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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 Kripke–Joyal semantics ： ウィキペディア英語版 Kripke semantics Kripke semantics (also known as relational semantics or frame semantics, and often confused with possible world semantics) is a formal semantics for non-classical logic systems created in the late 1950s and early 1960s by Saul Kripke and André Joyal. It was first conceived for modal logics, and later adapted to intuitionistic logic and other non-classical systems. The discovery of Kripke semantics was a breakthrough in the theory of non-classical logics, because the model theory of such logics was almost non-existent before Kripke (algebraic semantics existed, but were considered 'syntax in disguise'). ==Semantics of modal logic== (詳細はcountably infinite set of propositional variables, a set of truth-functional connectives (in this article $\backslash to$ and $\backslash neg$), and the modal operator $\backslash Box$ ("necessarily"). The modal operator $\backslash Diamond$ ("possibly") is (classically) the dual of $\backslash Box$ and may be defined in terms of necessity like so: $\backslash Diamond\; A\; :=\; \backslash neg\backslash Box\backslash neg\; A$ ("possibly A" is defined as equivalent to "not necessarily not A"). 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「Kripke semantics」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.