Modal logic
A Modal Theory of Arrows. Arrow Logics I
JELIA '92 Proceedings of the European Workshop on Logics in AI
Alternating-time Temporal Logic
FOCS '97 Proceedings of the 38th Annual Symposium on Foundations of Computer Science
Embedding Alternating-time Temporal Logic in Strategic Logic of Agency
Journal of Logic and Computation
A Logical Analysis of the Interaction between `Obligation-to-do' and `Knowingly Doing'
DEON '08 Proceedings of the 9th international conference on Deontic Logic in Computer Science
A Complete STIT Logic for Knowledge and Action, and Some of Its Applications
Declarative Agent Languages and Technologies VI
A logic for reasoning about counterfactual emotions
IJCAI'09 Proceedings of the 21st international jont conference on Artifical intelligence
A Dynamic Logic of Agency I: STIT, Capabilities and Powers
Journal of Logic, Language and Information
Information and Computation
A logical analysis of commitment dynamics
DEON'10 Proceedings of the 10th international conference on Deontic logic in computer science
A logic for reasoning about counterfactual emotions
Artificial Intelligence
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We provide a Kripke semantics for a STIT logic with the "next" operator. As the atemporal group STIT is undecidable and unaxiomatizable, we are interested in strict fragments of atemporal group STIT. First we prove that the satisfiability problem of a formula of the fragment made up of individual coalitions plus the grand coalition is also NEXPTIME-complete. We then generalize this result to a fragment where coalitions are in a given lattice. We also prove that if we restrict the language to nested coalitions the satisfiability problem is NP-complete if the number of agents is fixed and PSPACEcomplete if the number of agents is variable. Finally we embed individual STIT with the "next" operator into a fragment of atemporal group STIT.