From Galois to Hopf Galois : Theory and Practice

  title={From Galois to Hopf Galois : Theory and Practice},
  author={Teresa Crespo and Anna Rio and Montserrat Vela},
Hopf Galois theory expands the classical Galois theory by considering the Galois property in terms of the action of the group algebra k[G] on K/k and then replacing it by the action of a Hopf algebra. We review the case of separable extensions where the Hopf Galois property admits a group-theoretical formulation suitable for counting and classifying, and… CONTINUE READING