The planar graph braid group commutator presentation conjecture

Let Γ\Gamma be a planar graph, and let B2ΓB_2\Gamma denote its braid group on two strands. A presentation for B2ΓB_2\Gamma should exist in which every relator is a commutator associated to a pair of disjoint simple loops.

Planar graph braid group commutator presentation conjecture. There exists a presentation for B2ΓB_2\Gamma such that the relators are all commutators corresponding to pairs of disjoint simple loops.

This would generalize the preceding theorem, which establishes the analogous presentation result in the setting treated there. The parser supplies no evidence that the conjecture has been resolved.

Sources & referencesView supporting material

Primary source

Daniel Farley and Lucas Sabalka, “Presentations of Graph Braid Groups”, arXiv:0907.2730 (2009).

Additional references

2 papers in this index state this conjecture (2008–2009). The statement above is taken from the most recent of them; the others are arXiv:0805.0082.

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