Definition
A topological space X is called D_δ-compact if every cover of X by regular F_σ set has a finite subcover.
Reference
J. K. Hohli and D. Singh, Between compactness and quasicompactness, Acta. Math. Hungar. 106 (4) (2005), 317-329.
A topological space X is called D_δ-compact if every cover of X by regular F_σ set has a finite subcover.
J. K. Hohli and D. Singh, Between compactness and quasicompactness, Acta. Math. Hungar. 106 (4) (2005), 317-329.