Axiomatizing binding bigraphs

  • Authors:
  • Troels C. Damgaard;Lars Birkedal

  • Affiliations:
  • IT University of Copenhagen, Copenhagen S, Denmark;IT University of Copenhagen, Copenhagen S, Denmark

  • Venue:
  • Nordic Journal of Computing - Selected papers of the 17th nordic workshop on programming theory (NWPT'05), October 19-21, 2005
  • Year:
  • 2006

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Abstract

We axiomatize the congruence relation for binding bigraphs and prove that the generated theory is complete. In doing so, we define a normal form for binding bigraphs, and prove that it is unique up to certain isomorphisms.Our work builds on Milner's axioms for pure bigraphs. We have extended the set of axioms with five new axioms concerned with binding, and we have altered some of Milner's axioms for ions, because ions in binding bigraphs have names on both their inner and outer faces. The resulting theory is a conservative extension of Milner's for pure bigraphs.