A derived equivalence between cluster equivalent algebras

Claire Amiot (1)

1 IRMA - Institut de Recherche Mathématique Avancée

Let $Q$ be an acyclic quiver. Associated with any element $w$ of the Coxeter group of $Q$, triangulated categories $\underline{\Sub}\Lambda_w$ were introduced in \cite{Bua2}. There are shown to be triangle equivalent to generalized cluster categories $\Cc_{\Gamma_w}$ associated to algebras $\Gamma_w$ of global dimension $\leq 2$ in \cite{ART}. For $w$ satisfying a certain property, called co-$c$-sortable, other algebras $A_w$ of global dimension $\leq 2$ are constructed in \cite{AIRT} with a triangle equivalence $\Cc_{A_w}\simeq \underline{\Sub}\Lambda_w$. The main result of this paper is to prove that the algebras $\Gamma_w$ and $A_w$ are derived equivalent when $w$ is co-$c$-sortable. The proof uses the 2-APR-tilting theory introduced in \cite{IO}.

Mots clés: generalized cluster categories; 2-APR-tilting; derived equivalence; tilting theory

Domaines: Théorie des représentations [math.RT]

Claire Amiot. A derived equivalence between cluster equivalent algebras. Journal of Algebra, 2012, ⟨10.1016/j.jalgebra.2011.11.009⟩. ⟨hal-00437019v2⟩