The Jacobian, reflection arrangement and discriminant for reflection Hopf algebras
arXiv:1902.00421
Abstract
We study finite dimensional semisimple Hopf algebra actions on noetherian connected graded Artin-Schelter regular algebras, and introduce definitions of the Jacobian, the reflection arrangement and the discriminant in a noncommutative setting.
39 pages. v2 has changes from original submission. Some parts of Section 4 moved to Section 3, other parts removed and will appear elsewhere