摘要
Let H be a finite-dimensional Hopf algebra and A an H-module algobra. Criteria for the smash product A#H to be prime are obtained. In particular, a correct statement of S. Montgomery’s question is given.
Let H be a finite-dimensional Hopf algebra and A an H-module algebra. Criteria for the smash product A # H to be prime are obtained. In particular, a correct statement of S. Montgomery's question is given.