Unawareness with ‘possible’ possible worlds
AbstractLogical structures for modeling agents’ reasoning about unawareness are presented where it can hold simultaneously that: (i) agents’ beliefs about whether they are fully aware need not be veracious with partitional information; and (ii) the agent is fully aware if and only if she is aware of a fixed domain of formulae. In light of (ii), all states are deemed “possible”. Semantics operate in two stages, with belief in the second stage determined by truth in the first stage. Characterization theorems show that, without the first stage, the structures validate the same conditions as those of Halpern and Rego (2009a).
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Bibliographic InfoPaper provided by Grantham Research Institute on Climate Change and the Environment in its series Grantham Research Institute on Climate Change and the Environment Working Papers with number 69.
Date of creation: Dec 2011
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