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arXiv · 1706.09595

Stable basic sets for finite special linear and unitary group

David Denoncin
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Abstract

In this paper we show, using Deligne-Lusztig theory and Kawanaka's theory of generalised Gelfand-Graev representations, that the decomposition matrix of the special linear and unitary group in non defining characteristic can be made unitriangular with respect to a basic set that is stable under the action of automorphisms.

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David Denoncin. 2017-06-29. Stable basic sets for finite special linear and unitary group. https://arxiv.org/abs/1706.09595

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