Equivariant bundles and absorption

For a locally compact group \(G\) and a strongly self-absorbing \(G\)-algebra \((\mathcal{D},\delta)\), we obtain a new characterization of absorption of a strongly self-absorbing action using almost equivariant completely positive maps into the underlying algebra. The main technical tool to obtain...

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Veröffentlicht in:arXiv.org 2021-06
Hauptverfasser: ough, Marzieh, Gardella, Eusebio
Format: Artikel
Sprache:eng
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Zusammenfassung:For a locally compact group \(G\) and a strongly self-absorbing \(G\)-algebra \((\mathcal{D},\delta)\), we obtain a new characterization of absorption of a strongly self-absorbing action using almost equivariant completely positive maps into the underlying algebra. The main technical tool to obtain this characterization is the existence of almost equivariant lifts for equivariant completely positive maps, proved in recent work of the authors. This characterization is then used to show that an equivariant \(C_0(X)\)-algebra with \(\mathrm{dim}_{\mathrm{cov}}(X)
ISSN:2331-8422