Modal fixed-point logic and changing models

  • Authors:
  • Johan Van Benthem;Daisuke Ikegami

  • Affiliations:
  • Universiteit van Amsterdam, Amsterdam, The Netherlands;Universiteit van Amsterdam, Amsterdam, The Netherlands

  • Venue:
  • Pillars of computer science
  • Year:
  • 2008

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Abstract

We show that propositional dynamic logic and the modal µ-calculus are closed under product modalities, as defined in current dynamic-epistemic logics. Our analysis clarifies the latter systems, while also raising some new questions about fixed-point logics.