Introduction: The chemical structure can be represented by a graph with the notion
of vertices and edges specifying the atom and bonds, respectively.
Materials and Methods: Topological indices are the numbers which are derived from a molecular
graph. A topological index is a numeric quantity of a molecular graph that is mathematically
Results: In this paper, we computed a certain degree-based topological indices of threelayered
single-walled titania nanosheets and nanotubes.
Conclusion: The application of topological indices is vital in quantitative structure-property
relationships (QSPR) and quantitative structure-activity relationships (QSAR) studies.