Cocycle Deformations for Liftings of Quantum Linear Spaces
Cocycle Deformations for Liftings of Quantum Linear Spaces
Let A be a Hopf algebra over a field K of characteristic 0, and suppose there is a coalgebra projection π from A to a sub-Hopf algebra H that splits the inclusion. If the projection is H-bilinear, then A is isomorphic to a biproduct R#ξ H where (R, ξ) is …