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基于圈和三个孤立点的冠图的Q-谱确定性

Q-Spectral Characterization of the Corona of A Cycle and Three Isolated Vertices
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摘要 设G是n阶图,H是m阶图,取n个H的拷贝,并将G的第i个点和第i个H中的每一点相连(i=1,2,…,n),所得到的(n+mn)阶图称为冠图,记为GH.对基于圈和3个孤立点的冠图的Q-谱确定性(无符号拉普拉斯谱确定性),即Cn3 K1的Q-谱确定性进行了研究,证明了当n≠32,64,128时,Cn3 K1由其Q-谱确定. Let G be a graph with n vertices, and If be a graph with m vertices. The corona G.H is the graph with n + mn vertices obtained from G and n copies of H by joining the i-th vertex of G to each vertex in the i-th copy of = 1,2, ……, n ). The g-spectral characterization of the corona Cn °3K 1 was studied, where Cn °3K1 was the corona of a cycle and three isolated vertices. It is proved that Cn °3K 1 is determined by its signless Laplacian spectrum when n 7^32,64,128.
出处 《上海理工大学学报》 CAS 北大核心 2016年第4期307-312,317,共7页 Journal of University of Shanghai For Science and Technology
基金 国家自然科学基金资助项目(11301340 11201303) 上海市自然科学基金资助项目(12ZR1420300) 沪江基金资助项目(B14005)
关键词 无符号拉普拉斯谱 Q-谱 冠图 单圈图 signless Laplacian spectrum Q-spectrum corona unicyclic graph
作者简介 康同芳(1990-),女,硕士研究生.研究方向:代数图论.E-mail:1441005190@qq.com 通信作者:吴宝丰(1978-),男,讲师.研究方向:代数图论.E-mail:baufern@usst.edu.cn
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