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2007.16: BASES, FILTRATIONS AND MODULE DECOMPOSITIONS OF FREE LIE ALGEBRAS

2007.16: Ralph Stöhr (2008) BASES, FILTRATIONS AND MODULE DECOMPOSITIONS OF FREE LIE ALGEBRAS. J. Pure Appl. Algebra, 212 (5). pp. 1187-1206. ISSN 0022-4049

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DOI: 10.1016/j.jpaa.2007.09.001

Abstract

We use Lazard Elimination to devise some new bases of the free Lie algebra which (like classical Hall bases) consist of Lie products of left normed basic Lie monomials. Our bases yield direct decompositions of the homogeneous components of the free Lie algebra with direct summands that are particularly easy to describe: they are tensor products of metabelian Lie powers. They also give rise to new filtrations and decompositions of free Lie algebras as modules for groups of graded algebra automorphisms. In particular, we obtain some new decompositions for free Lie algebras and free restricted free Lie algebras over fields of positive characteristic.

Item Type:Article
Uncontrolled Keywords:Free Lie algebras, bases, module decompositions
Subjects:MSC 2000 > 17 Nonassociative rings and algebras
MIMS number:2007.16
Deposited By:Prof Ralph Stöhr
Deposited On:13 January 2008

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