Deciding reachability in mobile ambients

  • Authors:
  • Nadia Busi;Gianluigi Zavattaro

  • Affiliations:
  • Department of Computer Science, University of Bologna, Bologna, Italy;Department of Computer Science, University of Bologna, Bologna, Italy

  • Venue:
  • ESOP'05 Proceedings of the 14th European conference on Programming Languages and Systems
  • Year:
  • 2005

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Abstract

Mobile Ambients has been proposed by Cardelli and Gordon as a foundational calculus for mobile computing. Since its introduction, the computational strength as well as the decidability of properties have been investigated for several fragments and variants of the standard calculus. We tackle the problem of reachability and we characterize a public (i.e., restriction free) fragment for which it is decidable. This fragment is obtained by removing the open capability and restricting the use of replication to guarded processes. Quite surprisingly, this fragment has been shown to be Turing complete by Maffeis and Phillips.