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Ideas for 'fragments/reports', 'fragments/reports' and 'Frege versus Cantor and Dedekind'

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5 ideas

18. Thought / E. Abstraction / 2. Abstracta by Selection

9981	Abstraction is 'logical' if the sense and truth of the abstraction depend on the concrete [Tait]

9982	Cantor and Dedekind use abstraction to fix grammar and objects, not to carry out proofs [Tait]

18. Thought / E. Abstraction / 7. Abstracta by Equivalence

9985	Abstraction may concern the individuation of the set itself, not its elements [Tait]

18. Thought / E. Abstraction / 8. Abstractionism Critique

9972	Why should abstraction from two equipollent sets lead to the same set of 'pure units'? [Tait]

9980	If abstraction produces power sets, their identity should imply identity of the originals [Tait]