On the identification of natural modules
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F. G. Timmesfeld
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Article
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1990
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Springer
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English
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## Dedicated to Professor J. Tits on the occasion of his sixtieth birthday ABSTRACT. Let G be SL,(k) or Sp(2n, k), k a field. Then a criterion for a ZG-module V to be the direct sum of natural, resp. natural and dual, kG-modules is given. In fact this criterion holds for perfect central extensions