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Multiplicative Zagreb eccentricity indices of some composite graphs
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نویسنده
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لو ژویانگ ,وو جیانلیانگ
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منبع
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transactions on combinatorics - 2014 - دوره : 3 - شماره : 2 - صفحه:21 -29
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چکیده
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Let g be a connected graph. the multiplicative zagreb eccentricity indices of g aredened respectively as 1 (g) = qv2v (g) 2g(v) and 2 (g) = quv2e(g) g(u)g(v), where g(v) isthe eccentricity of vertex v in graph g and 2g(v) = (g(v))2. in this paper, we present some bounds ofthe multiplicative zagreb eccentricity indices of cartesian product graphs by means of some invariantsof the factors and supply some exact expressions of 1 and 2 indices of some composite graphs, suchas the join, disjunction, symmetric di erence and composition of graphs, respectively.
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کلیدواژه
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Multiplicative Zagreb eccentricity indices ,composite operations ,Cartesian product
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آدرس
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Changji University, Department of Mathematics, Changji University, Changji 831100, China, China, Shandong University, School of Mathematics, Shandong University, Jinan 250100, China, China
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پست الکترونیکی
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jlwu@sdu.edu.cn
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Authors
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