Kappa-Minkowski differential calculi and star product
  We present the star-product algebra of the kappa-deformation of Minkowski space and the formulation of Poincare covariant differential calculus. We use these tools to construct a twisted K-cycle over the algebra and a twisted cyclic cocycle. 
Flavio Mercati, Andrzej Sitarz
math-ph hep-th math.MP