Xiaoyan Yang

collaborators

2 papers

math.AC2022

Cofiniteness of generalized local cohomology modules for ideals of small dimension

Xiaoyan Yang, Jiaojiao Lu

Let $a$ be an ideal of a commutative noetherian ring $R$ and $M, N$ two finitely generated $R$ -modules. By using a spectral sequence argument, it is shown that if either…

math.AC2022

Hartshorne's question on cofinite complexes

Xiaoyan Yang, Jingwen Shen

Let $a$ be a proper ideal of a commutative noetherian ring $R$ and $d$ a positive integer. We answer Hartshorne's question on cofinite complexes completely in the cases…