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.
The topology of the relative character varieties of a quadruply-punctured sphere.