Non-well-founded-Type Spaces |
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Authors: | Aviad Heifetz |
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Institution: | School of Mathematical Sciences, Tel Aviv University, Tel Aviv, Israel |
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Abstract: | In a Harsanyi-types space, states become circular, self-referring objects if one tries to make the types an explicit part of the states' structure. To make such a definition rigorous, we suggest the use ofnon-well-founded setsthat may be members of themselves, members of their members, etc. We show how to define the non-well-founded version of a types space in a way that preserves nature and the mutual uncertainties. This non-well-founded version is isomorphic to a beliefs subspace of the Mertens–Zamir hierarchic construction, although its definition involves no inductive process.Journal of Economic LiteratureClassification Number: D82. |
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