On accumulation points
An example of maximal connected Hausdorff space
Čechův-Stoneův -obal
Bernard Bolzano a teorie dimenze
On local merotopic character
A note on Rudin's example of Dowker space
A note on cardinal invariants of square
On natural merotopies
Left-separated spaces: a comment to a paper of M. G. Tkačenko
A somewhat surprising subspace of
Rationals as a non-trivial complete convergence group
On continuous images of Eberlein compacts
Completely regular modification and products
Covering of a space by nowhere dense sets
A closed separable subspace not being a retract of
A compact Fréchet space whose square is not Fréchet
A note on nowhere dense sets in
Sacks forcing collapses to
We shall prove that Sacks algebra is nowhere -distributive, which implies that Sacks forcing collapses to .
On the existence of true uniform ultrafilters
We shall show that there is an ultrafilter on singular with countable cofinality, which cannot be reached from the set of all subuniform ultrafilters by iterating the closure of sets of size .
Strong decomposability of ultrafilters on cardinals with countable cofinality
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