A short proof of Parovičenko's theorem
Some non-normal subspaces of the Čech-Stone compactification of a discrete space
Projectively Solid Sets and an N-dimensional Piccard's Theorem
We discuss functions f : X × Y → Z such that sets of the form f (A × B) have non-empty interiors provided that A and B are non-empty sets of second category and have the Baire property.
The existence of -points of N* for
A characterization of cubes and spheres
On Blumberg type spaces
Continua with a connected set of points of indecomposability
There are absolute ultrafilters on N which are not minimal
Accumulation points of nowhere dense sets
Compact metric spaces have binary bases
On absolute retracts of ω*
An extremally disconnected space is called an absolute retract in the class of all extremally disconnected spaces if it is a retract of any extremally disconnected compact space in which it can be embedded. The Gleason spaces over dyadic spaces have this property. The main result of this paper says that if a space X of π-weight is an absolute retract in the class of all extremally disconnected compact spaces and X is homogeneous with respect to π-weight (i.e. all non-empty open sets have the same...
On intersections of sets of positive Lebesgue measure
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