Cycle type factorizations in $\mathrm{GL}_n \mathbb{F}_q$
Abstract
Recent work by Huang, Lewis, Morales, Reiner, and Stanton suggests that the regular elliptic elements of are somehow analogous to the -cycles of the symmetric group. In 1981, Stanley enumerated the factorizations of permutations into products of -cycles. We study the analogous problem in of enumerating factorizations into products of regular elliptic elements. More precisely, we define a notion of cycle type for and seek to enumerate the tuples of a fixed number of regular elliptic elements whose product has a given cycle type. In some special cases, we provide explicit formulas, using a standard character-theoretic technique due to Frobenius by introducing simplified formulas for the necessary character values. We also address, for large , the problem of computing the probability that the product of a random tuple of regular elliptic elements has a given cycle type. We conclude with some results about the polynomiality of our enumerative formulas and some open problems.
Keywords
Cite
@article{arxiv.2001.10572,
title = {Cycle type factorizations in $\mathrm{GL}_n \mathbb{F}_q$},
author = {Graham Gordon},
journal= {arXiv preprint arXiv:2001.10572},
year = {2020}
}
Comments
37 pages, 1 figure, all comments are welcome