Finite Riesz products and Ornstein non-inequalities on quantum tori

Fuente: arXiv
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Main Authors: Tantalakis, Christos P., Wojciechowski, Michał
Format: Preprint
Published: 2026
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author Tantalakis, Christos P.
Wojciechowski, Michał
author_facet Tantalakis, Christos P.
Wojciechowski, Michał
contents We demonstrate a construction of products on the quantum torus $\mathbb{T}_θ^2$ that generalises the usual construction of finite Riesz products on the commutative torus $\mathbb{T}^2$. We explain why the former constitutes a natural analogue of the latter in the non-commutative setting and, based on this construction, as well as on previous results by K. Kazaniecki and the second author, we prove a non-commutative version of an Ornstein non-inequality.
format Preprint
id arxiv_https___arxiv_org_abs_2604_20774
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Finite Riesz products and Ornstein non-inequalities on quantum tori
Tantalakis, Christos P.
Wojciechowski, Michał
Operator Algebras
Functional Analysis
Primary 46L51, 46L52, Secondary: 42A55
We demonstrate a construction of products on the quantum torus $\mathbb{T}_θ^2$ that generalises the usual construction of finite Riesz products on the commutative torus $\mathbb{T}^2$. We explain why the former constitutes a natural analogue of the latter in the non-commutative setting and, based on this construction, as well as on previous results by K. Kazaniecki and the second author, we prove a non-commutative version of an Ornstein non-inequality.
title Finite Riesz products and Ornstein non-inequalities on quantum tori
topic Operator Algebras
Functional Analysis
Primary 46L51, 46L52, Secondary: 42A55
url https://arxiv.org/abs/2604.20774