[isabelle] new AFP entry: Isabelle/Circus

Title: Isabelle/Circus
Authors: Abderrahmane Feliachi, Marie-Claude Gaudel, and Burkhart Wolff

The Circus specification language combines elements for complex data and behavior specifications, using an integration of Z and CSP with a refinement calculus. Its semantics is based on Hoare and He's Unifying Theories of Programming (UTP). Isabelle/Circus is a formalization of the UTP and the Circus lan- guage in Isabelle/HOL. It contains proof rules and tactic support that allows for proofs of refinement for Circus processes (involving both data and behavioral aspects).

The Isabelle/Circus environment supports a syntax for the semantic definitions which is close to textbook presentations of Circus.
This article contains an extended version of corresponding VSTTE Paper together with the complete formal development of its underlying commented theories. 

Enjoy at [http://afp.sf.net/entries/Circus.shtml]


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