In QSAR/QSPR study, physico-chemical properties and topological indices such as Randić, atom-bond connectivity (ABC) and geometric-arithmetic (GA) index are used to predict the bioactivity of chemical compounds. A topological index is actually designed by transforming a chemical structure into a numeric number. These topological indices correlate certain physico-chemical properties like boiling point, stability, strain energy etc. of chemical compounds. Graph theory has found a considerable use in this area of research. The topological indices of certain interconnection networks were studied recently by Imran et al. (Appl Math Comput 244:936–951, 2014). In this paper, we extend this study to n× n Sudoku graphs and derive analytical closed results of general Randić index Rα(G) for different values of for Sudoku (SK). We also compute the general Randić, first Zagreb, ABC, GA, ABC4 and GA5 indices and give closed formulae of these indices for Sudoku graphs.
- Atom-bond connectivity (ABC) index
- General Randić index
- Geometric-arithmetic (GA) index
- Sudoku Graph
ASJC Scopus subject areas
- Computational Mathematics
- Applied Mathematics