Combining Texts

All the ideas for 'Elucidation of some points in E.Schröder', 'Review: Meinong 'Uber die Stellung...'' and 'Phil of Mathematics: why nothing works'

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 / 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]

6. Mathematics / C. Sources of Mathematics / 1. Mathematical Platonism / b. Against mathematical platonism

3663	How can you contemplate Platonic entities without causal transactions with them? [Putnam]

9. Objects / A. Existence of Objects / 4. Impossible objects

21547

On Meinong's principles 'the existent round square' has to exist [Russell]