Paper: Winning Regions of Higher-Order Pushdown Games (at LICS 2008)

Authors: Arnaud Carayol Matthew Hague Antoine Meyer C.-H. Luke Ong Olivier Serre

Abstract

In this paper we consider parity games defined by higher-order pushdown automata. These automata generalise pushdown automata by the use of higher-order stacks, which are nested "stack of stacks" structures. Representing higher-order stacks as well-bracketed words in the usual way, we show that the winning regions of these games are regular sets of words. Moreover a finite automaton recognising this region can be effectively computed.A novelty of our work are abstract pushdown processes which can be seen as (ordinary) pushdown automata but with an infinite stack alphabet. We use the device to give a uniform presentation of our results.From our main result on winning regions of parity games we derive a solution to the Modal Mu-Calculus Global Model-Checking Problem for higher-order pushdown graphs as well as for ranked trees generated by higher-order safe recursion schemes.

BibTeX

  @InProceedings{CarayolHagueMeyerOn-WinningRegionsofHig,
    author = 	 {Arnaud Carayol and Matthew Hague and Antoine Meyer and C.-H. Luke Ong and Olivier Serre},
    title = 	 {Winning Regions of Higher-Order Pushdown Games},
    booktitle =  {Proceedings of the Twenty-Third Annual IEEE Symposium on Logic in Computer Science (LICS 2008)},
    year =	 {2008},
    month =	 {June}, 
    pages =      {193--204},
    location =   {Pittsburgh, PA, USA}, 
    publisher =	 {IEEE Computer Society Press}
  }