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 2019 X-WR-CALDESC:Algebraic Geometry Seminar at University of Utah Mathematics Department X-WR-TIMEZONE:America/Denver BEGIN:VEVENT UID:20190211T153000-andreas-malmendier@math.utah.edu DTSTART;TZID=America/Denver:20190211T153000 DTEND;TZID=America/Denver:20190211T163000 DTSTAMP:20260819T205508Z SUMMARY:Configurations of six-lines, string dualities, and modular forms DESCRIPTION:Speaker: Andreas Malmendier\n\nA smooth K3 surface obtained as the blow-up of the quotient of a four-torus by the involution automorphism at all 16 fixed points is called a Kummer surface. Algebraic Kummer surfaces obtained from abelian varieties provide a fascinating arena for string compactification and string dualities as they … LOCATION:LCB 222 URL:http://math.utah.edu/agseminar/2019-spring/ END:VEVENT BEGIN:VEVENT UID:20190219T153000-eduardo-gonzalez@math.utah.edu DTSTART;TZID=America/Denver:20190219T153000 DTEND;TZID=America/Denver:20190219T163000 DTSTAMP:20260819T205508Z SUMMARY:Stratifications in gauged Gromov-Witten theory DESCRIPTION:Speaker: Eduardo Gonzalez\, University of Massachusetts Boston\n\nLet G be a reductive group and X be a smooth projective G-variety. In classical geometric invariant theory (GIT), there are stratifications of X that can be used to understand the geometry of the GIT quotients X//G and their dependence on choices. In this talk, after introducing basic theory, I will … LOCATION:LCB 222 URL:http://math.utah.edu/agseminar/2019-spring/ END:VEVENT BEGIN:VEVENT UID:20190220T150000-felix-janda@math.utah.edu DTSTART;TZID=America/Denver:20190220T150000 DTEND;TZID=America/Denver:20190220T160000 DTSTAMP:20260819T205508Z SUMMARY:Logarithmic GLSM moduli spaces DESCRIPTION:Speaker: Felix Janda\, University of Michigan\n\nUnderstanding the structure of Gromov-Witten invariants of quintic threefolds is an important problem in enumerative geometry which has been studied since the early 90s. Together with Q. Chen, Y. Ruan and A. Sauvaget, we construct new moduli spaces that we call "logarithmic GLSM moduli spaces". One … LOCATION:LCB 222 URL:http://math.utah.edu/agseminar/2019-spring/ END:VEVENT BEGIN:VEVENT UID:20190305T153000-linquan-ma@math.utah.edu DTSTART;TZID=America/Denver:20190305T153000 DTEND;TZID=America/Denver:20190305T163000 DTSTAMP:20260819T205508Z SUMMARY:Homological conjectures, perfectoid spaces, and singularities in mixed characteristic DESCRIPTION:Speaker: Linquan Ma\, Purdue University\n\nThe homological conjectures have been a focus of research in commutative algebra since 1960s. They concern a number of interrelated conjectures concerning homological properties of commutative rings to their internal ring structures. These conjectures had largely been resolved for rings that contain … LOCATION:LCB 222 URL:http://math.utah.edu/agseminar/2019-spring/ END:VEVENT BEGIN:VEVENT UID:20190312T153000-speaker@math.utah.edu DTSTART;TZID=America/Denver:20190312T153000 DTEND;TZID=America/Denver:20190312T163000 DTSTAMP:20260819T205508Z SUMMARY:N/A DESCRIPTION:Speaker: speaker\n\n LOCATION:LCB 222 URL:http://math.utah.edu/agseminar/2019-spring/ END:VEVENT BEGIN:VEVENT UID:20190319T153000-jonathan-campbell@math.utah.edu DTSTART;TZID=America/Denver:20190319T153000 DTEND;TZID=America/Denver:20190319T163000 DTSTAMP:20260819T205508Z SUMMARY:Bicategorical Duality Theory with Applications to Topology and Algebra DESCRIPTION:Speaker: Jonathan Campbell\, Vanderbilt University\n\nIn this talk I'll describe how a bicategorical gadget, called the shadow, allows one to extract many interesting algebraic and topological invariants. For example, in algebraic bicategories, one easily recovers group characters, and in certain topological categories, one recovers the Lefschetz … LOCATION:LCB 222 URL:http://math.utah.edu/agseminar/2019-spring/ END:VEVENT BEGIN:VEVENT UID:20190326T153000-jihao-liu@math.utah.edu DTSTART;TZID=America/Denver:20190326T153000 DTEND;TZID=America/Denver:20190326T163000 DTSTAMP:20260819T205508Z SUMMARY:Boundedness of complements for pairs with DCC coefficients DESCRIPTION:Speaker: Jihao Liu\, University of Utah\n\nShokurov introduced the theory of complements while he investigated log flips of threefold. The theory is further developed by Prokhorov-Shokurov and Birkar. As one of the key steps in the proof of BAB conjecture, Birkar showed a conjecture of Shokurov, i.e., the existence of n-complements for Fano … LOCATION:LCB 222 URL:http://math.utah.edu/agseminar/2019-spring/ END:VEVENT BEGIN:VEVENT UID:20190402T153000-hsian-hua-tseng@math.utah.edu DTSTART;TZID=America/Denver:20190402T153000 DTEND;TZID=America/Denver:20190402T163000 DTSTAMP:20260819T205508Z SUMMARY:Relative and orbifold Gromov-Witten invariants DESCRIPTION:Speaker: Hsian-Hua Tseng\, Ohio State University\n\nFor a smooth projective variety X containing a smooth irreducible divisor D, the question of counting curves in X with prescribed contact conditions along D is a classical one in enumerative geometry. In more modern approaches to this question, there are two ways to define these counts: as … LOCATION:LCB 222 URL:http://math.utah.edu/agseminar/2019-spring/ END:VEVENT BEGIN:VEVENT UID:20190430T153000-speaker@math.utah.edu DTSTART;TZID=America/Denver:20190430T153000 DTEND;TZID=America/Denver:20190430T163000 DTSTAMP:20260819T205508Z SUMMARY:N/A DESCRIPTION:Speaker: speaker\n\n LOCATION:LCB 222 URL:http://math.utah.edu/agseminar/2019-spring/ END:VEVENT END:VCALENDAR