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

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2 ideas

5. Theory of Logic / G. Quantification / 2. Domain of Quantification

10832

'∀x x=x' only means 'everything is identical to itself' if the range of 'everything' is fixed [Boolos]

5. Theory of Logic / G. Quantification / 5. Second-Order Quantification

5740	Second-order logic needs second-order variables and quantification into predicate position [Melia]