Geometry.Net - Science: Temporal Logic

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/
Temporal Logic Research
University of Greenwich. to CMS homepage temporal logic Research in the School ofComputing and Mathematical Sciences Publications in the temporal logic area
http://cms1.gre.ac.uk/research/temp_logic/
Temporal Logic
temporal logic for Specification. temporal logic is ordinary logic extended withtemporal operators (read henceforth) and (read eventually).
http://cs.wwc.edu/~aabyan/TL/

Extractions: Temporal logic is ordinary logic extended with temporal operators [] (read henceforth ) and (read eventually ). The formula [] P asserts that P is true now and at all future times, and the formula P asserts that P is true now or at some future time. Since P is eventually true if and only if it is not always false, P is equivalent to ~[]~ P Temporal logic, as it has been defined here, cannot formally specify things like average response time and probability of failure. However, it is useful for the specification of safety and liveness properties. Safety properties assert what the system is allowed to do, or equivalently, what it may not do. Safety properties are satisfied by a system which does nothing. Restriction to only producing correct answers is an example of a safety property. Liveness properties assert what the system must do. Termination is an example of a liveness property.
Temporal Logics
Without the addition of additional temporal operators, temporal logic cannot expressall regular expressions. Syntax. temporal logic and the Next time operator.
http://cs.wwc.edu/~aabyan/Logic/Temporal.html

Extractions: Connections Temporal logics are designed to express temporal progression. It is customary to add the operator [] with the interpretation determined by the logic. A second operator is the dual of the first i.e. A = ¬[]¬A and []A = ¬ ¬A. Figure 1 illustrates some readings of the formulas []A and A. Temporal logic plays an important role in the specification, derivation, and verification of programs as programs may be viewed as progressing through a sequence of states, a new state after each event in the system. They have a particularly useful role in the specification and verification of communication protocols and reactive systems. Propositional temporal logics have the finite model property making them useful for the derivation of programs from formal specifications. The derived model resembles a finite state machine hovever, the model accepts infinite strings and belongs to the class of w -automata. Without the addition of additional temporal operators, temporal logic cannot express all regular expressions.
Temporal Logic With Past Is Exponentially More Succinct
LSV. LSV, temporal logic with Past is Exponentially More Succinct. Whatis temporal logic with past? It is temporal logic where future
http://www.lsv.ens-cachan.fr/~markey/PLTL.php

Extractions: Abstract : The old question whether temporal logic with past-time modalities is exponentially more succinct than pure-future temporal logic has recently been answered positively It is temporal logic where future-time modalities, such as F sometimes in the future G always in the future U until "), ... are complemented with their past-time counterparts ( P or F for " once in the past H or G for " always in the past S or U for " since Yes. Indeed, specifications expressed in natural language often use references to events that occured in the past. One finds it natural to express that "every request is eventually granted" by G (request => F grant) Thus we woud like to express that "every grant is preceeded by a request" by the formula G (grant => F request) It is possible to express the property of formula (2) without past-time modalities, and write U Formula (3) only uses future modalities, and is equivalent to formula (2) when interpreted at the beginning of a path. This is a general pattern. Gabbay
A Temporal Logic For The Specification And Verification Of Distributed Behaviour
TU Braunschweig Informatik Abt. Programmierung A temporal logic for the Specificationand Verification of Distributed Behaviour. Peter Niebert Abstract.
http://www.cs.tu-bs.de/ips/niebert/Niebert1999-abstract_en.shtml

Extractions: [TU Braunschweig] [Informatik] [Abt. Programmierung] Peter Niebert Abstract In this work we develop a temporal logic with fixpoints for distributed processes or distributed systems. Here, we extend this approach to distributed processes, which represent the causal relation of events occurring in a run of a system as partial order. A key problem is the proper generalisation of the ``Next'' operator. Within a general framework we identify several syntactic subclasses of the logic. Both theoretical and pragmatic aspects of the resulting logics are investigated. Informatik-Bericht 99-02, TU Braunschweig Page provided by Thomas Firley firley@ips.cs.tu-bs.de
Temporal Logic
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z. temporal logic. Modallogic approaches to temporal logic.
http://www.seop.leeds.ac.uk/archives/win1999/entries/logic-temporal/

Extractions: A B C D ... Z The term Temporal Logic has been broadly used to cover all approaches to the representation of temporal information within a logical framework, and also more narrowly to refer specifically to the modal-logic type of approach introduced around 1960 by Arthur Prior under the name of Tense Logic and subsequently developed further by logicians and computer scientists. Applications of Temporal Logic include its use as a formalism for clarifying philosophical issues about time, as a framework within which to define the semantics of temporal expressions in natural language, as a language for encoding temporal knowledge in artificial intelligence, and as a tool for handling the temporal aspects of the execution of computer programs. The logical language of Tense Logic contains, in addition to the usual truth-functional operators, four modal operators with intended meanings as follows: P "It has at some time been the case that ..."
Introduction To Temporal Logic Propositional Checker
Introduction to temporal logic Propositional Checker by Hugh McGuire.Without too much ado, here's the Unixstyle manual-page for
http://www.cs.ucsb.edu/~mcguire/tl_sat/intro_to_impl.html

Extractions: Without too much ado, here's the Unix-style manual-page for this program (or actually, set of programs), comprising instructions and then examples of use. ( My dissertation provides more information and examples.) Click here if you want to get these programs (they are free). (This page was last updated 1996:June:22.)
GUP: TLC - Temporal Logic Checker
TLC temporal logic Checker. This is an Austrian - Hungarian joint projectto develop a temporal logic assertion checker. Ofiicial Project Page,
http://www.gup.uni-linz.ac.at/research/logic/index.php

