Leap Zagreb ‎I‎ndices of Some Graph Operations‎

Subject Areas : International Journal of Industrial Mathematics

نسرین دهگردی ¹ (Department of Mathematics and Computer Science, Sirjan University of Technology Sirjan, Iran.)
رعنا خوئیلر ² (Department of Mathematics, Azarbaijan Shahid Madani University, Tabriz, Iran.)
مرضیه سرودی ³ (Department of Mathematics Azarbaijan Shahid Madani University Tabriz, Iran)

Received: 2018-04-25 Accepted : 2019-04-14 Published : 2021-07-01

Keywords: Zagreb indices, Consumers.‎‎, Supply ‎chains, Leap Zagreb indices, Graph ‎operations‎,

Abstract :

The fiirst leap Zagreb index of a graph, is the sum of squares of the second degrees of vertices (number of their second neighbors), and the second leap Zagreb index is the sum of the products of the second degrees of pairs of adjacent vertices, and the third leap Zagreb index is the sum of the product of the degree and second degree of the vertices.

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