2 papers
math.CO2023
Discovering product and coproduct Rules for Bases of through Supercharacters
Woo-Seok Jung, Young-Tak Oh
In this paper, we establish product and coproduct rules for three bases of the Hopf algebra of quasisymmetric functions over , with being either $\mathbb{C…
math.CO2022
Categorifications of using supercharacter theories and a new basis for
Woo-Seok Jung, Young-Tak Oh
Let us fix a positive integer . For each positive integer , we consider a normal supercharacter theory of , where is the direct-product of $n-1…