© 2002 by Oxford University Press
Original Article |
Linear Tense Logics of Increasing Sets
1 Fachbereich Informatik, FernUniversität Hagen, D58084 Hagen, Germany. E-mail: Bernhard.Heinemann{at}fernuni-hagen.de
We provide an extension of the language of linear tense logic with future and past connectives F and P, respectively, by a modality that quantifies over the points of some set which is assumed to increase in the course of time. In this way we obtain a general framework for modelling growth qualitatively. We develop an appropriate logical system, prove a corresponding completeness and decidability result and discuss the various kinds of flow of time in the new context. We also consider decreasing sets briefly.
Keywords: Temporal reasoning; modal logics of time; modal logics of set spaces
Received 9 January 2001.