61. Temporal Logic Previous temporal database Next Tempura. temporal logic. There aretwo types of temporal logic used branching time and linear time. http://burks.brighton.ac.uk/burks/foldoc/33/116.htm

The Free Online Dictionary of Computing ( http://foldoc.doc.ic.ac.uk/ dbh@doc.ic.ac.uk Previous: temporal database Next: Tempura temporal logic logic predicate calculus which includes notation for arguing about *when* statements are true. Time is discrete and extends indefinitely into the future. Three prefix operators, represented by a circle, square and diamond mean "is true at the next time instant", "is true from now on" and "is eventually true". x U y means x is true until y is true. x P y means x precedes y. There are two types of formula: "state formulae" about things true at one point in time, and "path formulae" about things true for a sequence of steps. An example of a path formula is "x U y", and example of a state formula is "next x" or a simple atomic formula such at "waiting". "true until" in this context means that a state formula holds at every point in time up to a point when another formula holds. "x U y" is the "strong until" and implies that there is a time when y is true. "x W y" is the "weak until" in which it is not necessary that y holds eventually. There are two types of temporal logic used: branching time and linear time. The basic propositional temporal logic cannot differentiate between the two, though. Linear time considers only one possible future, in branching time you have several alternative futures. In branching temporal logic you have the extra operators "A" (for "all futures") and "E" (for "some future"). For example, "A(work U go_home)" means "I will work until I go home" and "E(work U go_home)" means "I may work until I go home".

62. Modal Temporal Logic Modal temporal logic. Research applications. We have developed an efficientexecutional model for an interval based linear modal temporal logic. http://www.comp.brad.ac.uk/research/ai/temporal.html

Department of Computing University of Bradford University Information Service: Contents Index Search Modal Temporal Logic Research into temporal logic includes the study of temporal logic within the framework of logic and covers: axiom systems, theorem proving and proof theory, model theory, execution models and applications. Author: I.S.Torsun Last update: 2/5/96 Up to AI group homepage

63. Browsing Science Math Logic And Foundations Nonstandard Logics And Extensions Te Centre for Agent Research and Development Among other activities, this group explorestopics related to temporal logic including temporal resolution methods. http://www.uksprite.com/search/search/Science/Math/Logic_and_Foundations/Nonstan

/* CSS Menu highlight- By Marc Boussard (marc.boussard@syntegra.fr) Modified by DD for NS4 compatibility Visit http://www.dynamicdrive.com for this script */ var ns4class='' WebSearch Low-cost advertising at UKSprite Join Login @UK.Sprite Home Latest Headlines UK Weather World Weather ... UK Travel Guide Fun TV Guide Lotto e-Greetings Mobile Fun Communicate Email Login Get Free Email Free Text Messages Lifestyle Horoscopes Dating Recipes Health Shop DVD's Books Videos More... Deals Auctions Classified Ads Site Map Browsing: Science Math Logic and Foundations Nonstandard Logics and Extensions Temporal Logic Top Science Math Logic and Foundations ... Nonstandard Logics and Extensions Temporal Logic Categories: Prior, Arthur Related Categories: Reference: Time Centre for Agent Research and Development Among other activities, this group explores topics related to temporal logic including temporal resolution methods. http://www.doc.mmu.ac.uk/RESEARCH/CARD/ Preview This Site Efficient Symbolic Tools A BDD based tool for the formal verification of concurrent systems using a propositional branching-time temporal logic: action computation tree logic (ACTL). It runs under different OS, including Linux and Windows 95/98/NT. http://www.el.feri.uni-mb.si/est/

64. Verifying Temporal Formulas In The Temporal Logic Of Actions Verifying temporal Formulas in the temporal logic of Actions. LucianWischik, University of Cambridge. The temporal logic of Actions. http://gatekeeper.research.compaq.com/pub/DEC/SRC/technical-notes/SRC-1999-003-h

65. Temporal Logic temporal logic. A Two useful temporal logics are Computation Tree logic(called CTL) and Linear temporal logic (called LTL). They http://nusmv.irst.itc.it/NuSMV/papers/sttt_j/html/node3.html

