资源论文Belief Update without Compactness in Non-finitary Languages

Belief Update without Compactness in Non-finitary Languages

2019-10-08 | |  86 |   36 |   0

Abstract The main paradigms of belief change require the background logic to be Tarskian and fifinitary. We look at belief update when the underlying logic is not necessarily fifinitary. We show that in this case the classical construction for KM update does not capture all the rationality postulates for KM belief update. Indeed, this construction, being fully characterised by a subset of the KM update postulates, is weaker. We explore the reason behind this, and subsequently provide an alternative constructive accounts of belief update which is characterised by the full set of KM postulates in this more general framework

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