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Traceless tensors and invariants

Published online by Cambridge University Press:  01 July 1998

Department of Mathematics, University of Athens, Panepistimiopolis 157 84, Greece; e-mail:


For G a classical group of type Bn, Cn or Dn defined over an algebraically closed field (of characteristic other than two if G is a special orthogonal group), we show that the centralizer algebra of G on the space of endomorphisms of the module of traceless tensors Wr is naturally isomorphic to the group algebra of the symmetric group Sr if r[les ]n (for G of type Bn or Cn) or if r<n (for G of type Dn). This extends a characteristic zero result of Brauer and Weyl and recovers some of the related characteristic free results that De Concini and Strickland obtained for G of type Cn.

Research Article
Cambridge Philosophical Society 1998

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