Braid commutators and delta finite-type invariants
Abstract
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.
- Publication:
-
arXiv Mathematics e-prints
- Pub Date:
- July 1999
- DOI:
- arXiv:
- arXiv:math/9907071
- Bibcode:
- 1999math......7071S
- Keywords:
-
- Geometric Topology;
- Quantum Algebra;
- 57M25
- E-Print:
- 6 pages, 2 figures, based on talk given in Delphi, August 1998