Epistemic Games in Modal Logic: Joint Actions, Knowledge and Preferences all together

Authors Emiliano Lorini, François Schwarzentruber, Andreas Herzig

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Emiliano Lorini
François Schwarzentruber
Andreas Herzig

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Emiliano Lorini, François Schwarzentruber, and Andreas Herzig. Epistemic Games in Modal Logic: Joint Actions, Knowledge and Preferences all together. In Information processing, rational belief change and social interaction. Dagstuhl Seminar Proceedings, Volume 9351, pp. 1-20, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2009)


We present in this work a sound and complete modal logic called EDLA (Epistemic Dynamic Logic of Agency) integrating the concepts of joint action, preference and knowledge and enabling to reason about epistemic games in strategic form. We provide complexity results for EDLA. In the second part of the paper, we study in EDLA the epistemic and rationality conditions of some classical solution concepts like Nash equilibrium and Iterated Deletion of Strictly Dominated Strategies (IDSDS). In the last part of the paper we combine EDLA with Dynamic Epistemic Logic (DEL) in order to model epistemic game dynamics.
  • Modal logic
  • game theory
  • epistemic games


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