More on the optimal arrangement of $2d$ lines in $\mathbb{C}^d$

Fuente: arXiv
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Autores principales: Iverson, Joseph W., Jasper, John, Mixon, Dustin G.
Formato: Preprint
Publicado: 2024
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author Iverson, Joseph W.
Jasper, John
Mixon, Dustin G.
author_facet Iverson, Joseph W.
Jasper, John
Mixon, Dustin G.
contents We introduce a new infinite family of $d\times 2d$ equiangular tight frames. Many matrices in this family consist of two $d\times d$ circulant blocks. We conjecture that such equiangular tight frames exist for every $d$. We show that our conjecture holds for $d\leq 165$ by a computer-assisted application of a Newton-Kantorovich theorem. In addition, we supply numerical constructions that corroborate our conjecture for $d\leq 1500$.
format Preprint
id arxiv_https___arxiv_org_abs_2410_17379
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle More on the optimal arrangement of $2d$ lines in $\mathbb{C}^d$
Iverson, Joseph W.
Jasper, John
Mixon, Dustin G.
Metric Geometry
Combinatorics
Functional Analysis
We introduce a new infinite family of $d\times 2d$ equiangular tight frames. Many matrices in this family consist of two $d\times d$ circulant blocks. We conjecture that such equiangular tight frames exist for every $d$. We show that our conjecture holds for $d\leq 165$ by a computer-assisted application of a Newton-Kantorovich theorem. In addition, we supply numerical constructions that corroborate our conjecture for $d\leq 1500$.
title More on the optimal arrangement of $2d$ lines in $\mathbb{C}^d$
topic Metric Geometry
Combinatorics
Functional Analysis
url https://arxiv.org/abs/2410.17379