Wednesday, September 30, 2020
4:00-5:00 PM
Zoom
Off Campus Location
The connected component Aut_X^0 of the automorphism scheme of an algebraic variety X together with its tangent space at the identity, the space of global vector fields, is intimately related with the deformation theory of X. However, since, over fields of positive characteristic, Aut_X^0 is not necessarily smooth, not much is known about its precise structure, even in the case where X is a smooth projective surface. In this talk, I will present several results concerning the automorphism schemes of elliptic surfaces over algebraically closed fields of any characteristic (such as bounds on the dimension of the space of global vector fields and the length of the automorphism scheme), generalizing work of Rudakov and Shafarevich. Speaker(s): Gebhard Martin (University of Bonn)
Building: | Off Campus Location |
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Location: | Off Campus Location |
Event Type: | Workshop / Seminar |
Tags: | Mathematics |
Source: | Happening @ Michigan from Department of Mathematics, Algebraic Geometry Seminar - Department of Mathematics |