Szeged Related Indices of Unilateral Polyomino Chain and Unilateral Hexagonal Chain.

In theoretical chemistry, the Szeged index and Szeged related indices were introduced to measure the stability of alkanes and the strain energy of cycloalkanes. In this paper, we determine the edge-vertex Szeged index and vertex-edge Szeged index of unilateral polyomino chain and unilateral hexagonal chain. Furthermore, the total Szeged indices, third atom bond connectivity indices, PI polynomials, vertex PI polynomials, Szeged polynomials and edge Szeged polynomials of these chemical structures are presented. [ABSTRACT FROM AUTHOR]