4 papers
math.AC2022
The edge ideals of the join of some vertex weighted oriented graphs
Yijun Cui, Guangjun Zhu, Xiaoqi Wei
In this paper, we describe primary decomposition of the edge ideal of the join of some graphs in terms of that information of the edge ideal of every weighted oriented graph. Meanw…
math.AC2021
The facet ideals of matching complexes of line graphs
Guangjun Zhu, Hong Wang, Yijun Cui
Let be a line graph with edges and $\F(L_n)$ the facet ideal of its matching complex. In this paper, we provide the irreducible decomposition of $\F(L_n)$ and some exact…
math.AC2021
Freiman -spread principal Borel ideals
Guangjun Zhu, Yakun Zhao, Yijun Cui
An equigenerated monomial ideal is a Freiman ideal if where is the analytic spread of and is the least number of mo…
math.AC2021
Freiman cover ideals of unmixed bipartite graphs
Guangjun Zhu, Yakun Zhao, Yijun Cui
An equigenerated monomial ideal in the polynomial ring is a Freiman ideal if where is the analytic spre…