On leap eccentric connectivity index of thorny graphs
On leap eccentric connectivity index of thorny graphs

Raad Sehen Haoer; Mohanad Ali Mohammed; Natarajan Chidambaram

Volume 2, Issue 10 , October 2020, , Pages 1033-1039

https://doi.org/10.22034/ecc.2020.250064.1075

Abstract
  The 2-degree of a vertex v of a simple graph G is the number of vertices which are at distance two from v in G and is denoted by d2(v). In this article, we compute exact values of a ...  Read More
Multiplicative leap Zagreb indices of T-thorny graphs
Multiplicative leap Zagreb indices of T-thorny graphs

Raad Sehen Haoer; Mohanad Ali Mohammed; Tamileelam Selvarasan; Natarajan Chidambaram; Narasimhan Devadoss

Volume 2, Issue 8 , August 2020, , Pages 841-846

https://doi.org/10.22034/ecc.2020.107875

Abstract
  Let G=(V, E) is a molecular graph in which the vertex set V represents atoms and the edge set E represents the bonds between the atoms, corresponding to a chemical compound. In this ...  Read More
F-leap index of some special classes of bridge and chain graphs
F-leap index of some special classes of bridge and chain graphs

Mohanad Ali Mohammed; Raad Sehen Haoer; Janet Robert; Natarajan Chidambaram; Narasimhan Devadoss

Volume 2, Issue 7 , July 2020, , Pages 827-833

https://doi.org/10.33945/SAMI/ECC.2020.7.10

Abstract
  The 2-degree of a vertex v in a (molecular) graph G is the number of vertices which are at distance two from v in G. The F-leap index of a molecular graph G is the sum of cubes of the ...  Read More
The eccentric connectivity index of polycyclic aromatic hydrocarbons (PAHs)
The eccentric connectivity index of polycyclic aromatic hydrocarbons (PAHs)

Mehdi Alaeiyan; Chidambaram Natarajan; G Sathiamoorthy; Mohammad Reza Farahani

Volume 2, Issue 6 , June 2020, , Pages 646-651

https://doi.org/10.33945/SAMI/ECC.2020.6.1

Abstract
  Mathematical chemistry is the area of research engaged in new application of Mathematics in Chemistry. Major areas of research in mathematical chemistry include chemical graph theory. ...  Read More