Geodesic
Erratum to: "The minimal exact crossed product"
Documenta mathematica, Tome 26 (2021), pp. 1629-1632 Cet article a éte moissonné depuis la source EMS Press

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We point out some mistakes in our paper [ibid. 23, 2043–2077 (2018; Zbl 1430.46050)]. The most severe one is a gap in our proof that the smallest exact crossed product functor, as constructed in [loc. cit.], is automatically Morita compatible. We were not able to close this gap so far. So, at this time, we cannot conclude that the C∗-group algebra CεM​∗​(G)=C⋊εM​​G corresponding to the smallest exact Morita compatible crossed-product functor ⋊εM​​ is equal to the reduced group C∗-algebra Cr∗​(G).
DOI : 10.4171/dm/851
Classification : 46L08, 46L55, 46L80
Mots-clés : exact groups, exotic crossed products, Baum-Connes conjecture, exotic group algebras 
@article{10_4171_dm_851,
     author = {Alcides Buss and Siegfried Echterhoff and Rufus Willett},
     title = {Erratum to: {"The} minimal exact crossed product"},
     journal = {Documenta mathematica},
     pages = {1629--1632},
     year = {2021},
     volume = {26},
     doi = {10.4171/dm/851},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/dm/851/}
}
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Alcides Buss; Siegfried Echterhoff; Rufus Willett. Erratum to: "The minimal exact crossed product". Documenta mathematica, Tome 26 (2021), pp. 1629-1632. doi: 10.4171/dm/851

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