翻訳と辞書 Words near each other ・ Link analysis ・ Link Anchor Man ・ Link awareness ・ Link BC ・ Link Belt ・ Link Belt (SEPTA station) ・ Link bidding ・ Link budget ・ Link building ・ Link Byfield ・ Link cable ・ Link Campus University ・ Link Capacity Adjustment Scheme ・ Link Centre ・ Link Community Development ・ Link concordance ・ Link contract ・ Link control ・ Link Control Protocol ・ Link Crew ・ Link Electronics Ltd ・ Link encryption ・ Link Ethiopia ・ Link exchange ・ Link farm ・ Link FM ・ Link Gaetz ・ Link grammar ・ Link group ・ Link Island 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 Link concordance ： ウィキペディア英語版 Link concordance In mathematics two links $L\_0\; \backslash subset\; S^n$ and $L\_1\; \backslash subset\; S^n$ are concordant if there is an embedding $f\; :\; L\_0\; \backslash times\; ()\; \backslash to\; S^n\; \backslash times\; ()$ such that $f(L\_0\; \backslash times\; \backslash )\; =\; L\_0\; \backslash times\; \backslash$ and $f(L\_0\; \backslash times\; \backslash )\; =\; L\_1\; \backslash times\; \backslash$. By its nature, link concordance is an equivalence relation. It is weaker than isotopy, and stronger than homotopy: isotopy implies concordance implies homotopy. A link is a slice link if it is concordant to the unlink. == Concordance invariants == A function of a link that is invariant under concordance is called a concordance invariants. The linking number of any two components of a link is one of the most elementary concordance invariants. The signature of a knot is also a concordance invariant. A subtler concordance invariant are the Milnor invariants, and in fact all rational finite type concordance invariants are Milnor invariants and their products, though non-finite type concordance invariants exist. 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「Link concordance」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.