*Definition [#kbe24c7b]
-A topological space (X,τ) said to be a T_{EF} if every finite subset of X is either open or closed.

*Property [#bafccb7a]
-T_{EF} ⇒ [[T_{FF}]].
-T_{EF} ⇒ [[T_{ES}]].

*Reference [#s6463e72]
-McSherry, D. M. G. , ''On separation axioms weaker than T_1.'' , Proc. Roy. Irish Acad. Sect. A 74 (1974), 115–118.