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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 Du Bois singularities ： ウィキペディア英語版 Du Bois singularity In algebraic geometry, Du Bois singularities are singularities of complex varieties studied by . gave the following characterisation of Du Bois singularities. Suppose that $X$ is a reduced closed subscheme of a smooth scheme $Y$. Take a log resolution $\backslash pi:\; Z\; \backslash to\; X$ of $X$ in $Y$ that is an isomorphism outside $X$, and let $E$ be the reduced preimage of $X$ in $Z$. Then $X$ has Du Bois singularities if and only if the induced map $\backslash mathcal\_X\; \backslash to\; R\backslash pi\_\backslash mathcal\_E$ is a quasi-isomorphism. ==References== * * 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「Du Bois singularity」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.