A dichotomy for Polish modules

Let \(R\) be a ring equipped with a proper norm. We show that under suitable conditions on \(R\), there is a natural basis under continuous linear injection for the set of Polish \(R\)-modules which are not countably generated. When \(R\) is a division ring, this basis can be taken to be a singleton...

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Veröffentlicht in:arXiv.org 2021-12
Hauptverfasser: Frisch, Joshua, te Shinko
Format: Artikel
Sprache:eng
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Zusammenfassung:Let \(R\) be a ring equipped with a proper norm. We show that under suitable conditions on \(R\), there is a natural basis under continuous linear injection for the set of Polish \(R\)-modules which are not countably generated. When \(R\) is a division ring, this basis can be taken to be a singleton.
ISSN:2331-8422