Waring decompositions of special binomials

Fuente: arXiv
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Autores principales: Chiantini, Luca, Gesmundo, Fulvio, Marziali, Sara
Formato: Preprint
Publicado: 2025
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author Chiantini, Luca
Gesmundo, Fulvio
Marziali, Sara
author_facet Chiantini, Luca
Gesmundo, Fulvio
Marziali, Sara
contents We determine the Waring rank of homogeneous polynomials of the form $x^ky^kz^k + \ell^{3k}$ where $\ell$ is a linear form. The result is based on the study of the Hilbert function and the resolution of special configurations of points in $\mathbb{P}^2$. As a byproduct of our result, we show that the monomial $x^ky^kz^k$ does not have irredundant decompositions of length $(k+1)^2 +1$.
format Preprint
id arxiv_https___arxiv_org_abs_2512_13805
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Waring decompositions of special binomials
Chiantini, Luca
Gesmundo, Fulvio
Marziali, Sara
Algebraic Geometry
14N07, 14N05, 15A69
We determine the Waring rank of homogeneous polynomials of the form $x^ky^kz^k + \ell^{3k}$ where $\ell$ is a linear form. The result is based on the study of the Hilbert function and the resolution of special configurations of points in $\mathbb{P}^2$. As a byproduct of our result, we show that the monomial $x^ky^kz^k$ does not have irredundant decompositions of length $(k+1)^2 +1$.
title Waring decompositions of special binomials
topic Algebraic Geometry
14N07, 14N05, 15A69
url https://arxiv.org/abs/2512.13805