On the first Zagreb index of polygraphs

AuthorsH. Shabani-R. Kahkeshani
JournalElectronic Notes in Discrete Mathematics
Paper TypeFull Paper
Published At2014-01-15
Journal GradeScientific - research
Journal TypeElectronic
Journal CountryNetherlands

Abstract

One of the most popular topological indices is the Zagreb index, introduced by Gutman and Trinajstic in 1972, which is the sum of squares of degree sequence of a (chemical) graph G. In this paper, we obtain an upper bound for the Zagreb index of polygraphs, rotagraphs and fasciagraphs.

 

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