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《Journal of Baoji University of Arts and Sciences(Natural Science Edition)》 2009-01
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The expansion graph and the properties of its spectrum

A Yong-ga,SI Qin(College of Mathematic Science,Inner Mongolia Normal University,Huhhot 010022,Inner Monglia,China)  
Aim The properties of the expansion graph were investigated.Methods The construction of graphs was analyzed with the algebraic analytical method.Results Using the construction of the line graph of the subdivision graph,expansion graph,a new generalized line graph,was given.Conclusion Some properties of the expansion graph was discussed,the parameters of graph and its expansion graph were given,hence properties of the spectrum of the expansion graph were determined.
【Fund】: 内蒙古自然科学基金(20050801)
【CateGory Index】: O157.5
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