2 problems

Let $Q$ be a quiver, let $\boldsymbol{\boldsymbol{\times}}$ denote its doubled quiver, and let $\boldsymbol{\boldsymbol{\times}}$ be the deformed preprojective algebra obtained fro…

Let $K$ be a field of characteristic different from $2$, and let $\Delta$ be a generalized Dynkin type. Consider a deformed preprojective $K$-algebra of type $\Delta$ and the prepr…