The emergence of the UML as a de facto standard for object-oriented modeling has been
mirrored by the success of the B method as a practically useful formal modeling technique …

Although UML state machines constitute a convenient modeling formalism that is widely
used in many applications, the lack of formal semantics impedes carrying out some …

The state-based formal methods B and TLA+ share the common base of predicate logic,
arithmetic and set theory. However, there are still considerable differences, such as the way …

A case study on automotive cruise control originally done in (conventional, discrete) Event-B
is reexamined in Hybrid Event-B (an extension of Event-B that includes provision for …

The Event-B method is a formal approach to modelling systems, using refinement. Initial
specification is done at a high level of abstraction; detail is added in refinement steps as the …

The reuse of reliable, domain-specific software components is a strategy commonly used in
the avionics industry to develop safety critical airborne systems. One method of achieving …

There is significant interest in the use of Z in conjunction with object-orientation. Here we
present a new approach to structuring Z specifications in an object-oriented (OO) style. Our …

Performing Bioinformatic's experiments involve an intensive access to distributed services
and information resources through Internet. Existing tools facilitate the implementation of …

Due to the popularity of object-oriented programming approaches, there is a growing
interest in utilizing object-oriented concepts, such as encapsulation and reuse, when …

Object-Z is an extension of the Z notation which facilitates specification of large, complex
software by defining a system as a collection of independent classes. A number of …