11 citations · 25 across the 9 of their papers we have counts for
13 papers
Universal lifting theorem and quasi-Poisson groupoids
David Iglesias Ponte, Camille Laurent-Gengoux, Ping Xu
We prove the universal lifting theorem: for an -simply connected and -connected Lie groupoid $\gm$ with Lie algebroid , the graded Lie algebra of multi-differentials on $A…
A Class of integrable Spin Calogero-Moser systems II: Exact Solvability
Luen-Chau Li
In a previous paper, we introduce a class of integrable spin Calogero-Moser systems associated with the classical dynamical r-matrices with spectral parameter. Here the main purpos…
Chern character for twisted K-theory of orbifolds
Jean-Louis Tu, Ping Xu
For an orbifold X and , we introduce the twisted cohomology and prove that the Connes-Chern character establishes an isomorphism between the twisted K…
Chern-Weil map for principal bundles over groupoids
Camille Laurent-Gengoux, Jean-Louis Tu, Ping Xu
The theory of principal -bundles over a Lie groupoid is an important one, unifying the various types of principal -bundles, including those over manifolds, those over orbifol…
Momentum Maps and Morita Equivalence
Ping Xu
We introduce quasi-symplectic groupoids and explain their relation with momentum map theories. This approach enables us to unify into a single framework various momentum map theori…
Equivariant gerbes over compact simple Lie groups
Kai Behrend, Ping Xu, Bin Zhang
Using groupoid -central extensions, we present, for a compact simple Lie group , an infinite dimensional model of -gerbe over the differential stack whose Dixmie…