The accessibility of finitely presented groups.
The conjugacy problem for relatively hyperbolic groups.
The co-rank conjecture for 3-manifold groups.
The equivalence of -groupoids and crossed complexes
The equivalence of -groupoids and cubical -complexes
The Finiteness Obstructions for Nilpotent Spaces lie in D (...).
The fundamental group of compact manifolds without conjugate points.
The Fundamental Group of Fibered Knot Cobordisms.
The genus problem for one-relator products of locally indicable groups.
The Gieseking manifold and its surgery orbifolds.
The Hodge de Rham theory of relative Malcev completion
The Homotype Type of a Combinatorially Aspherical Presentation.
The ...-injectivity of self-maps of nonzero degree on 3-manifolds.
The maximum order of finite groups of outer automorphisms of free groups.
The modular group action on real characters of a one-holed torus.
The Monodromy of a Curve with Ordinary Double Points.
The shape of a group---connections between shape theory and the homology of groups
The Signature of Quasi-Nilpotent Fiber Bundles
The space of Surface group representations.
The topological Hawaiian earring group does not embed in the inverse limit of free groups.