Using relation algebra, we generalize Aumann’s notion of a contact relation and that of a closure operation from powersets to general membership relations and their induced parti...
Temporal logic can be used to describe processes: their behaviour is characterized by a set of temporal models axiomatized by a temporal theory. Two types of models are most often ...
This paper considers grasps and fixtures whose contacts react according to force-displacement laws consistent with friction constrains at the contacts. The passive force closure s...
We consider the navigational core of XPath, extended with two operators: the Kleene star for taking the transitive closure of path expressions, and a subtree relativisation operat...
We propose a new language concept called "L-closures" for a running program to legitimately inspect/modify the contents of its execution stack. L-closures are lightweight...