Richard Owens

METATEM: a framework for programming in temporal logic

In this paper we further develop the methodology of temporal logic as an executable imperative language, presented by Moszkowski [Mos86] and Gabbay [Gab87, Gab89] and present a concrete framework, called MetateM for executing (modal and) temporal logics. Our approach is illustrated by the development of an execution mechanism for a propositional temporal logic and for a restricted first order temporal logic.

MetateM: An introduction

In this paper a methodology for the use of temporal logic as an executable imperative language is introduced. The approach, which provides a concrete framework, calledMetateM, for executing temporal formulae, is motivated and illustrated through examples. In addition, this introduction provides references to further, more detailed, work relating to theMetateM approach to executable logics.

An Introduction to Executable Modal and Temporal Logics

In recent years a number of programming languages based upon the direct execution of either modal or temporal logic formulae have been developed. This use of non-classical logics provides a powerful basis for the representation and implementation of a range of dynamic behaviours. Though many of these languages are still experimental, they are beginning to be applied, not only in Computer Science and AI, but also in less obvious areas such as process control and social modelling.

Information systems development using a combination of process and rule based approaches

During the last years, the time aspect in information systems development has been addressed by several researchers [2], [8], [6]. Organisations are dynamic by nature and thus, the importance of modelling time explicitly in systems engineering approaches is crucial. This paper proposes a way of integrating process and rule based approaches in information systems development. Both static and dynamic aspects including the temporal dimension can be described. We envisage an approach with incremental specifications where details are successively added until we arrive at a specification from which executable code can be automatically generated. The output from this process (i.e., a set of rules) should be compatible with a rule manager which controls the execution of the system. A prototype has been developed to demonstrate the feasibility of this approach and is briefly described.

From the Past to the Future: Executing Temporal Logic Programs

We describe some of the techniques which have been used to implement MetateM, a programming language based on temporal logic, and address problems such as non-determinism and looping which place constraints on the use of temporal logic as a programming language.

Languages, Meta-languages and METATEM, A Discussion Paper

Metalanguages are vital to the development and usage of formal systems, and yet the nature of metalanguages and associated notions require clarification. Here we attempt to provide a clear definition of the requirements for a language to be a meta-l&nguage, together with consideration of issues of proof theory, model theory and interpreters for such a language.