English

Parking Spaces for Complex Reflection Groups

Combinatorics 2025-02-05 v1

Abstract

We answer an open problem of arXiv:1204.1760 and arXiv:1205.4293, extending their work to irreducible well--generated complex reflection groups WW. We define a combinatorial WW-noncrossing parking space and an algebraic WW-parking space for such WW, and exhibit a (W×C)(W \times C)-equivariant isomorphism between the two. As a consequence of this isomorphism, we enumerate the WW-noncrossing parking functions. Finally, we extend our results to the Fuss case. We prove the results for all such complex reflection groups except G34G_{34}, E7,E_7, and E8E_8.

Keywords

Cite

@article{arxiv.2502.01970,
  title  = {Parking Spaces for Complex Reflection Groups},
  author = {Jason Stack},
  journal= {arXiv preprint arXiv:2502.01970},
  year   = {2025}
}