Turkish Journal of Mathematics
The local analogues of the notions of $d_\delta$-connectedness and $D_\delta$-compactness of a topological space are introduced, and are named respectively, locally $d_\delta$-connectedness and locally $D_\delta$-compactness. Several properties including characterization of the concepts are discussed.
$d_\delta$-separation relative to a space, $d_\delta$-connected relative to a space, $D_\delta$-closed relative to a space, locally $d_\delta$-connected space, locally $D_\delta$-compact space
MATHUR, HARSHIT and SINGH, DAVINDER
"Locally $d_\delta$-connected and locally $D_\delta$-compact spaces,"
Turkish Journal of Mathematics: Vol. 44:
1, Article 12.
Available at: https://journals.tubitak.gov.tr/math/vol44/iss1/12