Combining Texts

Ideas for 'The Mental Life of Some Machines', 'Principia Mathematica' and 'Intros to Russell's 'Essays in Analysis''

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3 ideas

4. Formal Logic / F. Set Theory ST / 4. Axioms for Sets / p. Axiom of Reducibility

21720

Russell saw Reducibility as legitimate for reducing classes to logic [Linsky,B on Russell/Whitehead]

4. Formal Logic / F. Set Theory ST / 8. Critique of Set Theory

10044

Russell denies extensional sets, because the null can't be a collection, and the singleton is just its element [Russell/Whitehead, by Shapiro]

18208

We regard classes as mere symbolic or linguistic conveniences [Russell/Whitehead]