Speaker: |
Yuri Prokhorov (Moscow State University) |

Title: |
Subgroups of Cremona groups I |

Date: |
Wed, Feb 08, 2012, 13:15 - 14:45 |

Place: |
Seminar Room A |

Abstract: |
Cremona group is the group of automorphisms of the rational function field C(t_1,t_2,..., t_n). In this lecture I describe the method that allow to find finite subgroups of the Cremona group. I introduce minimal models (G-Fano-Mori models) and outline the classification in dimension 2. Relation to the notion of essential dimension of groups will also discussed. |