Conflicting obligations in multi-agent deontic logic

  • Authors:
  • Barteld Kooi;Allard Tamminga

  • Affiliations:
  • Vakgroep Theoretische Filosofie, Faculteit der Wijsbegeerte, Rijksuniversiteit Groningen, Groningen, The Netherlands;Vakgroep Theoretische Filosofie, Faculteit der Wijsbegeerte, Rijksuniversiteit Groningen, Groningen, The Netherlands

  • Venue:
  • DEON'06 Proceedings of the 8th international conference on Deontic Logic and Artificial Normative Systems
  • Year:
  • 2006

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Abstract

Extending John Horty's multi-agent deontic logic to moral reasoning with subjective utilities, we provide a language and semantics to study moral reasoning with sentences like ‘Group ${\ensuremath{\mathcal{G}}}$ of agents ought see to it that φ in the interest of group ${\ensuremath{\mathcal{F}}}$'. We illustrate our deontic logic with a new formal analysis of the Prisoner's Dilemma, thereby showing that games can be studied fruitfully with our deontic logic. Finally, we prove a characterization theorem on conflicting obligations.