Combining Philosophers

All the ideas for Douglas Lackey, Hilbert,D/Ackermann,W and Amphis

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

4 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]
5. Theory of Logic / L. Paradox / 5. Paradoxes in Set Theory / b. Cantor's paradox
21554 Sets always exceed terms, so all the sets must exceed all the sets [Lackey]
5. Theory of Logic / L. Paradox / 5. Paradoxes in Set Theory / c. Burali-Forti's paradox
21553 It seems that the ordinal number of all the ordinals must be bigger than itself [Lackey]
22. Metaethics / C. The Good / 1. Goodness / a. Form of the Good
3032 I can form no notion of what the good is [Amphis]