Sigma index and forgotten index of the subdivision and r-subdivision graphs

AŞCIOĞLU M., CANGÜL İ. N.

Proceedings of the Jangjeon Mathematical Society, cilt.21, sa.3, ss.375-383, 2018 (Scopus) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 21 Sayı: 3
  • Basım Tarihi: 2018
  • Doi Numarası: 10.17777/pjms2018.21.3.375
  • Dergi Adı: Proceedings of the Jangjeon Mathematical Society
  • Derginin Tarandığı İndeksler: Scopus
  • Sayfa Sayıları: ss.375-383
  • Anahtar Kelimeler: Forgotten index, R-subdivision graph, Sigma index, Subdivision graph
  • Bursa Uludağ Üniversitesi Adresli: Evet

Özet

© 2018 Jangjeon Research Institute for Mathematical Sciences and Physics. All rights reserved.Topological graph indices are defined and used by mathematicians and chemists to obtain some chemical properties of a molecule under consideration by calculating the related topological index obtained from the graph modelling the molecule. This saves one from a lot of laboratory work and its labor and cost. In this paper, we concentrate on two of these topological graph indices, namely the sigma index and the forgotten index of a graph. We calculate these two indices for the subdivision and r-subdivision graphs and give examples for some well-known graph classes.