对单项式理想中嵌入关联素数的文章的更正

IF 0.7 4区 数学 Q2 MATHEMATICS
Mirsadegh Sayedsadeghi, Mehrdad Nasernejad, Ayesha Asloob Qureshi
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引用次数: 0

摘要

设I∧R=K[x1,…,xn]是单项式理想,=(x1,…,xn), t是正整数,y1,…,ys是R中的不同变量,使得对于每一个I =1,…,s, yi∈Ass(R∕(I∈yi)t),其中I∈yi表示I在yi处的缺失。本文的定理3.4表明,当且仅当∈Ass(R∕(It:∏i=1syi))时,∈Ass(R∕(It:∏i=1syi))。作为定理3.4的一个应用,在定理3.6中论证了在一定条件下,每一个未混合König理想通常是无扭的。此外,定理3.7指出,在某些条件下,无平方单项理想通常是无扭转的。事实证明,这些条件不足以得到定理3.6和3.7中所期望的表述。我们更新这些条件来验证定理3.6和3.7的结论。为此,我们只要将表达式“xi∈Ass(R∕(I∈xi)t)”替换为“I∈xi通常是无扭的”就足够了。应当指出,前面的证明仍然是正确的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
CORRECTION TO THE ARTICLE ON THE EMBEDDED ASSOCIATED PRIMES OF MONOMIAL IDEALS
Let I⊂R=K[x1,…,xn] be a monomial ideal, 𝔪=(x1,…,xn), t a positive integer, and y1,…,ys be distinct variables in R such that, for each i=1,…,s, 𝔪∖yi∉Ass(R∕(I∖yi)t), where I∖yi denotes the deletion of I at yi. It is shown in Theorem 3.4 of the article in question that 𝔪∈Ass(R∕It) if and only if 𝔪∈Ass(R∕(It:∏i=1syi)). As an application of Theorem 3.4, it is argued in Theorem 3.6 that under certain conditions, every unmixed König ideal is normally torsion-free. In addition, Theorem 3.7 states that under certain conditions a square-free monomial ideal is normally torsion-free. It turns out that these conditions are not enough to obtain the desired statements in Theorems 3.6 and 3.7. We update these conditions to validate the conclusions of Theorems 3.6 and 3.7. For this purpose, it is enough for us to replace the expression “𝔪∖xi∉Ass(R∕(I∖xi)t)” with the new expression “I∖xi is normally torsion-free”. It should be noted that the previous proofs are still correct.
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来源期刊
CiteScore
1.20
自引率
12.50%
发文量
71
审稿时长
7.5 months
期刊介绍: Rocky Mountain Journal of Mathematics publishes both research and expository articles in mathematics, and particularly invites well-written survey articles. The Rocky Mountain Journal of Mathematics endeavors to publish significant research papers and substantial expository/survey papers in a broad range of theoretical and applied areas of mathematics. For this reason the editorial board is broadly based and submissions are accepted in most areas of mathematics. In addition, the journal publishes specialized conference proceedings.
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