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math.RA2017★ 1 cited
Local cohomology associated to the radical of a group action on a noetherian algebra
Jiwei He, Yinhuo Zhang
An arbitrary group action on an algebra results in an ideal of . This ideal fits into the classical radical theory, and will be called the radi…
math.RA2017★ 2 cited
Cohen-Macaulay invariant subalgebras of Hopf dense Galois extensions
Jiwei He, Yinhuo Zhang
Let be a semisimple Hopf algebra, and let be a noetherian left -module algebra. If is a right -dense Galois extension, then the invariant subalgebra w…