Combining Texts

Ideas for 'The Logic of Boundaryless Concepts', 'Grundgesetze der Arithmetik 2 (Basic Laws)' and 'Epistemic Norms'

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2 ideas

9. Objects / B. Unity of Objects / 3. Unity Problems / e. Vague objects

9891	The first demand of logic is of a sharp boundary [Frege]

9389	Vague membership of sets is possible if the set is defined by its concept, not its members [Rumfitt]