2 papers
math.CO2024
Some properties of the Redei-Berge function and related combinatorial Hopf algebras
Stefan Mitrovic, Tanja Stojadinovic
Stanley and Grinberg introduced the symmetric function associated to digraphs, called the Redei-Berge symmetric function. In [8] is shown that this symmetric function arises from a…
math.CO2024
The e positivity of some new classes of graphs
Stefan Mitrovic, Tanja Stojadinovic
We introduce two classes of graphs - suns and dumbbells, both with few variations and explore their chromatic symmetric function and its -positivity. We also give many connectio…