Forgotten Index and Forgotten Coindex of Graphs

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J. Senbaga Malar
A. Meenakshi


F index is a connected graph, sum of the cubes of the vertex degrees. The forgotten topological index has been designed to be employed in the examination of drug molecular structures, which is extremely useful for pharmaceutical and medical experts in understanding the biological activities. Among all the topological indices, the forgotten index is based on degree connectivity on bonds. This paper characterized the forgotten index of union of graphs, join graphs, limits on trees and its complements, and accuracy is measured. Co-index values are analyzed for the various molecular structure of chemical compounds


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Malar JS, Meenakshi A. Forgotten Index and Forgotten Coindex of Graphs. Baghdad Sci.J [Internet]. 2024 Feb. 1 [cited 2024 Feb. 22];21(2):0504. Available from:


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Furtula B, Gutman I. A forgotten topological index. J Math Chem. 2015; 53: 1184 - 1190.

Gao W, Siddiqui MK, Imran M, Jamil MK, Farahani MR. Forgotten topological index of chemical structure in drugs. Saudi Pharm J. 2016; 24(3): 258 - 264.

Azari M, Nezhad FF. Some Results on Forgotten Topological Coindex. Iranian J Math Chem. 2019; 10(4): 307 - 318.

Akhter S, Imran M. Computing the forgotten topological index of four operations on graphs. AKCE Int J Graphs Comb. 2017; 14(1): 70 - 79.

Jahanbani A, Atapour M, Khoeilar R. New results on the forgotten topological index and coindex. J Math. 2021; 8700736(11): 1-11.

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