZID=America/Denver:20110222T153000 DTEND;TZID=America/Denver:20110222T163000 DTSTAMP:20260819T205508Z SUMMARY:Arithmetic properties of volumes of divisors DESCRIPTION:Speaker: Alex Küronya\, Freiburg\n\nThe volume of a Cartier divisor on an irreducible projective variety describes the asymptotic rate of growth of the number of its global sections. As such, it is a non-negative real number, which happens to be rational whenever the section ring of the divisor in question is finitely generated. In a … LOCATION:LCB 323 URL:http://math.utah.edu/agseminar/2011-spring/ END:VEVENT BEGIN:VEVENT UID:20110301T150000-tyler-jarvis@math.utah.edu DTSTART;TZID=America/Denver:20110301T150000 DTEND;TZID=America/Denver:20110301T160000 DTSTAMP:20260819T205508Z SUMMARY:Moduli of Curves with W-structure, Mirror Symmetry, and the Landau-Ginzburg/Calabi-Yau correspondence DESCRIPTION:Speaker: Tyler Jarvis\, BYU\n\nThe moduli of curves with W-structure and their corresponding cohomological field theories form an orbifolded Landau-Ginzburg A-model and are the subject of several beautiful mirror symmetry conjectures. Some of these conjectures have been proved, including the Witten ADE-integrable hierarchies … LOCATION:LCB 323 URL:http://math.utah.edu/agseminar/2011-spring/ END:VEVENT BEGIN:VEVENT UID:20110308T153000-mihai-fulger@math.utah.edu DTSTART;TZID=America/Denver:20110308T153000 DTEND;TZID=America/Denver:20110308T163000 DTSTAMP:20260819T205508Z SUMMARY:Local volumes DESCRIPTION:Speaker: Mihai Fulger\, Univ. of Michigan\n\nGiven a normal variety X of dimension at least two, we fix a point x on it and define a volume over x for any Cartier divisor on an arbitrary birational model dominating X. This volume function can be used to define and study a notion of volume for a normal isolated singularity that is a … LOCATION:LCB 323 URL:http://math.utah.edu/agseminar/2011-spring/ END:VEVENT BEGIN:VEVENT UID:20110315T153000-dusty-ross@math.utah.edu DTSTART;TZID=America/Denver:20110315T153000 DTEND;TZID=America/Denver:20110315T163000 DTSTAMP:20260819T205508Z SUMMARY:Open Gromov-Witten Theory and the Crepant Resolution Conjecture DESCRIPTION:Speaker: Dusty Ross\, Colorado State\n\nThe crepant resolution conjecture relates the GW theory of an orbifold to the GW theory of a crepant resolution. We suspect that the CRC for toric Calabi-Yau threefolds can be approached locally via "open" GW theory. In this talk, I will lay out the foundations for open GW theory of toric CY … LOCATION:LCB 323 URL:http://math.utah.edu/agseminar/2011-spring/ END:VEVENT BEGIN:VEVENT UID:20110316T153000-mart%C3%AD-lahoz@math.utah.edu DTSTART;TZID=America/Denver:20110316T153000 DTEND;TZID=America/Denver:20110316T163000 DTSTAMP:20260819T205508Z SUMMARY:Bicanonical map of higher dimensional irregular varieties DESCRIPTION:Speaker: Martí Lahoz\, Univ. de Barcelona\n\nI will give a numerical criterion for the birationality of the bicanonical map of a smooth irregular variety of arbitrary dimension. The criterion is given in terms of the generic vanishing of the canonical line bundle and related to the properties of the Albanese map of the variety. The study of … LOCATION:LCB 323 URL:http://math.utah.edu/agseminar/2011-spring/ END:VEVENT BEGIN:VEVENT UID:20110329T153000-zach-teitler@math.utah.edu DTSTART;TZID=America/Denver:20110329T153000 DTEND;TZID=America/Denver:20110329T163000 DTSTAMP:20260819T205508Z SUMMARY:TBA DESCRIPTION:Speaker: Zach Teitler\, Boise State\n\n LOCATION:LCB 323 URL:http://math.utah.edu/agseminar/2011-spring/ END:VEVENT BEGIN:VEVENT UID:20110405T153000-stefan-kebekus@math.utah.edu DTSTART;TZID=America/Denver:20110405T153000 DTEND;TZID=America/Denver:20110405T163000 DTSTAMP:20260819T205508Z SUMMARY:Extension properties of differentials and applications I DESCRIPTION:Speaker: Stefan Kebekus\, Freiburg\n\n LOCATION:LCB 323 URL:http://math.utah.edu/agseminar/2011-spring/ END:VEVENT BEGIN:VEVENT UID:20110412T153000-stefan-kebekus@math.utah.edu DTSTART;TZID=America/Denver:20110412T153000 DTEND;TZID=America/Denver:20110412T163000 DTSTAMP:20260819T205508Z SUMMARY:Extension properties of differentials and applications II DESCRIPTION:Speaker: Stefan Kebekus\, Freiburg\n\n LOCATION:LCB 323 URL:http://math.utah.edu/agseminar/2011-spring/ END:VEVENT BEGIN:VEVENT UID:20110415T130000-stefan-kebekus@math.utah.edu DTSTART;TZID=America/Denver:20110415T130000 DTEND;TZID=America/Denver:20110415T140000 DTSTAMP:20260819T205508Z SUMMARY:Extension properties of differentials and applications III DESCRIPTION:Speaker: Stefan Kebekus\, Freiburg\n\n LOCATION:LCB 323 URL:http://math.utah.edu/agseminar/2011-spring/ END:VEVENT BEGIN:VEVENT UID:20110426T153000-jeff-achter@math.utah.edu DTSTART;TZID=America/Denver:20110426T153000 DTEND;TZID=America/Denver:20110426T163000 DTSTAMP:20260819T205508Z SUMMARY:Arithmetic Torelli maps for cubic surfaces and threefolds DESCRIPTION:Speaker: Jeff Achter\, Colorado State\n\nIt has been known for some time that to a complex cubic surface or threefold one can canonically associate a principally polarized. I will explain a construction which works for cubics over an arithmetic base, and discuss what this tells us about the structure of the moduli space of cubic surfaces. LOCATION:LCB 323 URL:http://math.utah.edu/agseminar/2011-spring/ END:VEVENT END:VCALENDAR