Ueber einen Satz aus der Theorie der stetigen Mannigfaltigkeiten
Ultrafilter with predecessors in Rudin-Frolík order
Ultrafilters and Darboux property of finitely additive measure
Ultraproducts and the axiom of choice
Una nota sobre espacios paracompactos.
Uncountable Powers of ... can be almost Lindelöf.
Undecidability of the existence of regular extremally disconnected S-spaces
Universal metric spaces
Universal spaces in the theory of transfinite dimension, II
We construct a family of spaces with “nice” structure which is universal in the class of all compact metrizable spaces of large transfinite dimension , or, equivalently, of small transfinite dimension ; that is, the family consists of compact metrizable spaces whose transfinite dimension is , and every compact metrizable space with transfinite dimension is embeddable in a space of the family. We show that the least possible cardinality of such a universal family is equal to the least possible...