*Definition [#g3ef7bd7]
A topological space X is said to be d-compact if every cover of X by open F_σ sets has a finite subcover.
*Reference [#n3933f5a]
J. K. Hohli and D. Singh, ''Between compactness and quasicompactness'', Acta. Math. Hungar. 106 (4) (2005), 317-329.