Next: Symbolic Representation of Kripke Up: Symbolic Model Checking Previous: Symbolic Model Checking Temporal Logic A finite state system can be described as a tuple: where is a finite set of states, is the set of initial states, and is the transition relation, specifying the possible transitions from state to state. is a function that labels states with the atomic propositions from a given language. Such a tuple is called state transition graph or Kripke structure Figure 1: A State Transition Graph and its unwinding. Temporal logics are used to predicate over the behavior defined by Kripke structures. A behavior in a Kripke structure is obtained starting from a state , and then repeatedly appending states reachable through . We require that the transition relation be total. As a consequence all the behaviors of the system are infinite. Since a state can have more than one successor, the structure can be thought of as unwinding into an infinite tree, representing all the possible executions of the system starting from the initial states. Figure shows a state transition graph and its unwinding from the state labeled with `` A Two useful temporal logics are Computation Tree Logic (called CTL) and Linear Temporal Logic (called LTL). They differ in how they handle branching in the underlying computation tree. In CTL temporal operators it is possible to quantify over the paths departing from a given state. In LTL operators are intended to describe properties of all possible computation paths.

66. From Event-Based Semantics To Linear Temporal Logic From EventBased Semantics to Linear temporal logic The logical and ComputationalAspects of a Natural Language Interface for Hardware Verification. http://www.ltg.ed.ac.uk/prosper/papers/laureys-1999-ebs/

P ROSPER AT E DINBURGH Proof and Specification Assisted Design Environments From Event-Based Semantics to Linear Temporal Logic: The Logical and Computational Aspects of a Natural Language Interface for Hardware Verification Tom Laureys MSc Dissertation, School of Cognitive Science , University of Edinburgh Abstract Computing system design can significantly benefit from the application of formal verification techniques. However, the logical expertise which formal verification requires has often hindered its take-up in industry. The present work proposes a solution to this problem in the form of a natural language interface for hardware verification. From a theoretical point of view, the logical background for an interface system is researched. On the computational side, a prototype is developed which can form the foundation for a fully operational natural language interface. Full paper PostScript PDF 26 November 1999

67. QSL: Temporal Logic temporal logic. December 10, 2002. 11h00, Break, 11h20, temporal logic with ForgettablePast François Laroussinie, LSV, Ecole Normale Supérieure, Cachan http://www.loria.fr/~merz/events/qsl021012/

QSL seminar Temporal Logic December 10, 2002 LORIA Rooms B011/B013 Campus Scientifique Vandoeuvre-les-Nancy directions Organizers: and Stephan Merz The logic of time has its roots in philosophy and linguistics. Its application to specification and reasoning about computer-based systems is mainly due to Amir Pnueli's insight (published in his FOCS 1977 paper "The temporal logic of programs") that it provides relevant abstractions to describe runs of computer programs, and in particular of reactive systems . One of the practically most relevant discoveries has been the decidability of the model checking problem of standard propositional temporal logics over finite-state Kripke structures, leading to important advancements in the field of automatic verification and debugging of reactive systems, now routinely used in the herdware and telecommunication industries. This seminar is intended to review and discuss some recent developments as well as lessons learnt at the interface of theory and practice. Registration expired Welcome Automata and Games for Synthesis Igor Walukiewicz

68. The Temporal Logic Of Actions I The temporal logic of Actions I. Wolfgang Provability; Rigid Variables and Quantifiers;The Enabled Predicate; Simple temporal logic; temporal Formulas; http://www.risc.uni-linz.ac.at/courses/ss2001/formalpar/tla1/

The Temporal Logic of Actions I Wolfgang Schreiner Research Institute for Symbolic Computation (RISC-Linz) Johannes Kepler University, A-4040 Linz, Austria Introduction Logic Versus Programming Goals of a Programming Logic The Logic of Actions ... Additional Rules Author: Wolfgang Schreiner Last Modification: May 14, 1998 Up RISC-Linz University Search

69. Linear Temporal Logic Linear temporal logic. This contribution 6166). Date July 2002. Keywords temporallogic, infinite transition systems, coinduction. Warning ! This http://coq.inria.fr/contribs/LTL.html

