This work presents delta and theta closure operators in neutrosophic bitopological spaces, indicating their significance in continuity and regularity.
The notion of δ-closure and θ-closure operators in neutrosophic bitopological spaces is presented in this work. Neutrosophic pairwise regular open (closed) and δ-open (closed) sets have been characterized in a few ways. Additionally, the concepts of neutrosophic pairwise δ-continuous and neutrosophic pairwise almost-continuous maps have been presented, and certain of their characterizations are also examined in terms of q-coincidence. We establish the relation between neutrosophic pairwise δ-continuity and neutrosophic pairwise almost-continuity. Lastly, the preservations and characterizations of neutrosophic pairwise regular (resp. semi-regular) and neutrosophic pairwise almost regular spaces are also examined.
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Debnath et al. (2025) studied this question.
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