An analytic interpretation of real dimension subgroups.
An effective algorithm to get linking numbers of the 3-manifolds.
An elementary approach to the mapping class group of a surface.
An indecomposable -complex. II.
An infinite-dimensional torsion-free FP...group.
An introduction to the abelian Reidemeister torsion of three-dimensional manifolds
These notes accompany some lectures given at the autumn school “Tresses in Pau” in October 2009. The abelian Reidemeister torsion for -manifolds, and its refinements by Turaev, are introduced. Some applications, including relations between the Reidemeister torsion and other classical invariants, are surveyed.
Approximation L2-invariants by Their Finite-Dimensional Analogues.
Artin groups of finite type are biautomatic.
Aspherical four-manifolds and the centres of two-knot groups.
Aspherical Group Presentations.
Asphericity of symmetric presentations
Using the notion of relative presentation due to Bogley and Pride, we give a new proof of a theorem of Prishchepov on the asphericity of certain symmetric presentations of groups. Then we obtain further results and applications to topology of low-dimensional manifolds.
Augmented group systems and n-knots.
Bounded, separating, incompressible surfaces in knot manifolds.
Bouts d'un groupe opérant sur la droite, I : théorie algébrique
On étudie les morphismes d’un groupe infini discret dans un groupe de Lie contenu dans le groupe des difféomorphismes de la droite réelle. À un tel morphisme , on associe deux ensembles de “bouts” de “dans la direction” . On calcule le nombre de bouts dans plusieurs situations. Dans le cas particulier où est de type fini et où est le groupe des translations, n’a qu’un bout dans la direction si, et seulement si, ils vérifient la propriété de Bieri-Neumann-Strebel.
Branched ...-structures on surfaces with prescribed real holonomy.
Bundles and finite foliations.
Calcul différentiel libre
c-continuous fundamental groups
Cellular Actions and Groups of Finite Quasi-Projective Dimension.
Claspers and finite type invariants of links.