Kentaro Nagao Title: Mutation and wall-crossing in noncommutative Donaldson-Thomas theory Abstract: Recently, B.Szendroi proposed noncommutative Donaldson- Thomas theory for a quiver with a potential which is 3-dimensional graded Calabi-Yau. Given such a quiver and a vertex of it, we can mutate it to provide a new quiver. I will explain the relation between mutation and changing stability conditions in noncommutative Donaldson- Thomas theory. I will also show you examples associated with some toric Calabi-Yau 3-folds.