On Expected Factors in Reduced Decompositions in Type B
Bridget Eileen Tenner
Abstract
The expected number of Yang-Baxter moves appearing in a reduced decomposition of the longest element of the Coxeter group of type Bn is computed to be 2-4/n. For the same element, the expected number of 0101 or 1010 factors appearing in a reduced decomposition is 2/(n2-2).
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