A nice labelling for tree-like event structures of degree 3

  • Authors:
  • Luigi Santocanale

  • Affiliations:
  • LIF - CNRS, Université de Provence

  • Venue:
  • CONCUR'07 Proceedings of the 18th international conference on Concurrency Theory
  • Year:
  • 2007

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Abstract

We address the problem of finding nice labellings for event structures of degree 3. We develop a minimum theory by which we prove that the labelling number of an event structure of degree 3 is bounded by a linear function of the height. The main theorem we present in this paper states that event structures of degree 3 whose causality order is a tree have a nice labelling with 3 colors. Finally, we exemplify how to use this theorem to construct upper bounds for the labelling number of other event structures of degree 3.