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Ideals of Reduction Number Two
Israel Journal of Mathematics ( IF 0.8 ) Pub Date : 2021-05-07 , DOI: 10.1007/s11856-021-2142-0
Shinya Kumashiro

In a local Cohen-Macaulay ring (A, m), we study the Hilbert function of an m-primary ideal I whose reduction number is two. It is a continuous work of the papers of Huneke, Ooishi, Sally, and Goto-Nishida-Ozeki. With some conditions, we show the inequality e1(I) ≥ e0(I) − A(A/I) + e2(I) of the Hilbert coefficients, which is the converse inequality of Sally and Itoh. We also study relations between the Hilbert coefficients and the depth of the associated graded ring.



中文翻译:

减少第二个理想

在局部Cohen-Macaulay环(A,m)中,我们研究了约数为2的m初等理想I的希尔伯特函数。这是Huneke,Ooishi,Sally和Goto-Nishida-Ozeki论文的连续著作。对于某些条件下,我们示出了不等式ë 1)≥È 0) - A / I)+ E 2)的希尔伯特系数,其是Sally和伊藤的逆不等式的。我们还研究了希尔伯特系数与相关渐变环的深度之间的关系。

更新日期:2021-05-07
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