On The Sup And Inf Invariance Of Some Separation Axioms
On the sup and inf invariance of some seperation axioms.
Partial discretization of topologies
In questo lavoro daremo una construzione che aumenta il numero di sottospazi chiusi e discreti dello spazio e daremo alcune applicazioni di tale construzione.
Prime extensions and nearness structures
Regularity and extension of mappings in sequential spaces
Representations of presheaves of closure space
Separation axioms as absolute properties under monotone unions in weak topology
The box product of countably many metrizable spaces need not be normal
The commuting of coreflectors in uniform spaces with completion
The functor σ²X
We disprove the existence of a universal object in several classes of spaces including the class of weakly Lindelöf Banach spaces.
The kernel operation on subsets of a -space
The one-point countable compactification of curve spaces and arc spaces
Tilings in topological spaces.
Weakly confluent mappings and a classification of continua
О бикомпактном расширении Пономарева-Зайцева и о так называемом спектральном паразите