Automatic structures for torus link groups

Details Automatic structures for torus link groups Automatic structures for torus link groups

2001-11-07

arxiv.org/abs/math/0111079v1

Mathematics

Group Theory

Scientific paper

A general result of Epstein and Thurston implies that all link groups are automatic, but the proof provides no explicit automaton. Here we show that the groups of all torus links are groups of fractions of so-called Garside monoids, i.e., roughly speaking, monoids with a good theory of divisibility, which allows us to reprove that those groups are automatic, but, in addition, gives a completely explicit description of the involved automata, thus partially answering a question of D.F.Holt.

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