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In computability theory, Kleene's recursion theorems are a pair of fundamental results about the application of computable functions to their own descriptions. The theorems were first proved by Stephen Kleene in 1938 and appear in his 1952 book ''Introduction to Metamathematics''. The two recursion theorems can be applied to construct fixed points of certain operations on computable functions, to generate quines, and to construct functions defined via recursive definitions. The application to construction of a fixed point of any computable function is known as Rogers' theorem and is due to Hartley Rogers, Jr. (Rogers, 1967). == Notation == The statement of the theorems refers to an admissible numbering of the partial recursive functions, such that the function corresponding to index is . In programming terms, is the program and its semantic denotation. 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Kleene's recursion theorem」の詳細全文を読む スポンサード リンク
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