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Journal Articles Journal of Algebra Year : 2012

A simple algorithm for finding short sigma-definite representatives

Abstract

We describe a new algorithm which for each braid returns a quasi-geodesic sigma-definite word representative, defined as a braid word in which the generator sigma_i with maximal index i appears either only positively or only negatively.
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Dates and versions

hal-00553245 , version 1 (06-01-2011)

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Jean Fromentin, Luis Paris. A simple algorithm for finding short sigma-definite representatives. Journal of Algebra, 2012, 350 (1), pp.404-415. ⟨hal-00553245⟩
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