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The Hyper-Zagreb Index of Graph Operations
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نویسنده
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SHIRDEL G. H. ,REZAPOUR H. ,SAYADI A. M.
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منبع
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iranian journal of mathematical chemistry - 2013 - دوره : 4 - شماره : 2 - صفحه:213 -220
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چکیده
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Let g be a simple connected graph. the first and second zagreb indices have been introducedas ? ?v?v(g)(v)2 m1(g) degg and m2(g) ? ?uv?e(g)degg(u)degg(v) , respectively,where degg v(degg u) is the degree of vertex v (u) . in this paper, we define a newdistance-based named hyper?zagreb as e uv e(g) .(v))2 hm(g) ? ? ? ? (degg(u) ? degg inthis paper, the hyper?zagreb index of the cartesian product, composition, join anddisjunction of graphs are computed.
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کلیدواژه
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Hyper-Zagreb index ,Zagreb index ,graph operation.
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آدرس
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university of qom, ایران, university of qom, ایران, university of tehran, ایران
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Authors
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