Rabia Nazir2025-11-182025-11-182017https://escholar.umt.edu.pk/handle/123456789/10470In this thesis, we introduced the edge version of harmonic index and harmonic polynomial on the basis of the edges of a graph. Then we computed the edge version of harmonic index and polynomial for some standard classes of graphs. We also discussed some examples of rooted product graphs and bridge graphs in the context of harmonic index and polynomial.enTechnical Report