Minimal length elements in conjugacy classes of extended affine Weyl group

preprint2010arXivOpen access

Abstract

We study the minimal length elements in an integral conjugacy class of a classical extended affine Weyl group and we show that these elements are quite "special" in the sense of Geck and Pfeiffer \cite{GP93}. We also discuss some application on extended affine Hecke algebras and loop groups.

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