Hurwitz transitivity conjecture for Singer-cycle factorizations
Hurwitz transitivity conjecture for Singer-cycle factorizations
Let be a Singer cycle in , and consider ordered factorizations into reflections. The multiset is an invariant of the Hurwitz action of the braid group on these factorizations. Hurwitz transitivity conjecture. Any two factorizations with the same multiset lie in the same Hurwitz orbit. In particular, there is only one Hurwitz orbit of factorizations when for any . This is an analogue of the transitivity theorem for shortest factorizations of Coxeter elements in well-generated complex reflection groups; the determinant multiset is the evident obstruction when .
Sources & referencesView supporting material
Primary source
Joel Brewster Lewis, Victor Reiner and Dennis Stanton, “Reflection factorizations of Singer cycles”, arXiv:1308.1468 (2014).
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