• Communications of the Korean Mathematical Society
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• v.13 no.4
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• pp.847-854
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• 1998

We investigate categorical properties of the category NFrm of nearness frames and uniform homomorphisms. We introduce a concept of weakly strong nearness frames and study its permanence properties.

• The Journal of Natural Sciences
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• v.11 no.1
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• pp.7-10
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• 1999

In this paper, we obtain the relations among the categories such as Seq, Conv and Top by using various functors between them.

• International Journal of Fuzzy Logic and Intelligent Systems
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• v.15 no.2
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• pp.137-144
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• 2015

In this paper, we obtain two types of adjoint functors between the category of intuitionistic fuzzy topological spaces in Mondal and Samanta’s sense, and the category of intuitionistic fuzzy topological spaces in Ŝostak’s sense. Also, we reveal that the category of Chang’s fuzzy topological spaces is a bireflective full subcategory of the category of intuitionistic fuzzy topological spaces in Mondal and Samanta’s sense.