The classification conjecture for good braid-group representations

About 18 years old · traced to

Let BkB_k be the braid group on kk strands and let SnS_n be the symmetric group. A homomorphism is canonical when n=kn=k and belongs to the canonical construction in the paper; it is standard when k≠nk\ne n and k∣nk\mid n and belongs to the standard family; and it is derived from a canonical or standard homomorphism when it is obtained by the paper's derivation construction.

Classification conjecture. Every good non-cyclic transitive homomorphism Bk→SnB_k\to S_n is canonical when n=kn=k, standard when k≠nk\ne n and k∣nk\mid n, or derived from a canonical or standard homomorphism when k∤nk\nmid n.

This is the paper's proposed complete classification of good transitive non-cyclic permutation representations. The paper proves representative cases but does not establish the full assertion.

References

Primary source

Amiel Ferman, Tahl Nowik, Robert Schwartz and Mina Teicher, “New Permutation Representations of the Braid Group”, arXiv:0811.4204 (2008).

Progress summary

Never refreshed

Nothing recorded yet. Refresh searches the literature and the public web for attempts on this problem, and writes the first summary here.

Solutions 0

No solutions have been posted yet.