%0 Journal Article
%T On universal Lie nilpotent associative algebras
%A Pavel Etingof
%A John Kim
%A Xiaoguang Ma
%J Mathematics
%D 2008
%I arXiv
%X We study the quotient Q_i(A) of a free algebra A by the ideal M_i(A) generated by relation that the i-th commutator of any elements is zero. In particular, we completely describe such quotient for i=4 (for i<=3 this was done previously by Feigin and Shoikhet). We also study properties of the ideals M_i(A), e.g. when M_i(A)M_j(A) is contained in M_{i+j-1}(A) (by a result of Gupta and Levin, it is always contained in M_{i+j-2}(A)).
%U http://arxiv.org/abs/0805.1909v1