Polynomial $D(4)$-quadruples over Gaussian Integers

Fuente: arXiv
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Main Authors: Trebješanin, Marija Bliznac, Babić, Sanda Bujačić
Format: Preprint
Published: 2022
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author Trebješanin, Marija Bliznac
Babić, Sanda Bujačić
author_facet Trebješanin, Marija Bliznac
Babić, Sanda Bujačić
contents A set $\{a, b, c, d\}$ of four non-zero distinct polynomials in $\mathbb{Z}[i][X]$ is said to be a Diophantine $D(4)$-quadruple if the product of any two of its distinct elements increased by 4 is a square of some polynomial in $\mathbb{Z}[i][X]$. In this paper we prove that every $D(4)$-quadruple in $\mathbb{Z}[i][X]$ is regular, or equivalently that the equation $$(a+b-c-d)^2=(ab+4)(cd+4)$$ holds for every $D(4)$-quadruple in $\mathbb{Z}[i][X]$.
format Preprint
id arxiv_https___arxiv_org_abs_2210_10575
institution arXiv
publishDate 2022
record_format arxiv
spellingShingle Polynomial $D(4)$-quadruples over Gaussian Integers
Trebješanin, Marija Bliznac
Babić, Sanda Bujačić
Number Theory
11D09, 11D45
A set $\{a, b, c, d\}$ of four non-zero distinct polynomials in $\mathbb{Z}[i][X]$ is said to be a Diophantine $D(4)$-quadruple if the product of any two of its distinct elements increased by 4 is a square of some polynomial in $\mathbb{Z}[i][X]$. In this paper we prove that every $D(4)$-quadruple in $\mathbb{Z}[i][X]$ is regular, or equivalently that the equation $$(a+b-c-d)^2=(ab+4)(cd+4)$$ holds for every $D(4)$-quadruple in $\mathbb{Z}[i][X]$.
title Polynomial $D(4)$-quadruples over Gaussian Integers
topic Number Theory
11D09, 11D45
url https://arxiv.org/abs/2210.10575