A combinatorial characterization of planar 2-complexes
A non-𝒵-compactifiable polyhedron whose product with the Hilbert cube is 𝒵-compactifiable
We construct a locally compact 2-dimensional polyhedron X which does not admit a 𝒵-compactification, but which becomes 𝒵-compactifiable upon crossing with the Hilbert cube. This answers a long-standing question posed by Chapman and Siebenmann in 1976 and repeated in the 1976, 1979 and 1990 versions of Open Problems in Infinite-Dimensional Topology. Our solution corrects an error in the 1990 problem list.
A norm for the cohomology of 2-complexes.
A note on the existence of -equivelar polyhedral maps.
A Semigroup of Simple Homotopy Types.
A spelling theorem for staggered generalized 2-complexes, with applications.
A stably free nonfree module and its relevance for homotopy classification, case .
An elementary approach to the mapping class group of a surface.
An upper estimation for the eigenfrequencies of vibrating Liapunoff bodies (first boundary value problem).
Aspherical 2-Complexes and an Unsettled Problem of J. H. C. Whitehead.
Aspherical Group Presentations.