## Columbia Algebraic Geometry Seminar## Spring 2018 |
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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, Daniel Litt, and Alexander Perry.

January 19 | Aaron Bertram | University of Utah | Counting Quotients |

January 26 | Yuri Tschinkel | New York University | Rationality problems |

February 2 | Michail Savvas | Stanford University | Generalized Donaldson-Thomas Invariants via Kirwan Blowups |

February 9 | Anna Cadoret | Université Pierre et Marie Curie | The fundamental theorem of Weil II (for curves) with ultra product coefficients |

February 16 | David Hansen | Columbia University | The one-point compactification of a scheme |

February 23 | Ádám Gyenge | University of British Columbia | A power structure over the Grothendieck ring of geometric dg categories |

March 2 | Xiaolei Zhao | Northeastern University | Twisted cubics on cubic fourfolds and stability conditions |

March 9 | Brian Lawrence | Columbia University | Diophantine Problems and a p-adic Period Map |

March 16 | No seminar | Spring break | |

March 23 | Special doubleheader event. Note the special times and rooms. | ||

2:30 pm in 507 Math | Angela Gibney | Rutgers University | Vector bundles on the moduli space of curves from affine Lie algebras |

3:45 pm in 417 Math | Daniel Krashen | Rutgers University | Topological viewpoints on local-global principles |

March 30 | Joe Waldron | Princeton University | Singularities of general fibers in positive characteristic |

April 6 | János Kollár | Princeton University | Severi-Brauer varieties |

April 13, Special time and place: 10:30 am in 407 Math |
Ariyan Javanpeykar | Johannes Gutenberg-Universität Mainz | Arithmetic finiteness results for Fano varieties and hypersurfaces |

April 20 | Yuan Wang | Northwestern University | Rational curves on hypersurfaces |

April 27 | Daniel Bragg | University of Washington | Supersingular twistor spaces |

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

This page is maintained by Alexander Perry.