Phantom Maps and Purity in Modular Repre
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D.J. Benson
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Article
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2002
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Elsevier Science
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English
β 88 KB
In the third installment of this paper, we exhibit two phantom maps between kG-modules, whose composite is not projective, whenever k is an uncountable field of characteristic p and G is a finite group of p-rank at least 2.