Mathematics – Rings and Algebras
Scientific paper
2010-10-22
Mathematics
Rings and Algebras
14 pages; uses xypic
Scientific paper
We give a new description of the configuration pairing of Sinha and Walter by showing that it computes coefficients in the associative, preLie, or graph polynomial of a Lie bracket expression. We also connect the graph complexes of Sinha and Walter with preLie algebras. Examples apply the combinatorial definition of the configuration pairing to compute coefficients in the associative (noncommutative) polynomial of Lie elements. This outlines a new way of understanding and computing with Lie algebras.
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