DOUBLE SEMIOPEN SETS ON DOUBLE BITOPOLOGICAL SPACES

Abstract

We introduce the concepts of double bitopological spaces as a generalization of intuitionistic fuzzy topological spaces in ˇSostak's sense and Kandil's fuzzy bitopological spaces. Also we introduce the concept of (T µγ, U µγ)-double (r, s)(u, v)-semiopen sets and double pairwise (r, s)(u, v)-semicontinuous mappings in double bitopological spaces and investigate some of their characteristic properties.

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