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Speaker:

Sarah Scherotzke
Affiliation:

Universität Münster
Date:

Mon, 2017-11-27 09:00 - 10:00
Location:

MPIM Lecture Hall The Chern character is a central construction with incarnations in algebraic topology, representation

theory and algebraic geometry. It is an important tool to probe $K$-theory, which is notoriously hard

to compute. In my talk, I will explain, what the categorification of the Chern character is and how we

can use it to show that certain classical constructions in algebraic geometry are of non-commutative

origin. The category of motives plays the role of $K$-theory in the categorified picture. The categorification

leads also to the construction of higher invariants such as the secondary Chern characters and secondary

$K$-theory.

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