Combining Texts

Ideas for 'On the Question of Absolute Undecidability', 'The Logical Basis of Metaphysics' and 'The Foundations of Mathematics'

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4 ideas

5. Theory of Logic / D. Assumptions for Logic / 4. Identity in Logic

13427

Either 'a = b' vacuously names the same thing, or absurdly names different things [Ramsey]

5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / c. not

18801

Classical negation is circular, if it relies on knowing negation-conditions from truth-conditions [Dummett]

5. Theory of Logic / K. Features of Logics / 5. Incompleteness

17894

We have no argument to show a statement is absolutely undecidable [Koellner]

5. Theory of Logic / L. Paradox / 1. Paradox

13334

Contradictions are either purely logical or mathematical, or they involved thought and language [Ramsey]