Combining circumscription and modal logic

  • Authors:
  • Jacques Wainer

  • Affiliations:
  • Dept of Computer Science, University of Colorado, Boulder, CO

  • Venue:
  • AAAI'92 Proceedings of the tenth national conference on Artificial intelligence
  • Year:
  • 1992

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Abstract

This paper discusses the logic LKM which extends circumscription into an epistemic domain. This extension will allow us to define circumscription of predicates that appear within the context of a modal operator. In fact, LKM can be seen as a method of extending any first-order nonmonotonic logic whose semantic definition is based on a partial-order among models, into a new nonmonotonic logic defined for a modal language, whose modal operator (K) follows an undedying S5 or weak-S5 semantics. One interesting use of this nonmonotonic logic is to model nonmonotonic aspects of the communication between agents.