Garside monoids vs divisibility monoids

  • Authors:
  • Matthieu Picantin

  • Affiliations:
  • Laboratoire Nicolas Oresme, UMR 6139 CNRS, Université de Caen, F-14000 Caen Email: picantin@math.unicaen.fr

  • Venue:
  • Mathematical Structures in Computer Science
  • Year:
  • 2005

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Abstract

Divisibility monoids are a natural algebraic generalisation of Mazurkiewicz trace monoids, namely monoids in which the distributivity of the underlying lattices is kept as a hypothesis, but the relations between the generators are not necessarily supposed to be commutations. Garside monoids are a natural algebraic generalisation of spherical Artin monoids, namely monoids in which the existence of common multiples is kept as a hypothesis, but the relations between the generators are not necessarily supposed to be of Coxeter type. Here, we show that the quasi-centre of these monoids can be studied and described in a similar way, and then we exhibit the intersection between the two classes of monoids.