Eccentricity based topological indices of some graphs

Topological indices are real numbers that are presented as graph parameters introduced during studies conducted on the molecular graphs in chemistry and can describe some physical and chemical properties of molecules. In this paper we compute eccentricity based topological indices for crown graph, gear graph, friendship graph, helm graph flower graph and their line graphs.The first author is supported by University Grants Commission, Government of India, for the financial support under the Basic Science Research Fellowship. UGC vide No.F. 25-1/2014-15, (BSR)/7-349/2012 (BSR), January, 2015.The Second author is partially supported by the University Grants Commission for financial assistance under No. F-510/12/DRS-II/2018(SAP-I).Publisher's Versio