Alexander Bertoloni Meli, Teruhisa Koshikawa, Jonathan Leake
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Abstract
In this paper we prove a new characterization of the distinguished unipotent
orbits of a connected reductive group over an algebraically closed field of
characteristic 0. For classical groups we prove the characterization by a
combinatorial computation, and for exceptional groups we check it with a
computer. This characterization is needed in the theory of cuspidal sheaves on
the stack of L-parameters in forthcoming work of the first two named authors.
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