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Abstract: We give an apriori description of a set of irreducible representations of aWeyl group which parametrize the nilpotent orbits in the Lie algebra of aconnected reductive group in arbitrary characteristic. We also answer aquestion of Serre concerning the conjugacy class of a power of a unipotentelement in a connected reductive group.



Author: G. Lusztig

Source: https://arxiv.org/



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