The Tate conjecture and semisimplicity of Galois representation
Ben Moonen (Nijmegen)  SAG
What 


When 
Dec 21, 2017 from 10:30 pm to 11:30 pm 
Where  Bonn, HĂ¶rsaal MPI, Vivatsgasse 7 
Contact Name  Sachinidis 
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Consider smooth projective varieties over finitely generated fields of characteristic 0. The Tate Conjecture is often stated as having two parts: one assertion (S) about semisimplicity of Galois representations on the cohomology, and an assertion (T) saying that all Tate classes are algebraic. In my talk I will explain that in fact (T) implies (S). This uses some basic properties about motives. My talk is aimed at nonexperts, and I will spend a large part of it on an introduction to the underlying ideas.