Linear Temporal Logic This contribution contains a shallow embedding of Linear Temporal Logic (LTL) based on a co-inductive representation of program executions. Temporal operators are implemented as inductive (respectively co-inductive) types when they are least (respectively greatest) fixpoints. Several general lemmas, that correspond to LTL rules, are proved. Download (archive compatible with Coq V7.4) Author: Solange COUPET-GRIMAL Institution: Laboratoire d'Informatique Fondamentale de Marseille (LIF, UMR 6166). Date: July 2002 Keywords: temporal logic, infinite transition systems, co-induction. Warning ! This contribution is based upon the following other contributions: relations The README file of the contribution: This page was automatically generated from this description file

70. AIDAM Special Issue: Temporal Logic In Engineering CALL FOR PAPERS. Special Issue on temporal logic in Engineering. GuestEditors Brian Knight and Ephraim Nissan Deputy Guest Editor Jixin Ma. http://www.gre.ac.uk/~E.Nissan/call.aiedam.temporal.logic.html

CALL FOR PAPERS Special Issue on Temporal Logic in Engineering Guest Editors: Brian Knight and Ephraim Nissan Deputy Guest Editor: Jixin Ma AIEDAM: ARTIFICIAL INTELLIGENCE FOR ENGINEERING DESIGN, ANALYSIS AND MANUFACTURING. A journal published by Cambridge University Press. Temporal logic within AI is now a mature paradigm, with an extensive literature on theory, and a considerable panoply of published applications. Paper submissions are solicited for a special issue on applications of temporal logic to any branch of engineering. Papers should make a substantial contribution to the application domain, to provide insights other than rote on temporal logic itself, and to appeal to a scholarly readership of engineers or computer scientists. Refereeing will evaluate the quality of submissions in respect of both the application domain, and computer science. AIEDAM: Artificial Intelligence for Engineering Design, Analysis and Manufacturing is an archival research journal that is intended to reach two audiences: engineers and designers who see AI technologies as powerful means for solving difficult engineering problems; and researchers in AI and computer science who are interested in applications of AI and in the theoretical issues that arise from such applications. Original articles are specifically sought by AIEDAM, that develop new and interesting applications based on the most up-to-date research in all branches and phases of engineering, including analysis, synthesis and design; manufacturing and assembly; and concurrent engineering. The journal is interested in the use of AI in planning, design, analysis, simulation, spatial reasoning and graphics, manufacturing, assembly, process planning, scheduling, numerical analysis, and optimization. reas of special interest include: knowledge-based (expert) systems for engineering, including knowledge acquisition and representation, control, and system architectures; theo- retical work on the modeling of engineering problem-solving and design processes; the integration of AI-based techniques with numerical analysis tools, graphics and solid modeling packages, and engineering databases; and engineering applications of knowledge-based vision and of natural language processing.

71. Temporal Logic As A Programming Language temporal logic as a Programming Language. The framework developed for propositionaltemporal logic is extended to firstorder temporal logic. http://siskin.pst.informatik.uni-muenchen.de/~merz/papers/diss.html

72. Efficiently Executable Temporal Logic Programs Efficiently executable temporal logic programs. Abstract We identifya subset of firstorder LTL (temporal logic of linear time) that http://siskin.pst.informatik.uni-muenchen.de/~merz/papers/IJCAI93.html

73. Temporal Logic And Semidirect Products: An Effective Characterization Of The Unt temporal logic and Semidirect Products An Effective Characterizationof the Until Hierarchy. Denis Thérien, Thomas Wilke. Abstract. http://epubs.siam.org/sam-bin/dbq/article/32277

SIAM Journal on Computing Volume 31, Number 3 pp. 777-798 Temporal Logic and Semidirect Products: An Effective Characterization of the Until Hierarchy Denis Thérien, Thomas Wilke Abstract. We reveal an intimate connection between semidirect products of finite semigroups and substitution of formulas in linear temporal logic. We use this connection to obtain an algebraic characterization of the until hierarchy of linear temporal logic. (The k th level of that hierarchy is comprised of all temporal properties that are expressible by a formula of nesting depth k in the until operator.) Applying deep results from finite semigroup theory we are able to prove that each level of the until hierarchy is decidable. By means of EhrenfeuchtFraissé games, we extend the results from linear temporal logic over finite sequences to linear temporal logic over infinite sequences. Key words. linear temporal logic, until hierarchy, substitution, finite semigroups, pseudovarieties of semigroups, aperiodic semigroups, semidirect products AMS Subject Classifications PII Retrieve PostScript document ( 32277.ps

