## Columbia Algebraic Geometry Seminar## Fall 2019 |
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The Columbia Algebraic Geometry Seminar takes place on Fridays at 3:30 pm in 417 Mathematics Hall on the Columbia campus. All are welcome. Tea is served at 3 pm in 508 Mathematics Hall.

The seminar is organized by Johan de Jong and Will Sawin.

Click on the title of a talk for the abstract (if available).

September 6 | Rachel Webb | University of Michigan | Virtual Cycle on the Moduli Space of Maps to a Complete Intersection |

September 13 | Dan Abramovich | Brown University | Resolution in characteristic 0 using weighted blowing up |

September 20 | No seminar | AGNES at Boston College | |

September 27 | Akash Sengupta | Columbia University | The Fujita invariant and the thin set in Manin's conjecture |

October 4 | Will Chen | Columbia University | Nonabelian level structures for elliptic curves and noncongruence modular formss |

October 11 | Jacob Lurie | Institute for Advanced Study | A Riemann-Hilbert Correspondence in Characteristic p |

October 18 | Innna Zakharevich | Cornell University | The Dehn complex: scissors congruence, K-theory, and regulators |

October 25 | Daniel Huybrechts | University of Bonn | Arithmetic aspects of twistor spaces |

November 1 | Hélène Esnault | Free Universitat Berlin / Institute for Advanced Study | Special subloci of the space of rank one local systems |

November 8 | Chengxi Wang | Rutgers | Strong exceptional collections of line bundles |

November 15 | Vikraman Balaji | Chennai Mathematical Institute | Torsors on semistable curves and the problem of degenerations |

November 22 | Tudor Padurariu | MIT | Hall algebras for quivers with potential |

November 29 | No seminar | Thanksgiving | |

December 6 | Carl Lian | Columbia University | Enumerating pencils with moving ramification on curves |

Thurs, December 12
2:00 pm Room 507 |
Jacob Tsimerman | University of Toronto | o-minimal GAGA and applications to Hodge theory |

Schedules from the past: F '97 - F '00, S '01, F '01, S '02, F '02, S '03, F '03, S '04, F '04, S '05, F '05, S '06, F '06, S '07, F '07, S '08, F '08, S '09, F '09, S '10, F '10, S '11, F '11, S '12, F '12, S '13, F '13, S '14, F '14, S '15, F '15, S '16, F '16, S '17, F '17, S '18, F '18, S '19

This page is maintained by Will Sawin.