Braid commutators and delta finite-type invariants

Details Braid commutators and delta finite-type invariants Braid commutators and delta finite-type invariants

1999-07-12

arxiv.org/abs/math/9907071v1

Mathematics

Geometric Topology

6 pages, 2 figures, based on talk given in Delphi, August 1998

Scientific paper

Delta finite-type invariants are defined analogously to finite-type
invariants, using delta moves instead of crossing changes. We show that they
are closely related to the lower central series of the commutator subgroup of
the pure braid group.

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