Combining Texts

All the ideas for 'Presentism and Properties', 'Symbolic Reasoning' and 'Whitehead and the Rise of Modern Logic'

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

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4 ideas

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

21548

The null class is the class with all the non-existents as its members [MacColl, by Lackey]

5. Theory of Logic / A. Overview of Logic / 7. Second-Order Logic

13639

Quine says higher-order items are intensional, and lack a clearly defined identity relation [Quine, by Shapiro]

6. Mathematics / C. Sources of Mathematics / 6. Logicism / b. Type theory

21557

Russell confused use and mention, and reduced classes to properties, not to language [Quine, by Lackey]

27. Natural Reality / D. Time / 1. Nature of Time / h. Presentism

14409

I am a presentist, and all language and common sense supports my view [Bigelow]