- pairwise continuous functions and bitopological separation axioms
The counterparts of some cardinal functions in bitopological spaces. II.
In this paper, bitopological counterparts of the cardinal functions Lindelof number, weak Lindelof number and spread are introduced and studied. Some basic relations between these functions and the functions in [3] are given.
The counterparts of some cardinal functions in bitopological spaces. I.
This is the first in a series of papers aimed at defining and studying bitopological counterparts of the principal cardinal invariants in topology. It is devoted to study of analogues of the functions weight, density and cellularity.
The Lower and Upper Topologies as a Bitopology
The quasimetrization problem in the (bi)topological spaces.
Two-valued functions, non-archimedean quasi-metrics and ultraquasi-gauges