V2EX matlis duality

Matlis Duality

释义 Definition

Matlis 对偶性(Matlis Duality)是交换代数中的一个重要对偶理论:在诺特局部环 \((R,\mathfrak m)\) 上,利用其注入包(通常取剩余域 \(k=R/\mathfrak m\) 的注入包 \(E=E_R(k)\))定义函子
\[ D(-)=\mathrm{Hom}_R(-,E), \] 从而在某些模的类别中建立一种“对偶对应”。典型结论是:在适当条件下,有限生成模Artinian 模之间通过 \(D\) 形成对偶关系,并且常见地有自然同构 \(M \cong D(D(M))\)(在相应类别中)。

发音 Pronunciation (IPA)

/mtlis dulti/

词源 Etymology

“Matlis”来自美国数学家 Eben Matlis 的姓氏;他在 1950s1960s 的工作中系统建立了局部环上注入模的结构理论,并由此发展出这种以注入包为核心的对偶工具。“duality”源自拉丁语 dualis(“二、双”),在数学中指将对象与其“对偶对象”对应起来的思想。

例句 Examples

Matlis duality relates finitely generated modules to Artinian modules over a Noetherian local ring.
Matlis 对偶性把诺特局部环上的有限生成模与 Artinian 模联系起来。

Using Matlis duality, one can translate questions about local cohomology into statements about Hom-modules into an injective hull.
借助 Matlis 对偶性,可以把关于局部上同调的问题转化为关于到某个注入包的 Hom-模的陈述。

相关词 Related Words

文学作品与著作 Literary Works

  • Eben Matlis, Injective Modules over Noetherian Rings(经典论文,奠定 Matlis 对偶相关理论框架)
  • Hideyuki Matsumura, Commutative Ring Theory(交换环论教材中常讨论 Matlis 对偶及其应用)
  • Winfried Bruns & Jürgen Herzog, CohenMacaulay Rings(在 CohenMacaulay 理论、局部上同调与对偶性部分使用/提及 Matlis 对偶)
  • David Eisenbud, Commutative Algebra with a View Toward Algebraic Geometry(教材中在局部理论与对偶工具处涉及相关思想)
  • M. P. Brodmann & R. Y. Sharp, Local Cohomology: An Algebraic Introduction with Geometric Applications(系统使用 Matlis 对偶处理局部上同调)
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