2 papers
math.CO2026
Topological indices on self-similar graphs generated by groups
Daniele D'Angeli, Stefan Hammer, Emanuele Rodaro
In this paper, we determine precise formulas for the diameters, the number of perfect matchings, and the Tutte polynomials for an infinite family of finite graphs, namely the Schre…
math.CO2022
Comparing Wiener, Szeged and revised Szeged index on cactus graphs
Stefan Hammer
We show that on cactus graphs the Szeged index is bounded above by twice the Wiener index. For the revised Szeged index the situation is reversed if the graph class is further rest…