Document Type : Research Paper

Authors

Department of Mathematics, Sikkim Manipal Institute of Technology, Sikkim Manipal University Majitar, Rangpoo East Sikkim, India.

Abstract

The prime goal of this article is to initiate the notion of fuzzy    $\mu^*$-open(closed) sets and fuzzy $\mu^*$-continuous functions and characterize  them. These concepts are defined in a fuzzy topological space in presence of a  generalized fuzzy topology, which becomes a new tool to study fuzzy topological spaces. It is observed that this class of fuzzy sets fail to form a fuzzy topology but it form a generalized fuzzy topology. Furthermore, the relationship of these fuzzy sets and fuzzy continuity with some existing fuzzy notions are established. Also the notion of fuzzy $(\tau, \mu^*)$-open(closed) functions is introduced and their equivalent conditions with  fuzzy $\mu^*$-continuous functions are established.

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Main Subjects

[1] J. Chakraborty, B. Bhattacharya and A. Paul, Fuzzy $\wedge_r^{g_X} $-sets and generalization of closed sets in generalized fuzzy topological spaces}, Songklanakarin J. Sci. Technol., 39(3) (2017), pp. 275-291.
[2] C.L. Chang, Fuzzy topological spaces}, J. Math. Anal. Appl.,    24(1) (1968), pp. 182–190.
[3] P. Chettri and S. Basnett, Decomposition of continuity in terms of both generalized    topology and topology}, South East Asian J. of Mathematics and Mathematical Sciences, 18(2) (2022), pp. 289-300.
[4] P. Chettri, G. Thapa and A.Chettri, $ps-ro$ $\beta$-Open (Closed) Fuzzy Sets and Related Fuzzy Function and Continuity}, Sahand Commun. Math. Anal., 19(3) (2022), pp. 77-92.
[5] G.P. Chetty, Generalized fuzzy topology}, Ital. J. Pure Appl. Math.,    24 (2008), pp. 91-96.
    
[6] S.R. Malghan and S.S. Benchali, On fuzzy topological spaces}, Glasn. Math., 16 (1981), pp. 313-325.
[7] P.P. Ming and L.Y. Ming, Fuzzy topology. I. Neighborhood structure of a fuzzy point and Moore-Smith convergence}, J. Math. Anal. Appl.,
76(2) (1980), pp. 571--599.
[8] B. Roy and R. Sen, On a type of decomposition of continuity}, Afr. Math., 26 (2015), pp. 153–158.
[9] R.K. Tiwari, J.K. Maitra and R. Vishwakarma, Some generalized continuous maps via ideal}, Afr. Math., 31, (2020), pp. 207-217.
[10] L.A. Zadeh, Fuzzy sets}, Inf. Control., 8 (1965), pp. 338–353.