Title of article :
On leap Zagreb indices of graphs
Author/Authors :
Naji ، A.M. Department of Studies in Mathematics - University of Mysore , Soner ، N.D. Department of Studies in Mathematics - University of Mysore , Gutman ، Ivan Faculty of Science - University of Kragujevac
Abstract :
The first and second Zagreb indices of a graph are equal, respectively, to the sum of squares of the vertex degrees, and the sum of the products of the degrees of pairs of adjacent vertices. We now consider analogous graph invariants, based on the second degrees of vertices (number of their second neighbors), called leap Zagreb indices. A number of their basic properties is established.
Keywords :
degree (of vertex) , Second degree , Zagreb indices , leap Zagreb indices
Journal title :
Communications in Combinatorics and Optimization
Journal title :
Communications in Combinatorics and Optimization
