New types of almost countable dense homogeneous space.
Non-regularity of some topologies on stronger than the standard one.
On a class of topological spaces with a Scott sentence
On a generalization of Hausdorff space.
On ...-admissible Vector Space Topologies on C(X).
On AP spaces in concern with compact-like sets and submaximality
The definitions of AP and WAP were originated in categorical topology by A. Pultr and A. Tozzi, Equationally closed subframes and representation of quotient spaces, Cahiers Topologie Géom. Différentielle Catég. 34 (1993), no. 3, 167-183. In general, we have the implications: , where is defined as the property that every compact subset is closed and is defined as the property that every convergent sequence has at most one limit. And a space is called submaximal if every dense subset is open....
On approximately semiopen maps in topological spaces.
On binary coproducts of frames
The structure of binary coproducts in the category of frames is analyzed, and the results are then applied widely in the study of compactness, local compactness (continuous frames), separatedness, pushouts and closed frame homomorphisms.
On countable connected Hausdorff spaces in which the intersection of every pair of connected subsets is connected.
On countable locally connected spaces
On fuzzy semi-pre-generalized closed sets.
On generalized -closed sets.
On minimal Hausdorff and minimal Urysohn functions
In this article, we extend the work on minimal Hausdorff functions initiated by Cammaroto, Fedorchuk and Porter in a 1998 paper. Also, minimal Urysohn functions are introduced and developed. The properties of heredity and productivity are examined and developed for both minimal Hausdorff and minimal Urysohn functions.
On and weakly- spaces.
On pairwise semi and pairwise semi bitopological spaces
On pre-Urysohn spaces.
On projectiveness in H-closed spaces
On PSigma and Weakly PSigma Spaces
On -spaces
On regular and sigma-smooth two valued measures and lattice generated topologies.