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University of Cambridge > Talks.cam > Isaac Newton Institute Seminar Series > Rationality Questions for Finite Reductive Groups

## Rationality Questions for Finite Reductive GroupsAdd to your list(s) Download to your calendar using vCal - Jay Taylor (University of Manchester)
- Friday 13 May 2022, 10:00-10:50
- Seminar Room 1, Newton Institute.
If you have a question about this talk, please contact nobody. GR2W01 - Counting conjectures and beyond Each (complex) irreducible character of a finite group determines a subfield of the complex numbers called its character field. This is the smallest subfield containing all character values. One can then ask whether there exists a representation of the group affording the character all of whose matrix entries are contained in the character field. Such a representation need not exist in general and the failure of such a representation to exist is measured by the Schur index. In this talk we will discuss results around character fields and Schur indices in the case where the group is a finite reductive group. This talk is part of the Isaac Newton Institute Seminar Series series. ## This talk is included in these lists:- All CMS events
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