The feasibility of using standard Z notation in the design of complex systems.
Formal design methods are becoming increasingly recognised as being useful for specifying
complex systems. Incorporating formal methods in the early stages of a design process introduces
the possibility of using mathematical techniques, hence improving the effectiveness
of a design process.
The Z notation has been applied mainly to specifying software, although it has also been
used for specifying hardware and general systems. The Z notation fulfils two functions in
this thesis. The first function is as a notation for representing specifications of complex
systems, and the second function is as a notation for representing implementations of the
same complex systems. The suitability of the Z notation for these functions is investigated
in three studies. Both the specifications and implementations are represented as unified collections
of Schemas that describe the behaviour in response to each set of input conditions.
In each of the studies, both the specifications and implementations of the complex system
take place at an early stage in a design process. Throughout this thesis non rigorous proof
sketches prove that the implementations meet the requirements of the specifications.