Public announcements under sheaves

  • Authors:
  • Kohei Kishida

  • Affiliations:
  • University of Amsterdam, The Netherlands

  • Venue:
  • JSAI-isAI'12 Proceedings of the 2012 international conference on New Frontiers in Artificial Intelligence
  • Year:
  • 2012

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Abstract

The goal of this article is to bring together the frameworks of model-update semantics for (propositional) public-announcement logic [9] and of sheaf semantics for first-order modal logic [2,10,14], and to thereby obtain a sheaf semantics for first-order public-announcement logic. The first attempt to extend dynamic epistemic logics to the first order was made by Kooi [15], who introduced terms to refer to epistemic agents, and an extension of public-announcement logic to the first order was briefly given by Ma [18]; both of these extensions used constant domains for interpreting first-order vocabulary. (A first-order extension of dynamic logic was given in [12,13], also with constant domains.) This article pushes ahead with these extensions by employing a sheaf structure, providing a progress toward a more flexible and useful treatment of first-order notions.