Erratum to Integrality of L 2-Betti numbers Erratum First Online: 18 January 2002 Received: 09 February 2001 DOI:
Cite this article as: Schick, T. Math Ann (2002) 322: 421. doi:10.1007/s002080100282 Abstract
A gap has been found in the proof of Proposition 3 of . Consequently, this result and the consequences drawn in the paper have to be considered as conjectures. In particular, it is not proved that the Atiyah conjecture is stable under extensions with free quotient groups and under free products with free groups..
Mathematics Subject Classification (2000): 55N25, 16S34, 46L50 55N25 16S34 46L50
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W. Dicks and T. Schick. Graphs of groups and the Atiyah conjecture for onerelator groups. Preprintseries SFB 478, Münster no. 106, available via http://xxx.uniaugsburg. de/abs/math/0004156.
Peter A. Linnell. Analytic versions of the zero divisor conjecture. In: Geometry and cohomology in group theory (Durham, 1994), pages 209*248. Cambridge Univ. Press, Cambridge, 1998.
Thomas Schick. Integrality of L2-Betti numbers. Math. Ann., 317(4):727–750, 2000.
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