74. UMCS-94-7-1 A Reified Temporal Logic For Nonlinear Planning UMCS94-7-1 A Reified temporal logic for Nonlinear Planning (158605 bytes).Y. Zhang and H. Barringer. Keywords temporal logics in AI. AI planning. http://www.cs.man.ac.uk/cstechrep/Abstracts/UMCS-94-7-1.html

UMCS-94-7-1 A Reified Temporal Logic for Nonlinear Planning (158605 bytes) Y. Zhang and H. Barringer Keywords: Temporal logics in AI. AI planning. Deductive planning. Nonlinear planning. Abstract:

75. Efficient Symbolic Tools A BDD based tool for the formal verification of concurrent systems using a propositional branchingtime temporal logic action computation tree logic (ACTL). It runs under different OS, including Linux and Windows 95/98/NT. http://www.el.feri.uni-mb.si/est/

EST Home Page EST SourceForge Page is a mirror of this page at SourceForge Project: Efficient Symbolic Tools Authors: Robert Meolic, Tatjana Kapus, Ales Casar, Mirjam Sepesy Maucec, Zmago Brezocnik Synopsis: Efficient Symbolic Tools package (EST) is a new tool for the verification of concurrent systems , which has not been widely presented yet. Its main advantages are the flexibility, portability and an efficient memory management. The latter is mainly the consequence of a well implemented BDD package with good garbage collection functions. EST distinguishes itself as a small and efficient package with an easily readable source code and well implemented algorithms. It runs on many different computers with different operating systems, including HP-UX, Linux, and Windows 95/98/NT. COBISS-ID: 5626902 (this number is used by Slovenian libraries) Source Forge: EST SourceForge Project Info Previews: license menu dialog colors ... an example of verification Binary release of EST, 1st edition est-1ed-linux.zip , Sep 21, 2001, (Intel, Debian 2.2.18, Tcl/Tk 8.2.3), est-1ed-solaris.zip

76. People In Temporal Logic People in temporal logic. A list of Personal WWW pages of researchesin temporal logic. This is my personal collection of links to http://www.doc.mmu.ac.uk/STAFF/A.Bolotov/LINKS/people.html

People in Temporal Logic A list of Personal WWW pages of researches in Temporal Logic. This is my personal collection of links to WWW pages of those researchers I referred to or used their texts as a background. Julian Bradfield Bruno Courcelle Orna Crumberg Mads Dam ... Pier Wolper

77. Temporal Logic 8. Intuitions about actions and events. 9. Interval temporal logic 10. Time infirst order predicate logic 11. Conclusion 16. References. temporal logic. http://guthulamurali.freeservers.com/temp.html

Free Web site hosting - Freeservers.com CONTENTS 1. Abstract 2. Knowledge and Knowledge representation 3. Introduction to Temporal Logic 4. Modeling Time 5. Reasoning About Time and The Situation Calculus 6. James F. Allen and George Ferguson theory 7. Representing Actions and Events. 8. Intuitions about actions and events. 9. Interval temporal logic 10. Time in first order predicate logic 11. Temporal logic based on modality 12. An Example of Reasoning of temporal logic : Study room 13. Advantages and disadvantages 14. Applications 15. Conclusion 16. References TEMPORAL LOGIC ABSTRACT: In temporal logic we will consider how it will effect the world which is developing very fast. Now a days it is very important to consider time as basic unit. Every plan depends on time. In this topic we will explain various temporal logic in which time plays important role we will also deal with various author theories in which they explain by taking time in to account. We consider various robot actions, planning, natural language understanding scheduling, and genetics. At last we will explain about reasoning of study room using temporal logic. Knowledge 'Knowledge is the symbolic representation of aspects of some named universe of discourse.' The universe of discourse may be the actual universe or some non-actual universe such as a universe in the future, a make -believe depicted in fiction, a universe existing in an individual's beliefs, etc.

