Coxeter groups

Thursday, August 24, 2017 - 9:45am - 10:30am
Eric Marberg (Hong Kong University of Science and Technology)
Matsumoto's theorem is the statement that the set of all reduced words for an element of a Coxeter group is spanned and preserved by the group's so-called braid relations. Hu and Zhang have recently proved an analogue of this classical theorem for certain variants of reduced words for involutions in classical Weyl groups. Hu and Zhang's proof strategy would apply to more general Coxeter groups, but in practice is limited by the formidable amount of algebra involved.
Thursday, June 4, 2015 - 9:00am - 10:00am
Christian Stump (Freie Universität Berlin)
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