On the Equality of Symbolic and Ordinary Powers of Binomial Edge Ideals

被引:1
|
作者
Jahani, I. [1 ]
Bayati, Sh. [1 ]
Rahmati, F. [1 ]
机构
[1] Amirkabir Univ Technol, Dept Math & Comp Sci, Tehran Polytech, Tehran, Iran
来源
关键词
Binomial edge ideal; Caterpillar tree; Generalized caterpillar graph; Symbolic power; Weakly closed; GRAPHS;
D O I
10.1007/s00574-022-00323-7
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
In this paper, we investigate whether the symbolic and ordinary powers of a binomial edge ideal J(G )are equal. We show that the equality J(G)(t)= J(G)((t)) holds for every t >= 1 when | Ass(J(G))| = 2. Moreover, if G is a caterpillar tree, then one has the same equality. Finally, we characterize the generalized caterpillar graphs which the equality of symbolic and ordinary powers of J(G) occurs.
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页数:13
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