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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.
MSC:
91B44 Economics of information
03B42 Logics of knowledge and belief (including belief change)
91A26 Rationality and learning in game theory
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