Abstract. A concurrent Kleene algebra offers, next to choice and iteration, operators for sequential and concurrent composition, related by an inequational form of the exchange la...
We introduce the νSPI-calculus that strengthens the notion of “perfect symmetric cryptography” of the spi-calculus by taking time into account. This involves defining an oper...
Specifying policies doesn’t occur in splendid isolation but as part of refining an enterprise specification. The roles, the tasks, and the business processes of an ODP community ...
James B. Cole, John Derrick, Zoran Milosevic, Kerr...
Coalgebras for a functor on the category of sets subsume many formulations of the notion of transition system, including labelled transition systems, Kripke models, Kripke frames a...
We add an operation of group creation to the typed π-calculus, where a group is a type for channels. Creation of fresh groups has the effect of statically preventing certain com...