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Motivic cohomology of singular schemes

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Speaker: 
Tess Bouis
Affiliation: 
Universität Regensburg
Date: 
Fri, 13/12/2024 - 14:05 - 16:00
Location: 
MPIM Lecture Hall

I will present a new theory of motivic cohomology for general (qcqs) schemes, which generalises the construction of Elmanto-Morrow over a field. It is related to non-connective algebraic K-theory via an Atiyah-Hirzebruch spectral sequence. In particular, it is non-A^1-invariant in general, but it recovers classical motivic cohomology on smooth schemes over a field (by the work of Elmanto-Morrow) or over a Dedekind domain (by recent work in progress with Arnab Kundu). I will also discuss how one can import results from prismatic cohomology to study this theory of motivic cohomology.

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