Combining Texts

All the ideas for 'The Problem of Empty Names', 'Later Letters to Dedekind' and 'Commentary on 'Posterior Analytics''

expand these ideas     |    start again     |     specify just one area for these texts

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3 ideas

4. Formal Logic / F. Set Theory ST / 4. Axioms for Sets / a. Axioms for sets

17831

Cantor gives informal versions of ZF axioms as ways of getting from one set to another [Cantor, by Lake]

5. Theory of Logic / F. Referring in Logic / 1. Naming / e. Empty names

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Unreflectively, we all assume there are nonexistents, and we can refer to them [Reimer]

9. Objects / B. Unity of Objects / 2. Substance / b. Need for substance

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By comparing qualities and features, reason can gradually infer the nature of substance [Grosseteste]