Yet another Proof of an old Hat
History and Overview
2021-11-05 v1 Number Theory
Abstract
Every odd prime number p can be written in exactly (p + 1)/2 ways as a sum ab + cd with min(a, b) > max(c, d) of two ordered products. This gives a new proof Fermat's Theorem expressing primes of the form 1 + 4N as sums of two squares 1 .
Cite
@article{arxiv.2111.02788,
title = {Yet another Proof of an old Hat},
author = {Roland Bacher},
journal= {arXiv preprint arXiv:2111.02788},
year = {2021}
}