Year: 2026
Type: preprint
Abstract: Let $n\ge 4$ be an even integer. We show that $\{1^{σ(1)},2^{σ(2)},\ldots,n^{σ(n)}\}$ is a complete residue system modulo $n$ for some permutation $σ$ of $\{1,2,\ldots,n\}$ if and only if $p:=n/2$ is prime and $p-1$ is squarefree. This complements the results in [Int. J. Number Theory \textbf{14} (2018), 653--660], where an analogue characterization has been proved for odd integers.
Source: arXiv (Cornell University)
Author: Leonetti, Paolo
Language: English
Subfield: Algebra and Number Theory
Field: Mathematics
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7213606277