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arXiv · 1512.07318

On the definition of almost characters

G. Lusztig
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Abstract

We define the almost characters of G(F_q) where G is a reductive connected group over a finite field F_q as explicit linear combinations of irreducible characters. Previously these were defined assuming that the centre of G is connected.

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G. Lusztig. 2015-12-23. On the definition of almost characters. https://arxiv.org/abs/1512.07318

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