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math.RA2007★ 2 cited
Graded identities of matrix algebras and the universal graded algebra
Eli Aljadeff, Darrell Haile, Michael Natapov
We consider fine G-gradings on M_n(C) (i.e. gradings of the matrix algebra over the complex numbers where each component is 1 dimensional). Groups which provide such a grading are…
math.RA2007★ 1 cited
Projective bases of division algebras and groups of central type II
Michael Natapov
Let G be a finite group and let k be a field. We say that G is a projective basis of a k-algebra A if it is isomorphic to a twisted group algebra k^αG for some class αin H^2(G,k^\t…