On a class of sets between a-open sets and gδ-open sets
DOI:
https://doi.org/10.23755/rm.v39i0.535Keywords:
a-open set, δ-open set, gδ-open, Da-open set, Da-closed setAbstract
In this paper, a new class of sets called Da-open sets are introduced and investigated with the help of gδ-open and δ-closed sets. Relationships between this new class and other related classes of sets are established and as an application Da-continuous functions have been dened to study its properties in terms of Da-open sets.Finally, some properties of Da-closed graph and (D.a)-closed graphs are investigated.
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