Combining Philosophers

Ideas for Hermarchus, John Stuart Mill and Euclid

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2 ideas

4. Formal Logic / C. Predicate Calculus PC / 2. Tools of Predicate Calculus / c. Derivations rules of PC

13907

If you pick an arbitrary triangle, things proved of it are true of all triangles [Euclid, by Lemmon]

4. Formal Logic / F. Set Theory ST / 7. Natural Sets

8625	What physical facts could underlie 0 or 1, or very large numbers? [Frege on Mill]