Leap indices and their polynomials of the derived graph of the subdivision of certain polyphenyls
Leap indices and their polynomials of the derived graph of the subdivision of certain polyphenyls

Fatima Asif; Zohaib Zahid; Mohammad Reza Farahani; Murat Cancan; Suleyman Ediz

Volume 2, Issue 12 , December 2020, , Pages 1195-1201

https://doi.org/10.22034/ecc.2020.258210.1104

Abstract
  Topological indices are real (numerical) values which are associated with chemical compositions to correlate with chemical structure with different physical properties, chemical and ...  Read More
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