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International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems, 1996
We add a binary operator ≥ to the logical language, with intended meaning of φ<ψ: ‘φ is at least as likely, probable, or trustworthy, as ψ’. The operator ≥ is interpreted on Kripke structures, making it possible to define the standard necessity operator □ in terms of ≥.
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We add a binary operator ≥ to the logical language, with intended meaning of φ<ψ: ‘φ is at least as likely, probable, or trustworthy, as ψ’. The operator ≥ is interpreted on Kripke structures, making it possible to define the standard necessity operator □ in terms of ≥.
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Journal of Philosophy, 1986
AbstractIn the first part of this chapter, I sketch out three grades of modal realism. After developing modal realism, I examine David Lewis's modal theory. I argue that Lewis's theory satisfies none of the grades of modal realism, and that it is really a case of modal reductionism. In particular, I demonstrate that Counterpart Theory is a rejection of
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AbstractIn the first part of this chapter, I sketch out three grades of modal realism. After developing modal realism, I examine David Lewis's modal theory. I argue that Lewis's theory satisfies none of the grades of modal realism, and that it is really a case of modal reductionism. In particular, I demonstrate that Counterpart Theory is a rejection of
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