We present novel techniques for efficient controller synthesis for untimed and timed systems with respect to invariance and reachability properties. In the untimed case, we give al...
We introduce the concept of a group principal and present a number of different classes of group principals, including threshold-group-principals. These appear to naturally usefu...
Abstract. Using graphical description techniques for formal system development has become a common approach in many tools. Often multiple description techniques are used to represe...
Abstract. The emerging Unified Modelling Language has been touted as merging the best features of existing modelling languages, and has been adopted by leading companies and vendo...
Support for system speci cation in terms of modelling and simulation environments has become a common practice in safety-critical applications. Also, a current trend is the automat...
Abstract. The classical concepts of partial and total correctness identify all types of runtime errors and divergence. We argue that the associated notions of translation correctne...
Conformance control for ATM cells is based on a real-time reactive algorithm which delivers a value depending on inputs from the network. This value must always agree with a well d...