Canonical and Lie-algebraic twist deformations of $\kappa$-Poincare and   contractions to $\kappa$-Galilei algebras
  We propose canonical and Lie-algebraic twist deformations of $\kappa$-deformed Poincare Hopf algebra which leads to the generalized $\kappa$-Minkowski space-time relations. The corresponding deformed $\kappa$-Poincare quantum groups are also calculated. Finally, we perform the nonrelativistic contraction limit to the corresponding twisted Galilean algebras and dual Galilean quantum groups. 
Marcin Daszkiewicz