翻訳と辞書 Words near each other ・ Intersection (aeronautics) ・ Intersection (album) ・ Intersection (disambiguation) ・ Intersection (Euclidean geometry) ・ Intersection (novel) ・ Intersection (road) ・ Intersection (sculpture) ・ Intersection (set theory) ・ Intersection algorithm ・ Intersection assistant ・ Intersection capacity utilization ・ Intersection curve ・ Intersection for the Arts ・ Intersection for the Arts Literary Series ・ Intersection form ・ Intersection form (4-manifold) ・ Intersection graph ・ Intersection homology ・ Intersection Mountain ・ Intersection number ・ Intersection number (graph theory) ・ Intersection of a polyhedron with a line ・ Intersection syndrome ・ Intersection theorem ・ Intersection theory ・ Intersection theory (disambiguation) ・ Intersectionality ・ Intersections (1985–2005) ・ Intersections (arts festival) ・ Intersections (Dave House album) 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 Intersection form (4-manifold) ： ウィキペディア英語版 Intersection form (4-manifold) In mathematics, the intersection form of an oriented compact 4-manifold is a special symmetric bilinear form on the 2nd cohomology group of the 4-manifold. It reflects much of the topology of the 4-manifolds, including information on the existence of a smooth structure. ==Definition== The intersection form :$Q\_M\backslash colon\; H^2(M;\backslash mathbb)\backslash times\; H^2(M;\backslash mathbb)\backslash to\; \backslash mathbb$ is given by :$Q\_M(a,b)=\backslash langle\; a\backslash smile\; b,()\backslash rangle.$ When the 4-manifold is also smooth, then in de Rham cohomology, if ''a'' and ''b'' are represented by 2-forms α and β, then the intersection form can be expressed by the integral :$Q(a,b)=\; \backslash int\_M\; \backslash alpha\; \backslash wedge\; \backslash beta$ where $\backslash wedge$ is the wedge product, see exterior algebra. 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「Intersection form (4-manifold)」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.