Symmetric Invariant Cocycles on the Duals of Q-deformations

@inproceedings{SymmetricIC,
  title={Symmetric Invariant Cocycles on the Duals of Q-deformations},
  author={}
}
    We prove that for q ∈ C * not a nontrivial root of unity any symmetric invariant 2-cocycle for a completion of Uqg is the coboundary of a central element. Equivalently, a Drinfeld twist relating the coproducts on completions of Uqg and U g is unique up to coboundary of a central element. As an application we show that the spectral triple we defined in an earlier paper for the q-deformation of a compact simple simply connected Lie group G does not depend on any choices up to unitary equivalence.