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Ideas for 'On the Question of Absolute Undecidability', 'Concepts' and 'Frege's Concept of Numbers as Objects'

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2 ideas

5. Theory of Logic / F. Referring in Logic / 1. Naming / d. Singular terms
An expression refers if it is a singular term in some true sentences [Wright,C, by Dummett]
5. Theory of Logic / K. Features of Logics / 5. Incompleteness
We have no argument to show a statement is absolutely undecidable [Koellner]