翻訳と辞書 Words near each other ・ Fragile X-associated tremor/ataxia syndrome ・ Fragile/Jirenma ・ Fragilis ・ Fragility ・ Fragility (disambiguation) ・ Fragility Tour ・ Fragilysin ・ Fragipan ・ Fragiscutum ・ Fragiskos Alvertis ・ Fragkista ・ Fragma ・ Fragmen ・ Fragment ・ Fragment (computer graphics) ・ Fragment (logic) ・ Fragment (novel) ・ Fragment 1/04 ・ Fragment 2/04 ・ Fragment antigen-binding ・ Fragment bid ・ Fragment crystallizable region ・ Fragment Factory ・ Fragment from the tomb of Nikarete ・ Fragment identifier ・ Fragment molecular orbital ・ Fragment of a Crucifixion ・ Fragment of a Novel ・ Fragment of Fear ・ Fragment on the Arab Conquests Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Fragment (logic) ： ウィキペディア英語版 Fragment (logic) In mathematical logic, a fragment of a logical language or theory is a subset of this logical language obtained by imposing syntactical restrictions on the language.〔.〕 Hence, the well-formed formulae of the fragment are a subset of those in the original logic. However, the semantics of the formulae in the fragment and in the logic coincide, and any formula of the fragment can be expressed in the original logic. The computational complexity of tasks such as satisfiability or model checking for the logical fragment can be no higher than the same tasks in the original logic, as there is a reduction from the first problem to the other. An important problem in computational logic is to determine fragments of well-known logics such as first-order logic which are as expressive as possible yet are decidable or more strongly have low computational complexity.〔 The field of descriptive complexity theory aims at establishing a link between logics and computational complexity theory, by identifying logical fragments that exactly capture certain complexity classes.〔.〕 ==References== 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「Fragment (logic)」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.