Compact complement topologies and k-spaces

Kyriakos Keremedis, Cenap Özel, Artur Piękosz +2

Let $(X,\tau )$ be a Hausdorff space, where $X$ is an infinite set. The compact complement topology ${\tau }^{\star }$ on $X$ is defined by: $τ^{\star}=\{\emptyset\} \cup \{X\setminus M, \tex…