Regularity of Cohen-Macaulay Specht ideals
Regularity of Cohen-Macaulay Specht ideals
复制标题
科恩-麦考利·斯佩希特理想的正则性
DOI:
10.1016/j.jalgebra.2021.04.022
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发表时间:
2021
影响因子:
0.9
通讯作者:
Yanagawa Kohji
中科院分区:
文献类型:
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作者:
Shibata Kosuke;Yanagawa Kohji
For a partition λ of n∈ N, let I λ Sp be the ideal of R= K [x 1,…, x n] generated by all Specht polynomials of shape λ. In the previous paper, the second author showed that if R/I λ Sp is Cohen-Macaulay, then λ is either (n− d, 1,…, 1),(n− d, d), or (d, d, 1), and the converse is true if char (K)= 0. In this paper, we compute the Hilbert series of R/I λ Sp for λ=(n− d, d) or (d, d, 1). Hence, we get the Castelnuovo-Mumford regularity of R/I λ Sp, when it is Cohen-Macaulay. In particular, I (d, d, 1) Sp has a (d+ 2)-linear resolution in the Cohen–Macaulay case.
DOI:
10.1090/s0002-9939-1992-1089412-9
发表时间:
1992
期刊:
--
影响因子:
--
作者:
C. Rentería;R. Villarreal
通讯作者:
R. Villarreal
DOI:
--
发表时间:
2006
期刊:
Integrable systems, geometry, and topology, AMS/IP Studies of Advanced Mathematics, American Mathematical Society 36
影响因子:
--
作者:
FURUYA;Jun;Martin Guest
通讯作者:
Martin Guest