almost weakly Hausdorff

Definition

• A topological space (X,τ) is called almost weakly Hausdorff if every singleton is δ-closed or δ-open.

Reference

• Dontchev, J.; Popvassilev, S.; Stavrova, D., On the η-expansion topology for the co-semi-regularization and mildly Hausdorff spaces., (English summary), Acta Math. Hungar. 80 (1998), no. 1-2, 9-19.