139 citations · 204 across the 9 of their papers we have counts for
Showing 2006Show all
2 papers · 1 filter
math.DG2006★ 28 cited
Differentiable Stacks and Gerbes
Kai Behrend, Ping Xu
We introduce differentiable stacks and explain the relationship with Lie groupoids. Then we study -bundles and -gerbes over differentiable stacks. In particular, we estab…
math.AG2006
Super-rigid Donaldson-Thomas invariants
Kai Behrend, Jim Bryan
We solve the part of the Donaldson-Thomas theory of Calabi-Yau threefolds which comes from super-rigid rational curves. As an application, we prove a version of the conjectural Gro…