On the sum and difference of two sets in topological vector spaces
On The Sup And Inf Invariance Of Some Separation Axioms
On the sup and inf invariance of some seperation axioms.
On the surjective span and semispan of connected metric spaces
On the surjectivity of shape fibrations
On the Suslin number of subgroups of products of countable groups
On the tangency of multifunctions
On the tangency of sets in generalized metric spaces for certain functions of the class
On the tangency of sets in metric spaces
On the theorems of Y. Mibu and G. Debs on separate continuity.
On the theory of - and -spaces in general topology
On the thickness of topological spaces
On the tightness of chain-net spaces
On the topological characterization of manifolds
On the topological classification of complete linear metric spaces
On the topological extensions
On the topological product of discrete -compact spaces
On the *topology and its application
On the topology generated by preopen sets
On the topology of curves II