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图的字典积的非零整数流(英文)
Nowhere-Zero Flows in Lexicographic Product of Graphs
【摘要】 充分利用图的字典积的结构证明了以下结论:如果图G1的每连通分支都非平凡,图G2的阶数大于3,那么它们的字典积G1[G2]具有非零3-流.
【Abstract】 In this paper,we characterize graphs whose lexicographic product admits nowhere-zero 3-flow.The main result is:For a nontrivial connected graph G1 and a connected graph G2 of order at least 3,the lexicographic product G1[G2]admits a nowhere-zero 3-flow.
【基金】 supported by Science and Technology Project of Department of Education of Fujian Provice(Grant nurnber JB08212,JA06061,JA08223)
- 【文献出处】 数学研究 ,Journal of Mathematical Study , 编辑部邮箱 ,2009年01期
- 【分类号】O157.5
- 【下载频次】57