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on the harmonic index of graph operations
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نویسنده
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SHWETHA SHETTY B. ,LOKESHA V. ,RANJINI P. S.
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منبع
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transactions on combinatorics - 2015 - دوره : 4 - شماره : 4 - صفحه:5 -14
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چکیده
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The harmonic index of a connected graph g, denoted by h(g), is defined as h(g) =∑ uv∈e(g) 2/du +dv where dv is the degree of a vertex v in g. in this paper, expressions for the harary indices of the join, corona product, cartesian product, composition and symmetric difference of graphs are derived.
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کلیدواژه
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harmonic index ,graph operations ,topological indices ,graphs
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آدرس
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Don Bosco Institute of Technology, India, Vijayanagara Sri Krishnadevaraya University, Department of Mathematics, India, Don Bosco Institute of Technology, Department of Mathematics, India
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پست الکترونیکی
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lokiv@yahoo.com
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Authors
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