Séminaire Lotharingien de Combinatoire, B34g (1995), 23pp.

Alain Lascoux, Bernard Leclerc and Jean-Yves Thibon

Ribbon tableaux, Hall-Littlewood functions and unipotent varieties

Abstract. We introduce a new family of symmetric functions, which are defined in terms of ribbon tableaux and generalize Hall-Littlewood functions. We present a series of conjectures, and prove them in two special cases.

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