Regularity bounds for twisted commutative algebras

Regularity bounds for twisted commutative algebras
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DOI:
10.1112/blms.12326
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发表时间:
2017-04
影响因子:
0.9
通讯作者:
Steven V. Sam;A. Snowden
Steven V. Sam;A. Snowden
中科院分区:
数学3区
文献类型:
--
作者:
Steven V. Sam;A. Snowden

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设A是由d个1次不定元自由生成的扭交换代数.我们证明了一个A-模的正则性可以从它的最小自由分解的前<$14d2 <$+2项有界。这部分地推广了Church和Ellenberg在d=1情形下的结果。
Let A be the twisted commutative algebra freely generated by d indeterminates of degree 1. We show that the regularity of an A ‐module can be bounded from the first ⌊14d2⌋+2 terms of its minimal free resolution. This partially extends results of Church and Ellenberg from the d=1 case.