Questions tagged [lo.logic]
first-order and higher-order logic, model theory, set theory, proof theory, computability theory, formal languages, definability, interplay of syntax and semantics, constructive logic, intuitionism, philosophical logic, modal logic, completeness, Gödel incompleteness, decidability, undecidability, theories of truth, truth revision, consistency.
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Bounding proofs of transfinite induction
Let $\phi$ be a "reasonable" formula in the language of first-order arithmetic expressing some amount of transfinite induction along a given (index for a) computable linear order; my default ...
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