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Ordering chemical trees by Wiener polarity index
Applied Mathematics and Computation, 2017zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Ali Reza Ashrafi, Ali Ghalavand
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Extremal values of vertex-degree-based topological indices of chemical trees
Applied Mathematics and Computation, 2020One important topic in chemical graph theory is the extremal value problem of vertex-degree-based topological indices over chemical trees. It is our main goal in this paper to unify many of these results in one general theorem which captures the common ...
Juan Rada, Roberto Cruz, Juan Monsalve
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A note on chemical trees with minimum Wiener polarity index
Applied Mathematics and Computation, 2018The Wiener polarity index (usually denoted by Wp) of a graph G is defined as the number of unordered pairs of the vertices of G which are at distance 3. Denote by CTn the family of all n-vertex chemical trees. In a recent paper, Ashrafi and Ghalavand [1]
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A Linear Algorithm for the Hyper-Wiener Index of Chemical Trees
An algorithm with a complexity linear in the number of vertices is proposed for the computation of the Hyper-Wiener index of chemical trees. This complexity is the best possible.
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A Collective Property of Trees and Chemical Trees
Journal of Chemical Information and Computer Sciences, 1998The Wiener index (W) and the Hosoya polynomial (H) have been calculated for all trees (and thus for all chemical trees) with 20 and fewer vertices. Corroborating an earlier observation (Razinger, M. et al. J. Chem. Inf. Comput. Sci. 1985, 25, 23−27), we show that the ability of W to distinguish between nonisomorphic n-vertex trees (respectively ...
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