From Coalition Logic to STIT

  • Authors:
  • Jan Broersen;Andreas Herzig;Nicolas Troquard

  • Affiliations:
  • Department of Information and Computing Sciences, Universiteit Utrecht, Utrecht, The Netherlands;Institut de Recherche en Informatique de Toulouse, Université Paul Sabatier, Toulouse, France;Institut de Recherche en Informatique de Toulouse, Université Paul Sabatier, Toulouse, France and Laboratorio di Ontologia Applicata, Università degli Studi di Trento, Trento, Italy

  • Venue:
  • Electronic Notes in Theoretical Computer Science (ENTCS)
  • Year:
  • 2006

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Abstract

STIT is a logic of agency that has been proposed in the nineties in the domain of philosophy of action. It is the logic of constructions of the form ''agent a sees to it that @f''. We believe that STIT theory may contribute to the logical analysis of multiagent systems. To support this claim, in this paper we show that there is a close relationship with more recent logics for multiagent systems. We focus on Pauly's Coalition Logic and the logic of the cstit operator, as described by Horty. After a brief presentation of Coalition Logic and a discrete-time version (including a next operator) of the STIT framework, we introduce a translation from Coalition Logic to the discrete STIT logic, and prove that it is correct.