R-trees and the Bieri-Neumann-Strebel invariant.
Levitt, Gilbert
Publicacions Matemàtiques, Tome 38 (1994), p. 195-202 / Harvested from Biblioteca Digital de Matemáticas
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Let G be a finitely generated group. We give a new characterization of its Bieri-Neumann-Strebel invariant Σ(G), in terms of geometric abelian actions on R-trees. We provide a proof of Brown's characterization of Σ(G) by exceptional abelian actions of G, using geometric methods.

Publié le : 1994-01-01
DMLE-ID : 3741 
@article{urn:eudml:doc:41197,
     title = {R-trees and the Bieri-Neumann-Strebel invariant.},
     journal = {Publicacions Matem\`atiques},
     volume = {38},
     year = {1994},
     pages = {195-202},
     mrnumber = {MR1291961},
     zbl = {0829.20038},
     language = {en},
     url = {http://dml.mathdoc.fr/item/urn:eudml:doc:41197}
}

Levitt, Gilbert. R-trees and the Bieri-Neumann-Strebel invariant.. Publicacions Matemàtiques, Tome 38 (1994) pp. 195-202. http://gdmltest.u-ga.fr/item/urn:eudml:doc:41197/