Nilpotent cohomology classes and some ex
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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
β 121 KB
In view of its importance for the study of idempotents in group rings, a certain class C of groups, deΓΏned by means of a cohomological condition, was introduced by Emmanouil (Invent. Math. 132 (1998) 307-330). In the present paper, we establish the limitation of that class by constructing explicit e