A note on finite-dimensional quotients and the problem of automatic continuity for twisted convolution algebras

In this note, we will show that the twisted convolution algebra \(L^{1}_{\alpha,\omega}(\mathbb{G},\mathcal{A})\) associated with a twisted action of a locally compact group \(\mathbb{G}\) on a \(C^{*}\)-algebra \(\mathcal{A}\) has the following property: Every quotient by a closed two-sided ideal of finite codimension produces a semisimple algebra. Afterward, we use this property, together with results by H. Dales and G. Willis, to extend previous results by the author and to produce large classes of examples of algebras with automatic continuity properties.

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Publication Details

Journal
Cubo
Published
2025-08-08
DOI
https://doi.org/10.56754/0719-0646.2702.329
Primary Topic
Advanced Topics in Algebra
Type
article
Field-Weighted Citation Impact
0.00
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article

A note on finite-dimensional quotients and the problem of automatic continuity for twisted convolution algebras

Felipe I. Flores
Cubo
Advanced Topics in Algebra
article

A note on finite-dimensional quotients and the problem of automatic continuity for twisted convolution algebras

Felipe I. Flores
article en

Abstract

In this note, we will show that the twisted convolution algebra \(L^{1}_{\alpha,\omega}(\mathbb{G},\mathcal{A})\) associated with a twisted action of a locally compact group \(\mathbb{G}\) on a \(C^{*}\)-algebra \(\mathcal{A}\) has the following property: Every quotient by a closed two-sided ideal of finite codimension produces a semisimple algebra. Afterward, we use this property, together with results by H. Dales and G. Willis, to extend previous results by the author and to produce large classes of examples of algebras with automatic continuity properties.

CuboVol. 27(2)
University of Virginia (US)
Openalex Percentile: Top 63%
Advanced Topics in Algebra
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