On the scramble number of graphs
On the scramble number of graphs
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关于图的置乱数
DOI:
10.1016/j.dam.2021.12.009
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发表时间:
2022
影响因子:
1.1
通讯作者:
Weber, Ben
中科院分区:
文献类型:
--
作者:
Echavarria, Marino;Everett, Max;Huang, Robin;Jacoby, Liza;Morrison, Ralph;Weber, Ben
The scramble number of a graph is an invariant recently developed to aid in the study of divisorial gonality. In this paper we prove that scramble number is NP-hard to compute, also providing a proof that computing gonality is NP-hard even for simple graphs, as well as for metric graphs. We also provide general lower bounds for the scramble number of a Cartesian product of graphs, and apply these to compute gonality for many new families of product graphs.
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影响因子:
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