Combining Philosophers

All the ideas for Hilbert,D/Ackermann,W, Dicaearchus and Hugh MacColl

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

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3 ideas

4. Formal Logic / C. Predicate Calculus PC / 1. Predicate Calculus PC

17750

The first clear proof of the consistency of the first order predicate logic was in 1928 [Hilbert/Ackermann, by Walicki]

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]

17. Mind and Body / E. Mind as Physical / 3. Eliminativism

5997	Dicaearchus said soul does not exist, but is just a configuration of the body [Dicaearchus, by Fortenbaugh]