Free groups and finite type invariants of pure braids

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Finite type invariants (also known as Vassiliev invariants) of pure braids are considered from a group-theoretic point of view. New results include a construction of a universal invariant with integer coefficients based on the Magnus expansion of a free group and a calculation of numbers of independent invariants of each type for all pure braid groups.
14 pages, many figures

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Geometric Topology

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http://salesiana.dossiersoluciones.com/handle/123456789/79092

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/math/9909070
 http://arxiv.org/abs/math/9909070

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arXiv