On a short exact sequence and extensions
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Conchita MartΔ±Μnez-PΓ©rez
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Article
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2001
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Elsevier Science
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English
β 118 KB
This paper is concerned with the second Loewy layer of the projective cover of an irreducible KG-module U , where K is a ΓΏeld of prime characteristic p and G a ΓΏnite group such that p||G|. We use elementary cohomological techniques to obtain under certain circumstances a short exact sequence and to