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  • Author or Editor: Miguel Caldas x
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We define the concept of Λb-sets (resp. V b-sets) of a topological space, i.e., the intersection of b-open (resp. the union of b-closed) sets. We study the fundamental property of Λb-sets (resp. V b-sets) and investigate the topologies defined by these families of sets.

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We introduce and study two new weak separation axioms called ΛΘ-R 0 and ΛΘ-R 1 by using the notions of (Λ,Θ)-open sets and (Λ,Θ)-closure operators.

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