Refining and Delegating Strategic Ability in ATL
Abstract
We propose extending Alternating-time Temporal Logic (ATL) by an operator <i refines-to G> F to express that agent i can distribute its powers to a set of sub-agents G in a way which satisfies ATL condition f on the strategic ability of the coalitions they may form, possibly together with others agents. We prove the decidability of model-checking of formulas whose subformulas with this operator as the main connective have the form <i1 refines-to G1>...<im refines-to Gm> f, with no further occurrences of this operator in f.
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