The Szeged index, introduced by Iván Gutman,[1] generalizes the concept of the Wiener index introduced by Harry Wiener.
The Szeged index of a connected graph G is defined as If e is an edge of G connecting vertices u and v, then we write e = uv or e = vu.
One way to measure a network structure is through the so-called topological indices.
Szeged index has been shown to correlate well with numerous biological and physicochemical properties.
The Szeged index of Dendrimer Nanostar of the following figure can be calculated by[2]