On injective homomorphisms for pure braid groups, and associated Lie algebras

Details On injective homomorphisms for pure braid groups, and associated Lie algebras On injective homomorphisms for pure braid groups, and associated Lie algebras

2004-04-15

arxiv.org/abs/math/0404278v2

Mathematics

Group Theory

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Scientific paper

The question of whether a representation of Artin's pure braid group is faithful is translated to certain properties of the Lie algebra arising from the descending central series of the pure braid group, and thus the Vassiliev invariants of pure braids via work of T. Kohno \cite{kohno1,kohno2}. The main result is a Lie algebraic condition which guarantees that a homomorphism out of the classical pure braid group is faithful. However, it is unclear whether the methods here can be applied to any open cases such as the Gassner representation.

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