MULTIPLICATIVE ZAGREB INDICES OF FOUR NEW F-SUMS OF GRAPHS

B. Basavanagoud; Mahammadsadiq Sayyed

doi:10.56827/SEAJMMS.2022.1802.13

B. Basavanagoud Department of Mathematics, Karnatak University, Dharwad - 580003, Karnataka, INDIA
Mahammadsadiq Sayyed Department of Mathematics, Karnatak University, Dharwad - 580003, Karnataka, INDIA

DOI: https://doi.org/10.56827/SEAJMMS.2022.1802.13

Keywords: F-sums of graphs, multiplicative Zagreb indices, graph indices.

Abstract

For molecular graph G, the first multiplicative Zagreb index is defined as the product of squares of degree of all vertices of graph and the second multiplicative Zagreb index is defined as Q 2 (G) = Q u∈V (G) dG(u) dG(u) . In this paper, we obtain first and second multiplicative Zagreb indices of four new F-Sums of graphs.