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arXiv 0802.2769math.AC
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单项理想的对偶

Skeletons of monomial ideals

Juergen Herzog, Ali Soleyman Jahan, Xinxian Zheng

摘要:

在类比的骨架的单纯复形和他们的斯坦利-Reisner理想,我们介绍了骨架的任意单项理想$I\subset S=K[x_1,...,x_n]$。这允许我们根据骨架理想计算$S/I$的深度。我们应用这些技术表明,斯坦利的猜测斯坦利分解的$S/I$举行,只要它持有时,$S/I$是科恩-麦考利。我们还讨论了Soleyman-Jahan的一个猜想,并证明了它足以证明他的猜想单项式理想与线性决议。

英文摘要:

In analogy to the skeletons of a simplicial complex and their Stanley--Reisner ideals we introduce the skeletons of an arbitrary monomial ideal $I\subset S=K[x_1,...,x_n]$. This allows us to compute the depth of $S/I$ in terms of its skeleton ideals. We apply these techniques to show that Stanley's conjecture on Stanley decompositions of $S/I$ holds provided it holds whenever $S/I$ is Cohen--Macaulay. We also discuss a conjecture of Soleyman-Jahan and show that it suffices to prove his conjecture for monomial ideals with linear resolution.

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