We present role logic, a notation for describing properties of relational structures in shape analysis, databases, and knowledge bases. We construct role logic using the ideas of ...
racting these leads us to introduce the notion of a path object category. This is a relatively simple axiomatic framework, which is nonetheless sufficiently strong to allow the con...
With the substantial change of declarative query languages from plain SQL to the so-called \object SQLs", in particular OQL, there has surprisingly been not much change in the...
We present an extension of the πI-calculus with formal sums of terms. The study of the properties of this sum reveals that its neutral element can be used to make assumptions abo...
This paper is a proposal for a new two-tier calculus, designed to model aspects of CORBA-like systems at the CORBA evel. The higher object level known as Oompa abstracts away from...
Malcolm Tyrrell, Andrew Butterfield, Alexis Donnel...