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Sub-models for interactive unawareness. (English) Zbl 1378.91104
Summary: We propose a notion of a sub-model for each agent at each state in the model of interactive unawareness by A. Heifetz et al. [J. Econ. Theory 130, No. 1, 78–94 (2006; Zbl 1141.91598)]. Presuming that each agent is fully cognizant of his sub-model causes no difficulty and fully describes his knowledge and his beliefs about the knowledge and awareness of others. We use sub-models to motivate the HMS conditions on possibility correspondences.
91B44 Economics of information
03B42 Logics of knowledge and belief (including belief change)
91A26 Rationality and learning in game theory
Full Text: DOI
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