Axial constants and sectional regularity of homogeneous ideals

Axial constants and sectional regularity of homogeneous ideals
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齐次理想的轴向常数和截面正则性

DOI:
10.1090/proc/16244
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发表时间:
2023
影响因子:
1
通讯作者:
Zhang, Sindy
Zhang, Sindy
中科院分区:
数学3区
文献类型:
--
作者:
DeBellevue, Michael;Lebovitz, Audric;Li, Yik;Lotfi, Mohamed;Mohite, Shivam;Pan, Xin;Pathak, Mrigank;Roshan Zamir, Shah;Seceleanu, Alexandra;Zhang, Sindy

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我们引入了齐次理想的截面正则性概念,它测量其一般截面相对于不同维度的线性空间的正则性。它与轴向常数相关,轴向常数定义为单项式指数集在逆字典序通用初始理想的坐标轴上的截距。我们展示了这些概念和其他几个同调和理想理论不变量的等价性。我们还确定,这些等效的不变量对于给定理想的幂族呈线性增长。参考
We introduce a notion of sectional regularity for a homogeneous ideal, which measures the regularity of its general sections with respect to linear spaces of various dimensions. It is related to axial constants defined as the intercepts on the coordinate axes of the set of exponents of monomials in the reverse lexicographic generic initial ideal of. We show the equivalence of these notions and several other homological and ideal-theoretic invariants. We also establish that these equivalent invariants grow linearly for the family of powers of a given ideal. References
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