Combining Philosophers

Ideas for Herodotus, Peter Koellner and Brian Ellis

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3 ideas

4. Formal Logic / D. Modal Logic ML / 3. Modal Logic Systems / h. System S5

13604

Real possibility and necessity has the logic of S5, which links equivalence classes of worlds of the same kind [Ellis]

4. Formal Logic / F. Set Theory ST / 1. Set Theory

17884

Mathematical set theory has many plausible stopping points, such as finitism, and predicativism [Koellner]

17893

'Reflection principles' say the whole truth about sets can't be captured [Koellner]