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Ideas for 'fragments/reports', 'A Structural Account of Mathematics' and 'reports of last days'

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2 ideas

5. Theory of Logic / E. Structures of Logic / 6. Relations in Logic

9561	The mathematics of relations is entirely covered by ordered pairs [Chihara]

5. Theory of Logic / K. Features of Logics / 2. Consistency

9552	Sentences are consistent if they can all be true; for Frege it is that no contradiction can be deduced [Chihara]