relation: http://eprints.imtlucca.it/285/ title: Semantic subtyping for the pi-calculus creator: Castagna, Giuseppe creator: De Nicola, Rocco creator: Varacca, Daniele subject: QA75 Electronic computers. Computer science description: Subtyping relations for the π-calculus are usually defined in a syntactic way, by means of structural rules. We propose a semantic characterisation of channel types and use it to derive a subtyping relation. The type system we consider includes read-only and write-only channel types, as well as boolean combinations of types. A set-theoretic interpretation of types is provided, in which boolean combinations of types are interpreted as the corresponding set-theoretic operations. Subtyping is defined as inclusion of the interpretations. We prove decidability of the subtyping relation and sketch the subtyping algorithm. In order to fully exploit the type system, we define a variant of the π-calculus where communication is subjected to pattern matching that performs dynamic typecase. publisher: Elsevier date: 2008 type: Article type: PeerReviewed identifier: Castagna, Giuseppe and De Nicola, Rocco and Varacca, Daniele Semantic subtyping for the pi-calculus. Theoretical Computer Science, 398 (1-3). pp. 217-242. ISSN 0304-3975 (2008) relation: http://www.sciencedirect.com/science/article/pii/S0304397508000698 relation: 10.1016/j.tcs.2008.01.049