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We describe some elementary results underlying the rationality of
Poincaré series of "natural" subsets of Coxeter groups and the
tendency of the coefficients of these series to increase
as entries of the Coxeter matrix increase.
After the seminar we will take the speaker to lunch. See the Algebra Seminar web page for information about other seminars in the series. Anthony Henderson anthonyh@maths.usyd.edu.au. |