Free resolutions and Lefschetz properties of some Artin Gorenstein rings of codimension four
Free resolutions and Lefschetz properties of some Artin Gorenstein rings of codimension four
复制标题
余维四的一些 Artin Gorenstein 环的自由分辨率和 Lefschetz 性质
DOI:
10.1016/j.jsc.2023.102257
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发表时间:
2024
影响因子:
0.7
通讯作者:
Schenck, Hal
中科院分区:
文献类型:
--
作者:
Abdallah, Nancy;Schenck, Hal
Abstract In (Stanley, 1978), Stanley constructs an example of an Artinian Gorenstein (AG) ring A with non-unimodal H-vector (1, 13, 12, 13, 1). Migliore-Zanello show in (Migliore and Zanello, 2017) that for regularity r= 4, Stanley's example has the smallest possible codimension c for an AG ring with non-unimodal H-vector. The weak Lefschetz property (WLP) has been much studied for AG rings; it is easy to show that an AG ring with non-unimodal H-vector fails to have WLP. In codimension c= 3 it is conjectured that all AG rings have WLP. For c= 4, Gondim shows in (Gondim, 2017) that WLP always holds for r≤ 4 and gives a family where WLP fails for any r≥ 7, building on Ikeda's example (Ikeda, 1996) of failure for r= 5. In this note we study the minimal free resolution of A and relation to Lefschetz properties (both weak and strong) and Jordan type for c= 4 and r≤ 6.
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影响因子:
1.5
作者:
H. Schenck;M. Stillman;Beihui Yuan
通讯作者:
Beihui Yuan
DOI:
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发表时间:
1996
期刊:
影响因子:
--
作者:
H. Ikeda
通讯作者:
H. Ikeda
DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
D. Cook;U. Nagel
通讯作者:
U. Nagel
影响因子:
0.9
作者:
Nancy Abdallah;Nasrin Altafi;A. Iarrobino;A. Seceleanu;Joachim Yam'eogo
通讯作者:
Nancy Abdallah;Nasrin Altafi;A. Iarrobino;A. Seceleanu;Joachim Yam'eogo
DOI:
--
发表时间:
2021
期刊:
--
影响因子:
--
作者:
Kapustka G
通讯作者:
Kapustka G