Reformulated First Zagreb Index of Some Graph Operations

Nilanjan De, Sk. Nayeem, Anita Pal
2015 Mathematics  
The reformulated Zagreb indices of a graph are obtained from the classical Zagreb indices by replacing vertex degrees with edge degrees, where the degree of an edge is taken as the sum of degrees of the end vertices of the edge minus 2. In this paper, we study the behavior of the reformulated first Zagreb index and apply our results to different chemically interesting molecular graphs and nano-structures.
doi:10.3390/math3040945 fatcat:aguaonezsrdmzky4j4ymd7ifnm