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Results tagged with set-theory
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user 103195
forcing, large cardinals, descriptive set theory, infinite combinatorics, cardinal characteristics, forcing axioms, ultrapowers, measures, reflection, pcf theory, models of set theory, axioms of set theory, independence, axiom of choice, continuum hypothesis, determinacy, Borel equivalence relations, Boolean-valued models, embeddings, orders, relations, transfinite recursion, set theory as a foundation of mathematics, the philosophy of set theory.
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Description of all total recursive functions where operator is effective?
What is a description of all total recursive functions $g(x)$ for which the operator$$\Phi_g: \mathcal{F}_2 \to \mathcal{F}_1$$defined by the formula$$\Phi_g(f)(x) := g(\mu y(f(x, y) = 0))$$is effecti …
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