Combining Texts

All the ideas for 'fragments/reports', 'Elucidation of some points in E.Schrder' and 'How to Russell a Frege-Church'

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

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6 ideas

4. Formal Logic / F. Set Theory ST / 3. Types of Set / b. Empty (Null) Set

14238

A class is an aggregate of objects; if you destroy them, you destroy the class; there is no empty class [Frege]

5. Theory of Logic / F. Referring in Logic / 2. Descriptions / c. Theory of definite descriptions

11989

For Russell, expressions dependent on contingent circumstances must be eliminated [Kaplan]

10. Modality / E. Possible worlds / 3. Transworld Objects / d. Haecceitism

11990

'Haecceitism' says that sameness or difference of individuals is independent of appearances [Kaplan]

9668	'Haecceitism' is common thisness under dissimilarity, or distinct thisnesses under resemblance [Kaplan]

11991

If quantification into modal contexts is legitimate, that seems to imply some form of haecceitism [Kaplan]

13. Knowledge Criteria / E. Relativism / 2. Knowledge as Convention

1556	By nature people are close to one another, but culture drives them apart [Hippias]