The unit-level-core for multi-choice games: the replicated core for TU games |
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Authors: | Yan-An Hwang Yu-Hsien Liao |
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Affiliation: | (1) Department of Economics, Brown University, Providence, USA;(2) IMDEA‐Social Sciences, Madrid, Spain; |
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Abstract: | This note extends the solution concept of the core for traditional transferable-utility (TU) games to multi-choice TU games, which we name the unit-level-core. It turns out that the unit-level-core of a multi-choice TU game is a “replicated subset” of the core of a corresponding “replicated” TU game. We propose an extension of the theorem of Bondareva (Probl Kybern 10:119–139, 1963) and Shapley (Nav Res Logist Q 14:453–460, 1967) to multi-choice games. Also, we introduce the reduced games for multi-choice TU games and provide an axiomatization of the unit-level-core on multi-choice TU games by means of consistency and its converse. |
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