1980/109/1

Homotopy equivalences and mapping torus projections

Algebraic topology for proper shape theory

One-to one Carathéodory representation theorem for multifunctions with uncountable values

Flipping properties and supercompact cardinals

On saturated sets of ideals and Ulam's problem

Homotopy 2-regular mappings whose inverses are open 3-cells

Neighborhoods of compacta in euclidean space