Finitarily linear wreath products

Authors
Citation
Baf. Wehrfritz, Finitarily linear wreath products, P EDIN MATH, 43, 2000, pp. 27-41
Citations number
7
Categorie Soggetti
Mathematics
Journal title
PROCEEDINGS OF THE EDINBURGH MATHEMATICAL SOCIETY
ISSN journal
00130915 → ACNP
Volume
43
Year of publication
2000
Part
1
Pages
27 - 41
Database
ISI
SICI code
0013-0915(200002)43:<27:FLWP>2.0.ZU;2-0
Abstract
We consider faithful finitary linear representations of (generalized) wreat h products A wr(Omega) H of groups A by H over (potentially) infinite-dimen sional vector spaces, having previously considered completely reducible suc h representations in an earlier paper. The simpler the structure of A the m ore complex, it seems, these representations can become. If A has no non-tr ivial abelian normal subgroups, the conditions we present are both necessar y and sufficient. They imply, for example, that for such an A, if there exi sts such a representation of the standard wreath product A wr H of infinite dimension, then there already exists one of finite dimension.