Moore space

Definition
A topological space is termed a Moore space if it is regular and developable.

Facts

 * Collectionwise normal and Moore implies metrizable
 * Traylor's theorem: Every metacompact separable normal Moore space is metrizable.
 * Reed-Zenor theorem: Every locally compact locally connected normal Moore space is metrizable.
 * Jones' theorem: If $$2^{\aleph_0} < 2^{\aleph_1}$$ then every separable normal Moore space is metrizable (i.e., we can drop the metacompactness assumption from Traylor's theorem).