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Peter Patzt: Unstable cohomology of SL_n Z and Hopf algebras

Time: Thu 2024-11-14 11.00 - 12.00

Location: Cramer room, Albano

Participating: Peter Patzt (University of Oklahoma)

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Abstract.

The cohomology of \(\mathrm{SL}_n \mathbf{Z}\) has many connections to geometry and number theory and is largely unknown. In this talk, I will give a survey about what is known about it. In particular, I will include newly found unstable classes which come from a Hopf algebra structure. This talk is on joint work with Avner Ash and Jeremy Miller.

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