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• Epistemic relativization<br />

• What does (6a) mean?<br />

Informative pps and ∂<br />

(6) a. a pp φ through ψ iff, for any agent x (not necessarily = a)<br />

if Belx[Admaψ] then Belx[Belaφ].<br />

Intuitive paraphrase: each time a can safely be taken as believing<br />

that ψ is (at least) possible, she can safely be considered as<br />

believing that φ.<br />

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