Forthcoming Papers

<span title="2002-06-01">2002</span> <i title="Oxford University Press (OUP)"> <a target="_blank" rel="noopener" href="https://fatcat.wiki/container/crzmi3qeiramtlvcrfycib3qg4" style="color: black;">Journal of Logic and Computation</a> </i> &nbsp;
We consider the relationship between -automata and a specific logical formulation based on a normal form for temporal logic formulae. While this normal form was developed for use with execution and clausal resolution in temporal logics, we here show how it can represent, syntactically, -automata in a high-level way. Technical proofs of the correctness of this representation are given. Linear Tense Logics of Increasing Sets B. Heinemann We provide an extension of the language of linear tense
more &raquo; ... c with future and past connectives and È , 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. Extending Kamp's Theorem to Model Time Granularity A. Montanari, A. Peron and A. Policriti In this paper, a generalization of Kamp's theorem relative to the functional completeness of the until operator is proved. Such a generalization consists in showing the functional completeness of more expressive temporal operators with respect to the extension of the first-order theory of linear orders Å Ç with an extra binary relational symbol. The result is motivated by the search of a modal language capable of expressing properties and operators suitable to model time granularity in -layered temporal structures. Axioms for Branching Time M. Reynolds Logics of general branching time, or historical necessity, have long been studied but important axiomatization questions remain open. Here the difficulties of finding axioms for such logics are considered and ideas for solving some of the main open problems are presented. A new, more expressive logical account is also given to support Peirce's prohibition on truth values being attached to the contingent future. In this paper, we present the logic ATCTL, which is intended to be used for model checking models that have been specified in a lightweight version of the Unified Modelling Language (UML). Elsewhere, we have defined a formal semantics for LUML to describe the models. This paper's goal is to give a specification language for properties that fits LUML; LUML includes states, actions and real time. ATCTL extends CTL with concurrent actions and real time. It is based on earlier extensions of CTL by De Nicola and Vaandrager (ACTL) and Alur et al. (TCTL). This makes it easier to adapt existing model checkers to ATCTL. To show that we can check properties specified in ATCTL in models specified in LUML, we give a small example using the Kronos model checker. 545
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