Han-Ung Kufner (Universität Regensburg)

A conjecture of Deligne from 1977 relates the critical values of a motivic
L-function with certain periods of the motive. The goal of this talk is to
explain Deligne’s conjecture and to discuss a proof in the case of Hecke
L-functions. This generalizes a result of Blasius for Hecke characters of CMfields.
For the proof we use the recently constructed Eisenstein-Kronecker
classes of Kings-Sprang and combine them with ideas from Blasius’ proof.
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