ON SOME SCHUR ALGEBRAS Choi, Eun-Mi; Lee, Hei-Sook;
A Schur algebra was generalized to projective Schur algebra by admitting twisted group algebra. A Schur algebra is a projective Schur algebra with trivial 2-cocycle. In this paper we study situations that Schur algebra is a projective Schur algebra with nontrivial cocycle, and we find a criterion for a projective Schur algebra to be a Schur algebra.
group representation;character;Schur and projective Schur algebra;
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