Reduction for characters of finite algebra groups

Details Reduction for characters of finite algebra groups Reduction for characters of finite algebra groups

2010-05-27

arxiv.org/abs/1005.5111v1

Mathematics

Group Theory

34 pages, 11 figures

Scientific paper

Let J be a finite-dimensional nilpotent algebra over a finite field F_q. We formulate a procedure for analysing characters of the group 1+J. In particular, we study characters of the group $U_n (q)$ of unipotent triangular $n\times n$ matrices over F_q. Using our procedure, we compute the number of irreducible characters of $U_n (q)$ of each degree for n<14. Also, we explain and generalise a phenomenon concerning the group $U_{13}(2)$ discovered by Isaacs and Karagueuzian.

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