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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Conjunction introduction ： ウィキペディア英語版 Conjunction introduction Conjunction introduction (often abbreviated simply as conjunction and also called and introduction〔Copi and Cohen〕〔Moore and Parker〕) is a valid rule of inference of propositional logic. The rule makes it possible to introduce a conjunction into a logical proof. It is the inference that if the proposition ''p'' is true, and proposition ''q'' is true, then the logical conjunction of the two propositions ''p and q'' is true. For example, if it's true that it's raining, and it's true that I'm inside, then it's true that "it's raining and I'm inside". The rule can be stated: :$\backslash frac$ where the rule is that wherever an instance of "$P$" and "$Q$" appear on lines of a proof, a "$P\; \backslash and\; Q$" can be placed on a subsequent line. == Formal notation == The ''conjunction introduction'' rule may be written in sequent notation: : $P,\; Q\; \backslash vdash\; P\; \backslash and\; Q$ where $\backslash vdash$ is a metalogical symbol meaning that $P\; \backslash and\; Q$ is a syntactic consequence if $P$ and $Q$ are each on lines of a proof in some logical system; where $P$ and $Q$ are propositions expressed in some formal system. 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「Conjunction introduction」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.