Once and for all

Orna Kupferman*, Amir Pnueli

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

47 Scopus citations

Abstract

It has long been known that past-time operators add no expressive power to linear temporal logics. In this paper, we consider the extension of branching temporal logics with past-time operators. Two possible views regarding the nature of past in a branching-time model induce two different such extensions. In the first view, past is branching and each moment in time may have several possible futures and several possible pasts. In the second view, past is linear and each moment in time may have several possible futures and a unique past. Both views assume that past is finite. We discuss the practice of these extensions as specification languages, characterize their expressive power, and examine the complexity of their model-checking and satisfiability problems.

Original languageAmerican English
Pages (from-to)25-35
Number of pages11
JournalProceedings - Symposium on Logic in Computer Science
StatePublished - 1995
Externally publishedYes
EventProceedings of the 10th Annual IEEE Symposium on Logic in Computer Science - San Diego, CA, USA
Duration: 26 Jun 199529 Jun 1995

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