Parity Games and Automata for Game Logic

  • Helle Hvid Hansen
  • Clemens KupkeEmail author
  • Johannes Marti
  • Yde Venema
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10669)


Parikh’s game logic is a PDL-like fixpoint logic interpreted on monotone neighbourhood frames that represent the strategic power of players in determined two-player games. Game logic translates into a fragment of the monotone \(\mu \)-calculus, which in turn is expressively equivalent to monotone modal automata. Parity games and automata are important tools for dealing with the combinatorial complexity of nested fixpoints in modal fixpoint logics, such as the modal \(\mu \)-calculus. In this paper, we (1) discuss the semantics a of game logic over neighbourhood structures in terms of parity games, and (2) use these games to obtain an automata-theoretic characterisation of the fragment of the monotone \(\mu \)-calculus that corresponds to game logic. Our proof makes extensive use of structures that we call syntax graphs that combine the ease-of-use of syntax trees of formulas with the flexibility and succinctness of automata. They are essentially a graph-based view of the alternating tree automata that were introduced by Wilke in the study of modal \(\mu \)-calculus.


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Copyright information

© Springer International Publishing AG 2018

Authors and Affiliations

  • Helle Hvid Hansen
    • 1
  • Clemens Kupke
    • 2
    Email author
  • Johannes Marti
    • 2
  • Yde Venema
    • 3
  1. 1.Delft University of TechnologyDelftThe Netherlands
  2. 2.University of StrathclydeGlasgowUK
  3. 3.University of AmsterdamAmsterdamThe Netherlands

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