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Ideas for 'fragments/reports', 'On Second-Order Logic' and 'Logical Atomism'

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5. Theory of Logic / K. Features of Logics / 1. Axiomatisation

6109	Some axioms may only become accepted when they lead to obvious conclusions [Russell]

5. Theory of Logic / K. Features of Logics / 4. Completeness

10834

Weak completeness: if it is valid, it is provable. Strong: it is provable from a set of sentences [Boolos]

5. Theory of Logic / K. Features of Logics / 6. Compactness

13841

Why should compactness be definitive of logic? [Boolos, by Hacking]