Residual Finiteness of Surface Groups via Tessellations.
R-trees and the Bieri-Neumann-Strebel invariant.
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.
Seifert Fibre Spaces and Poincaré Duality Groups.
Seifert manifolds and (1,1)-knots.
Simply connected minimal symplectic 4-manifolds with signature less than −1
SO3 (...)-representation curves for two-bridge knot groups.
Solvable Groups that are Simply Connected at ... .
Spanning disks for domains with free fundamental groups
Special positions for surfaces bounded by closed braids.
Splitting homomorphisms and bounded 3-manifolds
Strongly geodesically automatic groups are hyperbolic.
Structure and Regidity in Hyperbolic Groups. I.
Structures on Manifolds Defined by Cross-Sections.
Subgroup separability and 3-manifold groups.
Subnormal subgroups of 3-dimensional Poincaré duality groups.
Sur le groupe fondamental de l'espace des noeuds
On déduit par générateurs et relations, pour chaque composante de cet espace, un sous-groupe du groupe fondamental . Les générateurs ont été trouvés à partir de considérations géométriques ; cependant les démonstrations sont de caractère algébrique.
Sur les groupes de tresses
Sur les groupes fondamentaux des H-espaces.
Surfaces in Three-Manifolds and Non-Singular Equations in Groups.
The accessibility of finitely presented groups.