某些覆盖理想的正则性、Rees代数与Betti数
交换代数
2021-02-10 v3
摘要
设为多项式环,其中为一个域。本文研究由次平方自由单项理想生成的Rees代数的定义理想。作为推论,我们证明了树的补图的覆盖理想之幂的Betti数与树的选择无关。进一步,我们研究了与某些图相关的覆盖理想之幂的正则性与Betti数。
引用
@article{arxiv.1906.00652,
title = {Regularity, Rees algebra and Betti numbers of certain cover ideals},
author = {Ajay Kumar and Rajiv Kumar},
journal= {arXiv preprint arXiv:1906.00652},
year = {2021}
}
备注
Title has been changed and some new result has been added. To be appear in Archiv Der Mathematik