Combining Texts
Ideas for
'The Eumenides', 'Philosophical Logic' and 'The Condemnation of 1277'
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6 ideas
10. Modality / A. Necessity / 4. De re / De dicto modality
15420
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De re modality seems to apply to objects a concept intended for sentences [Burgess]
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10. Modality / A. Necessity / 6. Logical Necessity
15419
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General consensus is S5 for logical modality of validity, and S4 for proof [Burgess]
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15417
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Logical necessity has two sides - validity and demonstrability - which coincide in classical logic [Burgess]
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10. Modality / B. Possibility / 1. Possibility
22142
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In future, only logical limits can be placed on divine omnipotence [Anon (Par), by Boulter]
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10. Modality / B. Possibility / 8. Conditionals / a. Conditionals
15422
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Three conditionals theories: Materialism (material conditional), Idealism (true=assertable), Nihilism (no truth) [Burgess]
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15423
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It is doubtful whether the negation of a conditional has any clear meaning [Burgess]
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