A Čech function in ZFC
A nontrivial surjective Čech closure function is constructed in ZFC.
A class of spaces determined by sequences with their cluster points
A counterexample in semimetric spaces.
A generalisation of normal spaces
A generalization of -sets and -sets by means of operators associated with a topology and associated functions.
A note on diagonal and matrix properties of convergence spaces
A note on extremally disconnected frames
A note on inverse-preservations of regular open sets.
A note on neighborhood product spaces
A note on pretopologies
A note on pseudobounded paratopological groups
Let G be a paratopological group. Then G is said to be pseudobounded (resp. ω-pseudobounded) if for every neighbourhood V of the identity e in G, there exists a natural number n such that G = Vn (resp.we have G = ∪ n∈N Vn). We show that every feebly compact (2-pseudocompact) pseudobounded (ω-pseudobounded) premeager paratopological group is a topological group. Also,we prove that if G is a totally ω-pseudobounded paratopological group such that G is a Lusin space, then is G a topological group....
A note on semihomeomorphism between semi spaces
A note on some applications of semi-open sets.
A note on some applications of -open sets.
A note on the topology generated by preopen sets
A note on weakly -closed functions
In this paper we introduce a new class of functions called weakly -closed functions with the help of generalized topology which was introduced by Á. Császár. Several characterizations and some basic properties of such functions are obtained. The connections between these functions and some other similar types of functions are given. Finally some comparisons between different weakly closed functions are discussed. This weakly -closed functions enable us to facilitate the formulation of certain...
A note on -operator.
A Note Related to a Paper of Noiri
A Priestley view of spatialization of frames
A research on characterizations of semi- spaces.