Geometric progressions in distance sets in odd dimensions over prime fields
For $E\subset\mathbb{F}_p^d$, let $Δ(E)=\{Q_d(x-y):x,y\in E\}$, where $Q_d(z)=z_1^2+\cdots+z_d^2$. We introduce and study the problem of the existence of nondegenerate three-term geometric progressions in the distance set $Δ(E)$ when $d$ is odd. If $M_{GP,d}(p)$ denotes the largest size of a set whose distance set contains no such progression, then, for every prime $p\geq7$ and every integer $m\geq0$, \[ p^mM_{GP,1}(p)\leq M_{GP,2m+1}(p) \leq4p^mM_{GP,1}(p). \] For all sufficiently large primes $p$, we also prove \[ p^{m+\frac{7}{26}}\leq M_{GP,2m+1}(p) \leq Cp^{m+\frac{16}{25}}, \] where $C$ is an absolute positive constant.
Authors
- Boqing Xue (ORCID: https://orcid.org/0000-0002-4201-3817)
- Dung The Tran
- Thang Pham
Publication Details
- Journal
- arXiv (Cornell University)
- Published
- 2026-10-26
- DOI
- https://doi.org/10.48550/arxiv.2610.34758
- Primary Topic
- Limits and Structures in Graph Theory
- Type
- preprint