Projective modules, augmentation and ide
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Ioannis Emmanouil
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Article
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2001
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Elsevier Science
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English
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We consider a condition on a group G, that was studied by Strebel and independently by Strojnowski, which implies that the complex group algebra of G has no non-trivial idempotents. We elaborate on that technique and slightly relax the Strebel-Strojnowski condition. This enables us to prove in a rel