Linearity of free resolutions of monomial ideals
Linearity of free resolutions of monomial ideals
复制标题
单项式理想自由分辨率的线性
DOI:
10.1007/s40687-022-00330-6
复制
发表时间:
2022
影响因子:
1.2
通讯作者:
Eisenbud, David
中科院分区:
文献类型:
--
作者:
Dao, Hailong;Eisenbud, David
We study monomial ideals with linear presentation or partially linear resolution. We give combinatorial characterizations of linear presentation for square-free ideals of degree 3, and for primary ideals whose resolutions are linear except for the last step (the “almost linear” case). We also give sharp bounds on Castelnuovo–Mumford regularity and numbers of generators in some cases. It is a basic observation that linearity properties are inherited by the restriction of an ideal to a subset of variables, and we study when the converse holds. We construct fractal examples of almost linear primary ideals with relatively few generators related to the Sierpiński triangle. Our results also lead to classes of highly connected simplicial complexesthat cannot be extended to the complete-skeleton of the simplex on the same variables by shelling.
登录
查看更多内容
DOI:
10.4064/-26-2-57-70
发表时间:
1990
期刊:
Banach Center Publications
影响因子:
--
作者:
R. Fröberg
通讯作者:
R. Fröberg
DOI:
--
发表时间:
1984
期刊:
影响因子:
--
作者:
J. Herzog;M. Kühl
通讯作者:
M. Kühl
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
I. Peeva;Mauricio Velasco
通讯作者:
Mauricio Velasco
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
Adam Boocher
通讯作者:
Adam Boocher
影响因子:
0.8
作者:
Hailong Dao;Joseph Doolittle;Justin Lyle
通讯作者:
Justin Lyle