Journal of Lie Theory 13 (2003), No. 2, 383--385
Copyright Heldermann Verlag 2003
New a-T-menable HNN-Extensions
Swiatoslaw R. Gal
Instytut Matematyczny, Uniwersytet Wroclawski, pl. Grunwaldzki 2/4, 50-384 Wroclaw, Poland
Tadeusz Januszkiewicz
Instytut Matematyczny, Uniwersytet Wroclawski, pl. Grunwaldzki 2/4, 50-384 Wroclaw, Poland
The Baumslag-Solitar groups are a-T-menable. This is proved by embedding them into topological groups and studying representation theoretic properties of the latter. The paper is motivated by a question of A. Valette.
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