# Ian Stark

## Encoding Distributed Areas and Local Communication into the Pi-Calculus

Tom Chothia and Ian Stark

In EXPRESS '01: Proceedings of the 8th International Workshop on Expressiveness in Concurrency, Aalborg, Denmark, 20 August 2001, Electronic Notes in Theoretical Computer Science 52.1. Elsevier, 2001.

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### Abstract

We show how the pi-calculus can express local communications within a distributed system, through an encoding of the local area pi-calculus, an enriched system that explicitly represents names which are known universally but always refer to local information. Our translation replaces point-to-point communication with a system of shared local ethers; we prove that this preserves and reflects process behaviour. We give an example based on an internet service dæmon, and investigate some limitations of the encoding.

@InProceedings{chothia/stark:encdal,
author =       {Tom Chothia and Ian Stark},
title =        {Encoding Distributed Areas and Local Communication into the
$\pi$-Calculus},
booktitle =    {EXPRESS~'01: Proceedings of the 8th International Workshop
on Expressiveness in Concurrency},
year =         2001,
number =       {52.1},
series =       {Electronic Notes in Theoretical Computer Science},
publisher =    {Elsevier},
url =          {http://www.inf.ed.ac.uk/~stark/encdal.html},
pdf =          {http://www.inf.ed.ac.uk/~stark/encdal.pdf}
}