We obtain inequalities involving many topological indices in classical graph products by using the f-polynomial. In particular, we work with lexicographic product, Cartesian sum and Cartesian product, and with first Zagreb, forgotten, inverse degree and sum lordeg indices.
Classification
subjects
Mathematics
keywords
cartesian product; cartesian sum; first zagreb index; forgotten index; inverse degree index; lexicographic product; polynomials in graphs; sum lordeg index