/sci/ - Science & Math

https://sites.google.com/view/nialltaggartmath/oats
>Emanuele Dotto (University of Warwick)
>Title: Witt vectors with coefficients and characteristic polynomials over non-commutative rings
>Abstract: The characteristic polynomial of a matrix with entries in a commutative ring R naturally takes value in the ring of Witt vectors of R. In joint work with Krause, Nikolaus and Patchkoria, we extend the classical Witt vectors construction to allow as input pairs of a ring R and a bimodule M. I will explain how this construction relates to topological Hochschild homology, the Hill-Hopkins-Ravenel norm, and the characteristic polynomial.
3 hours and 20 minutes till showtime. Boohoo Zoom.