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arXiv math/0503526math.AC
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相对压缩水平代数的$h$ -向量

The $h$-vector of a relatively compressed level algebra

Fabrizio Zanello

摘要:

本文的目的是提供一个关于任意水平代数$A$相对压缩的水平代数的$h$ -向量的上、下界(通常是精确的)。Migliore { \it et al.}在$[MMN]$中引入了相对压缩代数的概念。(其调查主要集中在$A$的特殊情况下,一个完整的交叉口)。本文的主要思想是简单地观察到相对于$A$压缩的水平代数与$A$适当截断的一般水平代数一致(在一个明显的同构之后)。因此,我们能够适用于相对压缩代数的主要结果,我们最近的工作$[Za3]$。

英文摘要:

The purpose of this note is to supply an upper and a lower bound (which are in general sharp) for the $h$-vector of a level algebra which is relatively compressed with respect to any arbitrary level algebra $A$. The useful concept of relatively compressed algebra was recently introduced in $[MMN]$ by Migliore {\it et al.} (whose investigations mainly focused on the particular case of $A$ a complete intersection). The key idea of this note is the simple observation that the level algebras which are relatively compressed with respect to $A$ coincide (after an obvious isomorphism) with the generic level quotients of suitable truncations of $A$. Therefore, we are able to apply to relatively compressed algebras the main result of our recent work $[Za3]$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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