Groups, Geometry, and Dynamics


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Volume 9, Issue 3, 2015, pp. 665–682
DOI: 10.4171/GGD/323

Published online: 2015-10-29

The BNS-invariant for the pure braid groups

Nic Koban[1], Jon McCammond[2] and John Meier[3]

(1) University of Maine Farmington, USA
(2) University of California Santa Barbara, USA
(3) Lafayette College, Easton, USA

In 1987 Bieri, Neumann and Strebel introduced a geometric invariant for discrete groups. In this article we compute and explicitly describe the BNS-invariant for the pure braid groups.

Keywords: BNS invariant, sigma invariants, pure braid groups

Koban Nic, McCammond Jon, Meier John: The BNS-invariant for the pure braid groups. Groups Geom. Dyn. 9 (2015), 665-682. doi: 10.4171/GGD/323