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Seshadri constants in positive characteristic

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Mircea Mustata (Michigan)

  • SFB-Kolloquium
When Mar 06, 2014
from 02:15 pm to 03:15 pm
Where Mainz, 05-432 (Hilbertraum)
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Abstract Seshadri constants measure the local positivity of an ample line bundle at a point. In characteristic 0, vanishing theorems imply that lower bounds on the Seshadri constants of a line bundle have nice consequences for the corresponding adjoint line bundle. I will explain how similar results can be proved in positive characteristic by making use of the Frobenius morphism. This is based on joint work with Karl Schwede.