PUMA
Istituto di Scienza e Tecnologie dell'Informazione     
De Nicola R. Two complete axiom systems for a theory of communicating sequential processes. Apparso come internal report CSR-154-83, University of Edinburgh, Departement of Computer Science, 1983. Internal note IEI-B83-24, 1983.
 
 
Abstract
(English)
In Hoare, Brookes and Roscoe (1981) an abstract version of Hoare's CSP is defined and a denotational somantics based on the possible fallures of processes is given for it. This semantics induces a natural preorder on processes. We define formally this preoreder and prove that it can be characterized as the smal1est relation satisfying a particular set of axioms. The characterization sheds lghts on problems arising from the way divergence and underspecification are handled. After small changes to tho semantic domains we propose a new semantics which Is closer to the operational Intuitions and suggests a possible solution to the above problems.Finallywe give an axiomatic characterization for the equivalence Induced by the new semantics whlch lead to fully abstract models in the sense of Scott.
Subject



Icona documento Open access Icona documento Restricted Icona documento Private

 


Per ulteriori informazioni, contattare: Librarian http://puma.isti.cnr.it

Valid HTML 4.0 Transitional