翻訳と辞書 Words near each other ・ Halfin ・ Halfing ・ Halflife (Doctor Who) ・ Halflife (EP) ・ Halfling ・ Halfling (Dungeons & Dragons) ・ Half-forward line ・ Half-frame camera ・ Half-giant ・ Half-giant (Dungeons & Dragons) ・ Half-graben ・ Half-halt ・ Half-handed Cloud ・ Half-hanging ・ Half-inch tape ・ Half-integer ・ Half-keyboard ・ Half-life ・ Half-life (disambiguation) ・ Half-Life (film) ・ Half-Life (novel) ・ Half-Life (series) ・ Half-Life (video game) ・ Half-Life 2 ・ Half-Life E.P. ・ Half-life of knowledge ・ Half-logistic distribution ・ Half-Man (fairy tale) ・ Half-mast ・ Half-maximal concentration 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 Half-integer ： ウィキペディア英語版 Half-integer In mathematics, a half-integer is a number of the form :$n\; +$, where $n$ is an integer. For example, :4½, 7/2, −13/2, 8.5 are all half-integers. Half-integers occur frequently enough in mathematical contexts that a special term for them is convenient. Note that a half of an integer is not always a half-integer: half of an even integer is an integer but not a half-integer. The half-integers are precisely those numbers that are half of an odd integer, and for this reason are also called the half-odd-integers. Half-integers are a special case of the dyadic rationals, numbers that can be formed by dividing an integer by a power of two.〔.〕 ==Notation and algebraic structure== The set of all half-integers is often denoted :$\backslash mathbb\; Z\; +\; .$ The integers and half-integers together form a group under the addition operation, which may be denoted〔.〕 :$\backslash frac\; \backslash mathbb\; Z$. However, these numbers do not form a ring because the product of two half-integers is generally not itself a half-integer.〔.〕 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「Half-integer」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.