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Pré-Publication, Document De Travail Année : 2007

Roots, symmetries and conjugacy of pseudo-Anosov mapping classes.

Résumé

An algorithm is proposed that solves two decision problems for pseudo-Anosov elements in the mapping class group of a surface with at least one marked fixed point. The first problem is the root problem: decide if the element is a power and in this case compute the roots. The second problem is the symmetry problem: decide if the element commutes with a finite order element and in this case compute this element. The structure theorem on which this algorithm is based provides also a new solution to the conjugacy problem.
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Dates et versions

hal-00178215 , version 1 (10-10-2007)

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Jérôme Fehrenbach, Jérôme Los. Roots, symmetries and conjugacy of pseudo-Anosov mapping classes.. 2007. ⟨hal-00178215⟩
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