Tag Archives: L-space

Notation. Write $\mathcal{Q}(A):=\{a\subseteq A\mid a\text{ is finite},a\ne \mathrm{\varnothing }\}$. Definition. An L-space is a regular hereditarily Lindelöf topological space which is not hereditarily separable. Definition. We say that a coloring $c:[{\omega }_1{]}^2\to \omega$ is L-syndetic if the following holds. For every uncountable … Continue reading →