Zdeněk Frolík and the descriptive theory of sets and spaces
Zero dimensional and connected domains.
Zero-dimensional Automorphisms with Specification.
Zero-dimensional Dugundji spaces admit profinite lattice structures
We prove what the title says. It then follows that zero-dimensional Dugundji space are supercompact. Moreover, their Boolean algebras of clopen subsets turn out to be semigroup algebras.
Zone and double zone diagrams in abstract spaces
A zone diagram of order n is a relatively new concept which was first defined and studied by T. Asano, J. Matoušek and T. Tokuyama. It can be interpreted as a state of equilibrium between n mutually hostile kingdoms. Formally, it is a fixed point of a certain mapping. These authors considered the Euclidean plane with finitely many singleton-sites and proved the existence and uniqueness of zone diagrams there. In the present paper we generalize this concept in various ways. We consider general sites...
Zum Fixpunktverhalten nichtexpansiver Abbildungen
Zur Konstruktion homogener Kegel.