TY - JOUR
ID - 13643
TI - On leap Zagreb indices of graphs
JO - Communications in Combinatorics and Optimization
JA - CCO
LA - en
SN - 2538-2128
AU - Gutman, Ivan
AU - Naji, Ahmed M
AU - Soner, Nandappa D
AD - University of Kragujevac
AD - Department of Mathematics, University of Mysore, Mysusu, India
AD - Department of Mathematics, University of Mysore, Mysuru, India
Y1 - 2017
PY - 2017
VL - 2
IS - 2
SP - 99
EP - 117
KW - degree (of vertex)
KW - Second degree
KW - Zagreb indices
KW - leap Zagreb indices
DO - 10.22049/cco.2017.25949.1059
N2 - 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.
UR - http://comb-opt.azaruniv.ac.ir/article_13643.html
L1 - http://comb-opt.azaruniv.ac.ir/article_13643_fc88ed6fdf52b7f7a7ad4b621f695992.pdf
ER -