Combining Texts

All the ideas for 'The Secret Connexion', 'Elucidation of some points in E.Schrder' and 'Explanation in Mathematics'

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3 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]

9. Objects / D. Essence of Objects / 7. Essence and Necessity / b. Essence not necessities

13166

Essences are no use in mathematics, if all mathematical truths are necessary [Mancosu]

26. Natural Theory / C. Causation / 9. General Causation / a. Constant conjunction

8338	A phenomenalist about objects has to be a regularity theorist about causation [Strawson,G]