

Author: Mattarei Sandro
Publisher: Taylor & Francis Ltd
ISSN: 0308-1087
Source: Linear and Multilinear Algebra, Vol.59, Iss.4, 2011-04, pp. : 441-449
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Abstract
In a recent study of Engel Lie rings, Serena Cicalo and Willem de Graaf have given a practical set of conditions for an additively finitely generated Lie ring L to satisfy an Engel condition. We present a simpler and more direct proof of this fact. Our main result generalizes this in the language of tensor algebra, and describes a relatively small generating set for the module generated by all n-th tensor powers of elements of a finitely generated -module M, in terms of a generating set for M.
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