Tame quivers and affine enveloping algebras

Yong Jiang, Jie Sheng

Let $\mathfrak{g}$ be an affine Kac-Moody algebra with symmetric Cartan datum, ${\mathfrak{n}}^{+}$ be the maximal nilpotent subalgebra of $\mathfrak{g}$. By the Hall algebra approac…