## Columbia Algebraic Geometry Seminar## Spring 2006 |
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The Columbia Algebraic Geometry Seminar take place on Fridays in 520 Math at 2.30-3.30pm. There is usually lunch beforehand with everyone around. All are welcome.

Friday, Jan. 27 | Frans Oort | University of Utrecht | Leaves in a moduli space of abelian varieties and their dimensions. |

Friday, Feb. 3 | Abhinav Kumar | Harvard | K3 surfaces with high Neron-Severi rank |

Friday, Feb. 10 | János Kollár | Princeton | Holonomy groups of vector bundles |

Friday, Feb. 17 | Allen Knutson | UC San Diego | Limits of varieties: subschemes vs. branchvarieties |

Friday, Feb. 24 | Alexander Braverman | Brown | Geometric Langlands philosophy and instanton counting |

Friday, March 3 | Raman Parimala | Emory University | Existence of rational points on homogeneous spaces under linear algebraic groups |

Friday, March 10 | No seminar | ||

Friday, March 17 | Spring Break | ||

Friday, March 24 | Burt Totaro | University of Cambridge | When does a curve move on a surface, especially over finite fields? |

Friday, March 31 | Dan Abramovich | Brown | Reductive group-schemes, tame stacks, and stable maps |

Friday, April 7 | Mihnea Popa | University of Chicago | GV sheaves, Fourier-Mukai, and generic vanishing theorems |

Friday, April 14 | Brian Osserman | Berkeley | Beyond Schlessinger: deformation stacks |

Friday, April 21 | Sam Payne | Michigan | Toric vector bundles and the resolution property |

Friday, April 28 |
Dror Varolin (2.15) Weiping Li (3.30) |
Stony Brook Hong Kong |
Non-negativity of Hermitian Polynomials Construction of stable bundles on some Calabi-Yau 3-fold via variation of polarizations |

Friday, May 5 |
Change of time Mark Andrea de Cataldo (3.30 room 520) |
Stony Brook | Filtrations on cohomology arising from geometry |

Schedules from the past: Fall 1997 - Fall 2000, Spring 2001, Fall 2001, Spring 2002, Fall 2002, Spring 2003, Fall 2003, Fall 2004 Spring 2004, Fall 2005

This page is maintained by Julius Ross and was shamelessly copied indirectly from Pasha Belorousski via Michael Thaddeus.