Topological descriptors play a significant role in the selection of leading molecules for
studies/drug design/research. As these descriptors equip the quantitative structure–activity …

Molecular topological indices are numerical descriptor of molecular structure obtained via
molecular graph G. The forgotten topological index F (G) is a vertex degree based …

The forgotten topological index of a (molecule) graph is the sum of cubes of all its vertex
degrees, which plays a significant role in measuring the branching of the carbon atom …

The ℱ‐coindex (forgotten topological coindex) for a simple connected graph G is defined as
the sum of the terms ζ G 2 y+ ζ G 2 x over all nonadjacent vertex pairs (x, y) of G, where ζ G y …

For a (molecular) graph G, the extended adjacency index EA (G) is defined as Equation (1).
In this paper we introduce some graph transformations which increase or decrease the …

Abstract Let A (G) and D (G) be the adjacency matrix and the degree diagonal matrix of a
graph G, respectively. For any real number α∈[0, 1], Nikiforov defined the A α-matrix of a …

The biological, chemical, and structural properties of molecular graphs can be predicted by
using topological indices. The lower and upper bounds of fundamental topological indices …

The forgotten topological index of a graph 𝒢, denoted by F (𝒢), is defined as the sum of
weights d (u) 2+ d (v) 2 overall edges uv of 𝒢, where d (u) denotes the degree of a vertex u …

The forgotten index F (G) is defined as the sum of cubes of the degrees of the vertices of the
graph G. In this paper we establish some new upper bounds for the Forgotten Topological …

设~ $ G $ 为简单图, $ E (G) $ 为其边集, 则~ $ G $ 的指数型反遗忘指数~ $ e^{\frac
{1}{\mathcal {F}}}(G)=\sum_ {uv\in E (G)} e^{\left (\frac {1}{{d_G^ 2 (u)}}+\frac {1}{{d_G^ 2t …