Combinatorial squashings, 3-manifolds, and the third homology of groups.
Commutative diagrams for the inflation-restriction sequence
Constructable Solvable Groups.
Continuous Cohomology and a Conjecture of Serre's.
Controlled connectivity of closed 1-forms.
Crossed n-folds extensions of groups and cohomology.
Crossed product of cyclic groups
All crossed products of two cyclic groups are explicitly described using generators and relations. A necessary and sufficient condition for an extension of a group by a group to be a cyclic group is given.
Cyclic homology of group rings
Cyclic homology of groups and the Bass conjecture.
Decomposition Theorems for Group Pairs.
Depth and transfer maps in the cohomology of groups.
Derivations of categorical groups.
Die Kohomologie S-arithmetischer Gruppen über Funktionenkörpern.
Ein Freiheitskriterium für pro-p-Gruppen mit Anwendung auf die Struktur der Brauer-Gruppe.
Equivariant outer space and automorphisms of free-by-finite groups.
Erratum: J. Eur. Math. Soc. 1, 199-235 (1999)
Erratum to: Homology stability for outer automorphism groups of free groups.
Estimates for homological dimension of configuration spaces of graphs
We show that the homological dimension of a configuration space of a graph Γ is estimated from above by the number b of vertices in Γ whose valence is greater than 2. We show that this estimate is optimal for the n-point configuration space of Γ if n ≥ 2b.
Euler Characteristic and Characters of Discrete Groups.
Euler Characteristics of Discrete Groups and G-Spaces.