Trace and testing equivalence on asynchronous processes

  • Authors:
  • Michele Boreale;Rocco De Nicola;Rosario Pugliese

  • Affiliations:
  • -;Univ. di Firenze, Firenze, Italy;Univ. di Firenze, Firenze, Italy

  • Venue:
  • Information and Computation
  • Year:
  • 2002

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Abstract

We study trace and may-testing equivalences in the asynchronousversions of CCS and &pgr;-calculus. We start from theoperational definition of the may-testing preorder and providefinitary and fully abstract trace-based characterizations for it,along with a complete in-equational proof system. We also touchupon two variants of this theory by first considering a moredemanding equivalence notion (must-testing) and then a richerversion of asynchronous CCS. The results throw light on thedifference between synchronous and asynchronous communication andon the weaker testing power of asynchronous observations.