Extractions: Description Debugging nondeterministic parallel programs is a difficult and tedious task. In this project we propose to investigate the use of program specifications , which can serve as enhanced debugging aids in existing parallel debugging tools. The principal idea is to formulate a specification of expected program behavior, translate this specification into runtime assertions , and check them during execution . With this sophisticated approach, the user may select a subset of all possible executions on which checking should be performed and collect for each check a consistent global state of the observed application.
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

Extractions: 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.
Temporal Logic From FOLDOC
temporal logic. logic An extension There are two types of temporal logicused branching time and linear time. The basic propositional
http://www.instantweb.com/foldoc/foldoc.cgi?temporal logic
Richard Zach A Complete First-order Temporal Logic Of Time With
A complete firstorder temporal logic of time with gaps. Theoretical ComputerScience 160 (1996) 241-270 (with Matthias Baaz and Alexander Leitsch).
http://www.ucalgary.ca/~rzach/papers/gaptime.html

Extractions: (with Matthias Baaz and Alexander Leitsch) Abstract: The first-order temporal logics with and o of time structures isomorphic to omega (discrete linear time) and trees of omega-segments (linear time with branching gaps) and some of its fragments are compared: The first is not recursively axiomatizable. For the second, a cut-free complete sequent calculus is given, and from this, a resolution system is derived by the method of Maslov. Download:
RR-2804 : Interactive Theorem Proving With Temporal Logic
Translate this page logo inria. RR-2804 - Interactive Theorem Proving with temporal logic. Abstract In this paper, we present a theorem prover for linear temporal logic.
http://www.inria.fr/rrrt/rr-2804.html
RR-0881 : Compiling Temporal Logic Specifications Into Observers
Translate this page logo inria. RR-0881 - Compiling temporal logic specifications into observers.Drissi-Kaitouni, O. - Jard, Claude Les rapports de cet auteur.
http://www.inria.fr/rrrt/rr-0881.html
A Nonmonotonic Temporal Logic And Its Kripke Semantics
A Nonmonotonic temporal logic and Its Kripke Semantics. FUJIWARA Thispaper proposes a logic for nonmonotonic temporal reasoning. The
http://www.ipsj.or.jp/members/JInfP/Eng/1401/article002.html

Extractions: Last Update¡§Tue Jun 19 17:31:48 2001 Journal of Information Processing Abstract Vol.14 No.01 - 002 Human commonsense reasoning is at the same time nonmonotonic and temporal. This paper proposes a logic for nonmonotonic temporal reasoning. The nonmonotonic temporal logic "autoepistemic temporal logic"(ATL) is an extension of both autoepistemic logic, a kind of nonmonotonic logic, and propositional temporal logic (PTL). A spatio-temporal logic ST5, which is suitable for reasoning about multiprocess networks, is also proposed, and a close relationship is exhibited between the semantics of ATL and ST5. Stable expansions of premises of a certain type are then characterized in terms of statewise autoepistemic stable expansions. The result may also provide a general approach to constructing nonmonotonic logics with possible-world semantics. Journal of Information Processing Contents Web Members Service Menu
Alur/Henzinger/Kupferman: Alternating Temporal Logic
Alternating temporal logic. Rajeev Alur, Thomas A. Henzinger, and OrnaKupferman temporal logic comes in two varieties lineartime
http://www.cis.upenn.edu/~alur/Focs97.html

Extractions: Rajeev Alur, Thomas A. Henzinger, and Orna Kupferman Temporal logic comes in two varieties: linear-time temporal logic assumes implicit universal quantification over all paths that are generated by system moves; branching-time temporal logic allows explicit existential and universal quantification over all paths. We introduce a third, more general variety of temporal logic: alternating-time temporal logic no matter how the environment behaves A preliminary version appears in the Proceedings of the 38th Annual IEEE Symposium on Foundations of Computer Science (FOCS'97), pp. 100-109, 1997. An extended version appears in Compositionality The Significant Difference, LNCS 1536, pp. 2360, Springer-Verlag, 1999.
IFCoLog Automata And Temporal Logic Societies | DFKI SB
Computational Logic IFCoLog is supported and coordinated by the CompulogNet Office at DFKI, Saarbrücken Automata and temporal logic.
http://www.ifcolog.org/Areas/Area4/

Extractions: by the Compulog Net Office at DFKI Automata and Temporal Logic Register a new Society Go back to Areas Page IFCoLog Main Page Feel free to add your institution or society to this list. Your entry will be checked and inserted automatically. e-mail us if you have any questions. admin@ifcolog.org Webpage-Maintainer: Webadmins : P.Franke, Sep.'99
Model Theory Of Temporal Logic
Model Theory of temporal logic. Part of this project is carried out aspart of the Graduiertenkolleg on language, information, and logics.
http://www.pst.informatik.uni-muenchen.de/projekte/proj-desc/modelltheorie-e.htm
Reglo Manual Pages -- 3.1 Temporal Logic
Up Go up to 3 Examples 3.1 temporal logic. Reglo was developped forprogramming of synchronous observers. Such an observer checks
http://www-verimag.imag.fr/~raymond/tools/reglo-manual/reglo-manual_14.html
Abstract For Interactive Theorem Proving With Temporal Logic
Interactive Theorem Proving with temporal logic Amy Felty and Laurent Théry,April. Journal of Symbolic Computation, 23(4)367397, April 1997.
http://www.site.uottawa.ca/~afelty/abstracts/jsc96.html

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