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Ideas for 'fragments/reports', 'Ontology and Mathematical Truth' and 'What Does It Take to Refer?'

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2 ideas

4. Formal Logic / E. Nonclassical Logics / 6. Free Logic

10455

Free logic at least allows empty names, but struggles to express non-existence [Bach]

4. Formal Logic / F. Set Theory ST / 1. Set Theory

9967	'Impure' sets have a concrete member, while 'pure' (abstract) sets do not [Jubien]