• ON FUZZY UPPER AND LOWER CONTRA e^* (δs and δp)-CONTINUOUS MULTIFUNCTIONS

M. Sujatha, M. Angayarkanni, B. Vijayalakshmi, A. Vadivel

Abstract


In this paper, we introduce the concepts of fuzzy upper and fuzzy lower contra  (resp. -semi and -pre)-continuous multifunction on fuzzy topological spaces in ostak sense. Several characterizations and properties of these fuzzy upper (resp. fuzzy lower) contra (resp. -semi and -pre)-continuous multifunctions are presented and their mutual relationships are established in -fuzzy topological spaces. Later, composition and union between these multifunctions have been studied.

Keywords


fuzzy upper contra e^*(resp. δ-semi and δ-pre)-continuous multifunction, fuzzy lower contra e^*(resp. δ-semi and δ-pre)-continuous multifunction.

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