O riešení niektorých nerozhodnutelných topologických problémov
O бикoмпaктax, лeжaщиx в -пpoизвeдeнияx
On 3-topological version of -regularity.
On a certain class of -structures. I
On a certain class of -structures. II
On a characterization of normal and countably paracompact spaces via set-avoiding selections
We give a characterization of normal and countably paracompact spaces via continuous set-avoiding selections.
On a class of almost discrete, abstract
On a class of subalgebras of C(X) with applications to βX
On a class of topological spaces with a Scott sentence
On a condition for the pseudo radiality of a product
A sufficient condition for the pseudo radiality of the product of two compact Hausdorff spaces is given.
On a congruence for the number of finite marked topologies
On a connectedness property of the complements of zeroneighbourhoods in topological vector spaces
On a construction of perfectly normal spaces and its applications to dimension theory
On a Corson space of Todorčević
On a dense -diagonal.
On a generalization of Hausdorff space.
On a generalization of uniformities
On a Michael's conjecture concerning the Lindelöf property in the Cartesian products
On a problem of H. Herrlich
On a problem of Sikorski