85 citations · 215 across the 15 of their papers we have counts for
Showing 2006Show all
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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.KT2006★ 3 cited
The ring structure for equivariant twisted K-theory
Jean-Louis Tu, Ping Xu
We prove, under some mild conditions, that the equivariant twisted K-theory group of a crossed module admits a ring structure if the twisting 2-cocycle is 2-multiplicative. We also…
math.DG2006★ 39 cited
Poisson Quasi-Nijenhuis Manifolds
Mathieu Stienon, Ping Xu
We introduce the notion of Poisson quasi-Nijenhuis manifolds generalizing the Poisson-Nijenhuis manifolds of Magri-Morosi. We also investigate the integration problem of Poisson qu…