翻訳と辞書 Words near each other ・ Double Sextet/2×5 ・ Double Shah ・ Double shift school ・ Double Shoals Cotton Mill ・ Double Shot ・ Double Shot (Of My Baby's Love) ・ Double Shot (ride) ・ Double Shot! ・ Double sidedness ・ Double Silhouette ・ Double Sin and Other Stories ・ Double Six ・ Double L Excentric Gyratory ・ Double L Site, RI-958 ・ Double Lake ・ Double lattice ・ Double layer ・ Double layer (biospecific) ・ Double layer (interfacial) ・ Double layer (plasma) ・ Double layer forces ・ Double layer potential ・ Double Leaf Society ・ Double Leg ・ Double Leg (trick) ・ Double Life ・ Double Life (album) ・ Double Life (PlayStation ad) ・ Double Life (song) ・ Double lift 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 Double lattice ： ウィキペディア英語版 Double lattice In mathematics, especially in geometry, a double lattice in is a discrete subgroup of the group of Euclidean motions that consists only of translations and point reflections and such that the subgroup of translations is a lattice. The orbit of any point under the action of a double lattice is a union of two Bravais lattices, related to each other by a point reflection. A double lattice in two dimensions is a p2 wallpaper group. In three dimensions, a double lattice is a space group of the type , as denoted by international notation. == Double lattice packing == A packing that can be described as the orbit of a body under the action of a double lattice is called a double lattice packing. In many cases the highest known packing density for a body is achieved by a double lattice. Examples include the regular pentagon, heptagon, and nonagon and the equilateral triangular bipyramid. Włodzimierz Kuperberg and Greg Kuperberg showed that all convex planar bodies can pack at a density of at least by use a double lattice.〔 〕 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「Double lattice」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.