Quantized cohomological Hall algebra of the $d$-loop quiver revisited

Neil J. Y. Fan, Changjian Fu, Liangang Peng

Let $\Lambda$ be the set of partitions of length $\ge 0$. We introduce an $\mathbb{N}$-graded algebra ${\mathbb{A}}_q^d(\Lambda )$ associated to $\Lambda$, which can be viewed as a quantization of the…