Conic divisorial ideals and non-commutative crepant resolutions of edge rings of complete multipartite graphs
Conic divisorial ideals and non-commutative crepant resolutions of edge rings of complete multipartite graphs
复制标题
完全多分图边环的二次曲线除理想与非交换绉解
DOI:
10.1016/j.jalgebra.2021.12.003
复制
发表时间:
2022
影响因子:
0.9
通讯作者:
Matsushita Koji
中科院分区:
文献类型:
--
作者:
Higashitani Akihiro;Matsushita Koji
The first goal of the present paper is to study the class groups of the edge rings of complete multipartite graphs, denoted by k [K r 1,…, r n], where 1≤ r 1≤⋯≤ r n. More concretely, we prove that the class group of k [K r 1,…, r n] is isomorphic to Z n if n= 3 with r 1≥ 2 or n≥ 4, while it turns out that the excluded cases can be deduced into Hibi rings. The second goal is to investigate the special class of divisorial ideals of k [K r 1,…, r n], called conic divisorial ideals. We describe conic divisorial ideals for certain K r 1,…, r n including all cases where k [K r 1,…, r n] is Gorenstein. Finally, we give a non-commutative crepant resolution (NCCR) of k [K r 1,…, r n] in the case where it is Gorenstein.
登录
查看更多内容
DOI:
--
发表时间:
1998
期刊:
影响因子:
--
作者:
A. Simis;W. Vasconcelos;R. Villarreal
通讯作者:
R. Villarreal
DOI:
10.1142/9789812834553_0003
发表时间:
2004
期刊:
--
影响因子:
--
作者:
N. G. Martínez;H. Priestley
通讯作者:
N. G. Martínez;H. Priestley
DOI:
--
发表时间:
2017
期刊:
影响因子:
--
作者:
Yusuke Nakajima
通讯作者:
Yusuke Nakajima
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
M. Inaba;K.Iwasaki and M.Saito;Y.Tsuchimoto;M.Inaba;M.Inaba;上原北斗;島田伊知朗;Akira Ishii;Akira Ishii
通讯作者:
Akira Ishii
影响因子:
0.9
作者:
M. Hashimoto;T. Hibi;A. Noma
通讯作者:
A. Noma