Title of article :
EXPONENTIAL SECOND ZAGREB INDEX OF CHEMICAL TREES
Author/Authors :
Balachandran, Selvaraj Department of Mathematics and Applied Mathematics - University of the Free State, bloemfontein, South Africa , Vetrik, Tomas Department of Mathematics and Applied Mathematics - University of the Free State, bloemfontein, South Africa
Abstract :
Cruz, Monsalve and Rada [Extremal values of vertex-degree-based topological indices of chemical trees, Appl. Math. Comput. 380 (2020) 125281] posed an open problem to find the maximum value of the exponential second Zagreb index for chemical trees of given order. In this paper, we solve the open problem completely.
Keywords :
Topological index , degree , extremal graph theory
Journal title :
Transactions on Combinatorics
