Expressiveness of propositional projection temporal logic with star

  • Authors:
  • Cong Tian;Zhenhua Duan

  • Affiliations:
  • -;-

  • Venue:
  • Theoretical Computer Science
  • Year:
  • 2011

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Abstract

This paper investigates the expressiveness of Propositional Projection Temporal Logic with Star (PPTL*). To this end, Buchi automata and @w-regular expressions are first extended as Stutter Buchi Automata (SBA) and Extended Regular Expressions (ERE) to include both finite and infinite strings. Further, by equivalent transformations among PPTL* formulas, SBAs and EREs, PPTL* is proved to represent exactly the full regular language. Moreover, some fragments of PPTL* are characterized, and finally, PPTL* and its fragments are classified into five different language classes.