Contractive representations of odometer semigroup

Fuente: arXiv
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Autori principali: Ghatak, Anindya, Rakshit, Narayan, Sarkar, Jaydeb, Suryawanshi, Mansi
Natura: Preprint
Pubblicazione: 2024
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author Ghatak, Anindya
Rakshit, Narayan
Sarkar, Jaydeb
Suryawanshi, Mansi
author_facet Ghatak, Anindya
Rakshit, Narayan
Sarkar, Jaydeb
Suryawanshi, Mansi
contents Given a natural number $n \geq 1$, the odometer semigroup $O_n$, also known as the adding machine or the Baumslag-Solitar monoid with two generators, is a well-known object in group theory. This paper examines the odometer semigroup in relation to representations of bounded linear operators. We focus on noncommutative operators and prove that contractive representations of $O_n$ always admit to nicer representations of $O_n$. We give a complete description of representations of $O_n$ on the Fock space and relate it to the odometer lifting and subrepresentations of $O_n$. Along the way, we also classify Nica covariant representations of $O_n$.
format Preprint
id arxiv_https___arxiv_org_abs_2405_14157
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Contractive representations of odometer semigroup
Ghatak, Anindya
Rakshit, Narayan
Sarkar, Jaydeb
Suryawanshi, Mansi
Functional Analysis
Complex Variables
Group Theory
Operator Algebras
47A13, 46L05, 47A20, 30H10, 20E08, 32A35
Given a natural number $n \geq 1$, the odometer semigroup $O_n$, also known as the adding machine or the Baumslag-Solitar monoid with two generators, is a well-known object in group theory. This paper examines the odometer semigroup in relation to representations of bounded linear operators. We focus on noncommutative operators and prove that contractive representations of $O_n$ always admit to nicer representations of $O_n$. We give a complete description of representations of $O_n$ on the Fock space and relate it to the odometer lifting and subrepresentations of $O_n$. Along the way, we also classify Nica covariant representations of $O_n$.
title Contractive representations of odometer semigroup
topic Functional Analysis
Complex Variables
Group Theory
Operator Algebras
47A13, 46L05, 47A20, 30H10, 20E08, 32A35
url https://arxiv.org/abs/2405.14157