Baum–Connes Conjecture and Group Actions on Trees

Oyono-Oyono, Hervé

Université Blaise Pascal, Clermont-Ferrand, Départment de Mathématiques, Complexe Scientifique des Czeaux, 63177 Aubiére Cedex, France. e-mail: [email protected]

K-Theory 24(2):p 115-134, October 2001.

We check, that the Baum–Connes conjecture with coefficients, for groups acting on oriented trees, is true if and only if it is true for the stabilizer groups of the vertices.