Proof of the Agler--McCarthy entropy conjecture

Fuente: arXiv
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Autores principales: Lei, Jialin, Zhang, Teng
Formato: Preprint
Publicado: 2026
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author Lei, Jialin
Zhang, Teng
author_facet Lei, Jialin
Zhang, Teng
contents In 2021, J.~Agler and J.~E. McCarthy proposed a two-step programme toward the celebrated Krzyż conjecture. The first step is to prove an entropy conjecture for polynomials whose zeros all lie on the unit circle; the second is to establish a full degree condition for extremal functions in the Krzyż conjecture. The purpose of this paper is to complete the first step. More precisely, we establish the sharp homogeneous entropy inequality for all non-constant polynomials with zeros on the unit circle and determine the equality cases.
format Preprint
id arxiv_https___arxiv_org_abs_2605_03949
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Proof of the Agler--McCarthy entropy conjecture
Lei, Jialin
Zhang, Teng
Complex Variables
Primary 30C10, Secondary 30A10, 30C15, 30D50, 30H10
In 2021, J.~Agler and J.~E. McCarthy proposed a two-step programme toward the celebrated Krzyż conjecture. The first step is to prove an entropy conjecture for polynomials whose zeros all lie on the unit circle; the second is to establish a full degree condition for extremal functions in the Krzyż conjecture. The purpose of this paper is to complete the first step. More precisely, we establish the sharp homogeneous entropy inequality for all non-constant polynomials with zeros on the unit circle and determine the equality cases.
title Proof of the Agler--McCarthy entropy conjecture
topic Complex Variables
Primary 30C10, Secondary 30A10, 30C15, 30D50, 30H10
url https://arxiv.org/abs/2605.03949