2 papers
math.GN2021
The double density spectrum of a topological space
Istvan Juhasz, Jan van Mill, Lajos Soukup +1
It is an interesting, maybe surprising, fact that different dense subspaces of even "nice" topological spaces can have different densities. So, our aim here is to investigate the s…
math.GN2018
Actions of semitopological groups
Jan van Mill, Vesko Valov
We investigate continuous transitive actions of semitopological groups on spaces, as well as separately continuous transitive actions of topological groups.