%0 Journal Article %T Graded mutation in cluster categories coming from hereditary categories with a tilting object %A Marco Angel Bertani-£¿kland %A Steffen Oppermann %A Anette Wr£¿lsen %J Mathematics %D 2010 %I arXiv %X We present a graded mutation rule for quivers of cluster-tilted algebras. Furthermore, we give a technique to recover a cluster-tilting object from its graded quiver in the cluster category of coh $\mathbb{X}$. %U http://arxiv.org/abs/1009.4812v1