The center of crossed products over simple rings

DOI10.21099/tkbjm/1496161163zbMath0691.16012OpenAlexW654108727MaRDI QIDQ582354

Jianyong Qiao, Sumit K. Garg

Publication date: 1989

Published in: Tsukuba Journal of Mathematics (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.21099/tkbjm/1496161163

zbMATH Keywords

crossed productscenterbasisirreducible modulesfinite groupfixed fieldlinear nonequivalent irreducible projective crossed representationssimple ring

Mathematics Subject Classification ID

Group rings (16S34) Group rings of infinite groups and their modules (group-theoretic aspects) (20C07) Automorphisms and endomorphisms (16W20) Group rings of finite groups and their modules (group-theoretic aspects) (20C05) Projective representations and multipliers (20C25)

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New necessary conditions for abelian Hadamard difference sets ⋮ Square classes of totally positive units ⋮ Meta-abelian unit groups of group algebras are usually abelian ⋮ Units of \(p\)-power order in principal \(p\)-blocks of \(p\)-constrained groups

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