Computing rational powers of monomial ideals

Computing rational powers of monomial ideals
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计算单项式理想的有理幂

DOI:
10.1016/j.jsc.2022.08.018
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发表时间:
2023
影响因子:
0.7
通讯作者:
Tang, Tingting
Tang, Tingting
中科院分区:
数学2区
文献类型:
--
作者:
Dongre, Pratik;Drabkin, Benjamin;Lim, Josiah;Partida, Ethan;Roy, Ethan;Ruff, Dylan;Seceleanu, Alexandra;Tang, Tingting

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本文涉及单项式理想的分数幂。单项式理想的有理幂推广了积分闭包运算并恢复了符号幂族。他们还强调了与凸多面体理论的许多有趣的联系。我们提供多种算法来计算单项式理想的有理幂。我们还引入了一种温和的概括,允许单项式理想的实幂。一个重要的结果是,给定任何单项式理想 I,将实数取 I 相应实次方的函数是一个连续且具有有理间断点的阶跃函数。
This paper concerns fractional powers of monomial ideals. Rational powers of a monomial ideal generalize the integral closure operation as well as recover the family of symbolic powers. They also highlight many interesting connections to the theory of convex polytopes. We provide multiple algorithms for computing the rational powers of a monomial ideal. We also introduce a mild generalization allowing real powers of monomial ideals. An important result is that given any monomial idealI, the function taking a real number to the corresponding real power ofIis a step function which is left continuous and has rational discontinuity points.
DOI: --
发表时间: 2007
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DOI: --
发表时间: 2012
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