• Kleene's recursion theorems are a pair of fundamental results about the application of computable functions to their own descriptions. The theorems were...
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  • Recursion theorem can refer to: The recursion theorem in set theory Kleene's recursion theorem, also called the fixed point theorem, in computability...
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  • Thumbnail for Stephen Cole Kleene
    after him: Kleene hierarchy, Kleene algebra, the Kleene star (Kleene closure), Kleene's recursion theorem and the Kleene fixed-point theorem. He also invented...
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  • first incompleteness theorem Tarski's undefinability theorem Halting problem Kleene's recursion theorem Diagonalization (disambiguation) This disambiguation...
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  • calculus Church-Rosser theorem Calculus of constructions Combinatory logic Post correspondence problem Kleene's recursion theorem Recursively enumerable...
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  • Q_{e}(x)=\varphi _{a}(x)} when e ∉ P {\displaystyle e\notin P} . By Kleene's recursion theorem, there exists e {\displaystyle e} such that φ e = Q e {\displaystyle...
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  • (g42) ((lambda (x y) (+ x y)) 3 g42)). Currying Kleene's recursion theorem Partial evaluation Kleene, S. C. (1936). "General recursive functions of natural...
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  • Thumbnail for Quine (computing)
    Turing-complete programming language, as a direct consequence of Kleene's recursion theorem. For amusement, programmers sometimes attempt to develop the shortest...
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  • results about undecidable sets in recursion theory. Kleene (1943) presented a proof of Gödel's incompleteness theorem using basic results of computability...
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  • Kanamori–McAloon theorem (mathematical logic) Kirby–Paris theorem (proof theory) Kleene's recursion theorem (recursion theory) König's theorem (set theory...
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  • computability theory, by applying Kleene's recursion theorem. These results are not equivalent theorems; the Knaster–Tarski theorem is a much stronger result...
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  • Gödel's incompleteness theorem marks not only a milestone in recursion theory and proof theory, but has also led to Löb's theorem in modal logic. The method...
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  • Computability theory, also known as recursion theory, is a branch of mathematical logic, computer science, and the theory of computation that originated...
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  • yet developed in 1934. The diagonal lemma is closely related to Kleene's recursion theorem in computability theory, and their respective proofs are similar...
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  • Thumbnail for Recursion (computer science)
    recursion is a method of solving a computational problem where the solution depends on solutions to smaller instances of the same problem. Recursion solves...
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  • variables of a lambda expression, M, is denoted as FV(M) and is defined by recursion on the structure of the terms, as follows: FV(x) = {x}, where x is a variable...
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  • Thumbnail for Rule of inference
    inferential steps and often use various rules of inference to establish the theorem they intend to demonstrate. Rules of inference are definitory rules—rules...
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  • of primitive recursion as those do not provide a mechanism for "infinite loops" (undefined values). A normal form theorem due to Kleene says that for...
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  • mathematics before, but the construction of primitive recursion is traced back to Richard Dedekind's theorem 126 of his Was sind und was sollen die Zahlen? (1888)...
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  • machine, or λ-function, or carefully invoke recursion axioms, or at best, cleverly invoke various theorems of computability theory. But because the computability...
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  • 1965, p. 115 Lucas 2021. Kleene 1952, p. 382. Rosser, "Informal Exposition of Proofs of Gödel's Theorem and Church's Theorem", reprinted in Davis 1965...
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  • and projection functions, and is closed under composition, primitive recursion, and the μ operator. Equivalently, computable functions can be formalized...
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  • studied because several important results like the Kleene's recursion theorem and Rice's theorem, which were originally proven for the Gödel-numbered...
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  • sequences, and structures. recursion theorem 1.  Master theorem (analysis of algorithms) 2.  Kleene's recursion theorem recursive definition A definition...
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  • Darlington developed the functional language NPL. NPL was based on Kleene Recursion Equations and was first introduced in their work on program transformation...
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  • p {\displaystyle p} can get access to its own source code by Kleene's recursion theorem). If this eventually returns true, then this first task continues...
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  • of creating a malformed program. In computational theory, Kleene's second recursion theorem provides a form of code-is-data, by proving that a program...
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  • Thumbnail for Ordinal number
    one function satisfying the recursion formula up to and including α. Here is an example of definition by transfinite recursion on the ordinals (more will...
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  • Thumbnail for Least fixed point
    not converge with the least fixed point. Unfortunately, whereas Kleene's recursion theorem shows that the least fixed point is effectively computable, the...
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  • impossible by Alonzo Church and Alan Turing in 1936. By the completeness theorem of first-order logic, a statement is universally valid if and only if it...
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