2008University of Zagreb University Computing Centre (SRCE)Open access

The Edge Szeged Index of Product Graphs

M. H. Khalifeh, H. Yousefi-Azari, Али Реза Ашрафи, İvan Gutman

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Abstract

The edge Szeged index of a molecular graph G is defined as the sum of products m u (e|G)m v (e|G) over all edges e = uv of G, where m u (e|G) is the number of edges whose distance to vertex u is smaller than the distance to vertex v, and where m v (e|G) is defined analogously.The aim of this paper is to compute the edge Szeged index of the Cartesian product of graphs.As a consequence of our result, the edge Szeged index of Hamming graphs and C 4 -nanotubes are computed.

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The edge Szeged index of a molecular graph G is defined as the sum of products m u (e|G)m v (e|G) over all edges e = uv of G, where m u (e|G) is the number of edges whose distance to vertex u is smaller than the distance to vertex v, and where m v (e|G) is defined analogously.The aim of this paper is to compute the edge Szeged index of the Cartesian product of graphs.As a consequence of our result, the edge Szeged index of Hamming graphs and C 4 -nanotubes are computed.

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Available abstract

The edge Szeged index of a molecular graph G is defined as the sum of products m u (e|G)m v (e|G) over all edges e = uv of G, where m u (e|G) is the number of edges whose distance to vertex u is smaller than the distance to vertex v, and where m v (e|G) is defined analogously.The aim of this paper is to compute the edge Szeged index of the Cartesian product of graphs.As a consequence of our result, the edge Szeged index of Hamming graphs and C 4 -nanotubes are computed.

Key concepts: Cartesian product, Combinatorics, Vertex (graph theory), Mathematics, Enhanced Data Rates for GSM Evolution, Index (typography), Graph, Product (mathematics)

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