Gelfand-Graev characters of the finite unitary groups

Details Gelfand-Graev characters of the finite unitary groups Gelfand-Graev characters of the finite unitary groups

2006-11-01

arxiv.org/abs/math/0611010v1

Mathematics

Representation Theory

Scientific paper

Gelfand-Graev characters and their degenerate counterparts have an important role in the representation theory of finite groups of Lie type. Using a characteristic map to translate the character theory of the finite unitary groups into the language of symmetric functions, we study degenerate Gelfand-Graev characters of the finite unitary group from a combinatorial point of view. In particular, we give the values of Gelfand-Graev characters at arbitrary elements, recover the decomposition multiplicities of degenerate Gelfand-Graev characters in terms of tableau combinatorics, and conclude with some multiplicity consequences.

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