Communicating sequential processes
Communicating sequential processes
The Z notation: a reference manual
The Z notation: a reference manual
Using Z: specification, refinement, and proof
Using Z: specification, refinement, and proof
The B-book: assigning programs to meanings
The B-book: assigning programs to meanings
The Theory and Practice of Concurrency
The Theory and Practice of Concurrency
Concurrent and Real Time Systems: The CSP Approach
Concurrent and Real Time Systems: The CSP Approach
ZB '00 Proceedings of the First International Conference of B and Z Users on Formal Specification and Development in Z and B
ZB '02 Proceedings of the 2nd International Conference of B and Z Users on Formal Specification and Development in Z and B
A Theory of Generalised Substitutions
ZB '02 Proceedings of the 2nd International Conference of B and Z Users on Formal Specification and Development in Z and B
ZB '02 Proceedings of the 2nd International Conference of B and Z Users on Formal Specification and Development in Z and B
A Denotational Semantics for Circus
Electronic Notes in Theoretical Computer Science (ENTCS)
Formal Aspects of Computing
Chunks: component verification in CSP ∥ b
IFM'05 Proceedings of the 5th international conference on Integrated Formal Methods
A concurrent language for refinement
IW-FM'01 Proceedings of the 5th Irish conference on Formal Methods
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We propose what is essentially a recasting of Circus, the Z-and-CSP-based concurrent language for refinement, into a B context by means of a modest extension of classical B which introduces a new structural component called a reactive-B process. This specifies the channels via which the process can communicate with its environment, and actions by which its behaviour is specified. Such actions are expressed in a new action notation in the same syntactic spirit as B’s Abstract Machine Notation, but with a similar Unifying Theories of Programming relational semantics to that of the actions of Circus. Crucially, by including ordinary abstract machines these reactive-B processes can also acquire persistent state, which their actions can manipulate by invoking the operations of those included machines.