2026-06-27T23:50:09Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/1346402026-04-10T23:49:08Zcom_20.500.14352_14col_20.500.14352_15

Martínez Pérez, Álvaro Molina, Edil D. Rodríguez, José M. Sigarreta, José M. 2026-04-10T14:21:52Z 2026-04-10T14:21:52Z 2025 10.2298/FIL2509069M https://hdl.handle.net/20.500.14352/134640 https://doi.org/10.2298/FIL2509069M Topological indices are used to understand physicochemical properties of chemical compounds, since they capture some properties of a molecule in a single number. The aim of this paper is to obtain new results for the Sum Lordeg Index. We provide some relations between the Sum Lordeg Index and other classic topological indices. Moreover, we show upper and lower bounds for this topological index on unicyclic graphs and find the corresponding extremal graphs. Finally, we show that the Sum Lordeg Index is an important tool for predicting the boiling point of cycloalkanes isomers. eng open access On Sum Lordeg index: theory and applications journal article