Seminar Event Detail

Algebraic Geometry

Date:  Wednesday, September 07, 2016
Location:  4096 East Hall (4:10 PM to 5:30 PM)

Title:  Cohomology of varieties over the maximal cyclotomic extension

Abstract:   Some 35 years ago, Ken Ribet proved that an abelian variety defined over the maximal cyclotomic extension K of a number field has only finitely many torsion points. In joint work with Damian Roessler, we show that Ribet's theorem is an instance of a general cohomological statement about smooth projective varieties over K. We also present a largely conjectural generalization to torsion cycles of higher codimension, as well as an analogue in positive characteristic.


Speaker:  Tamas Szamuely
Institution:  Alfred Renyi Institute of Mathematics

Event Organizer:     


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