78. Temporal Logic Resources temporal logic Resources. Appeared in Volume 6/2, May 1993 Keywords temporal. Sometimeago, I asked can anyone point me to a very good text on temporal logic? http://www-lp.doc.ic.ac.uk/UserPages/staff/ft/alp/net/exts/temporal.html

Temporal Logic Resources Appeared in Volume 6/2, May 1993 Keywords : temporal. mb108@cs.city.ac.uk omo Adelakun T K 27th January 1993 Sometime ago, I asked: can anyone point me to a very good text on temporal logic? Does anyone know of a temporal logic interpreter? Something along the lines of Prolog, or an extension? This is a summary of the responses I received. From: cmenzel@kbssun1.tamu.edu (Chris Menzel) J. van Bentham, The Logic of Time, Reidel, 1983 A model-theoretic investigation into the varieties of temporal ontologies and their logics. kono@csl.sony.co.jp Robert Goldblatt, CSLI Lecture Notes, Logic of Time and Computation, CSLI, Vol. 7, 1987 There are many temporal logic interpreters: 1.Tokio, based on interval temporal logic, which I wrote. It is supported by both an interpreter and a compiler. It is close to Tempura, but supports non-deterministic execution. M. Fujita and S. Kono and H. Tanaka, Tokio: LP Language based on Temporal Logic and its compilation to Prolog, Proc. of Int. Conf. on LP, London, July 1986 2. Temporal Prolog.

79. 499 Modal & Temporal Logic 499 Modal and temporal logic. 4th year/MAC course. Lecturers Michael Huthand Marek Sergot. Michael Huth gives the first half of the course. http://www-lp.doc.ic.ac.uk/UserPages/staff/mjs/teaching/499.html

499 Modal and temporal logic 4th year/MAC course. Lecturers: Michael Huth and Marek Sergot. Michael Huth gives the first half of the course. The first 7 lectures (based on Ian Hodkinson's slides) cover: syntax, semantics, Sahlqvist correspondence, p-morphisms, temporal logic. The next 3 lectures will present LTL and CTL model checking in NuSMV, used in hardware and software verification. Marek Sergot gives the second half of the course: soundness, completeness, and canonical models; non-normal (classical) systems and 'neighbourhood semantics'; epistemic logic and `grounded semantics' for multi-agent systems (based on slides by Alessio Lomuscio introduction to conditional logics; first-order modal logic (sketch). Examples (in particular, logics of knowledge and belief, obligation/duty, agency, and logics encountered in practical reasoning) will be used for illustration during the lectures. You can find material on Michael Huth's part of the course here NEW! The sheet for assessed coursework 2 is at the bottom of the page. Lecture notes Normal modal logics (Soundness and Completeness) (.ps)

80. TCS - Studies - T-79.146 Logic In Computer Science: Special Topics I Other Interesting Stuff. Formal methods Information and links Interesting bookson modal logic, temporal logic and verification of reactive systems. http://www.tcs.hut.fi/Studies/T-79.146/

TCS Studies / T-79.146 Logic in Computer Science: Special Topics I T-79.146 Logic in Computer Science: Special Topics I (2 cr) Spring 2003 General Information Lectures Tutorials Home assignments ... TOPI Previous years: [ Spring 2002 Spring 2001 Spring 2000 Spring 1999 ... Spring 1998 This is an advanced course on logic and its applications in computer science and engineering. Subjects covered this year are: modal logics (syntax, semantics, proof theory and computational properties) and applications of temporal logic in concurrent and distributed systems. General Information NEWS No lectures on Wed Feb 19 and no tutorial on Fri Feb 21 (because the lecturer is abroad). Lectures by Prof. Ilkka Niemelä : Wednesday 14-16, room TB353 Tutorials by M.Sc.(Tech.) Heikki Tauriainen : Fridays 9-10, room TB353 The course starts on Wed Jan 15 at 14.15 Course material Lecture notes. M. Fitting, Basic Modal Logic, Handbook of Logic in Artificial Intelligence and Logic Programming, Volume 1, Logical Foundations, 1993. E. Clarke and O. Grumberg and D. Peled, Model Checking, The MIT Press, 1999. (Chapters 1-4)

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