English

An Orthogonal View of Gau\ss ian Polynomials

Number Theory 2025-10-17 v1 Combinatorics

Abstract

We establish an alternative, ``perpendicular" collection of generating functions for the coefficients of Gaussian polynomials, [N+mm]q\begin{bmatrix}N+m\\m\end{bmatrix}_q. We provide a general characterization of these perpendicular generating functions. For small values of mm, unimodality of the coefficients of Gaussian polynomials is easily proved from these generating functions. Additionally, we uncover new and surprising identities for the differences of Gaussian polynomial coefficients, including a very unexpected infinite family of congruences for coefficients of [N+44]q\begin{bmatrix}N+4\\4\end{bmatrix}_q.

Keywords

Cite

@article{arxiv.2510.14124,
  title  = {An Orthogonal View of Gau\ss ian Polynomials},
  author = {Christian Krattenthaler and Brandt Kronholm and Paul Marsh},
  journal= {arXiv preprint arXiv:2510.14124},
  year   = {2025}
}

Comments

AmS-LaTeX, 26 pages