Browse > Article
http://dx.doi.org/10.5391/IJFIS.2007.7.1.007

A NEW APPROACH TO FUZZY CONGRUENCES  

Hur, Kul (Division of Mathematics and Informational Statistics, Wonkwang University)
Jang, Su-Youn (Division of Mathematics and Informational Statistics, Wonkwang University)
Lee, Keon-Chang (Department of Computer Science, Dongshin Universuty)
Publication Information
International Journal of Fuzzy Logic and Intelligent Systems / v.7, no.1, 2007 , pp. 7-16 More about this Journal
Abstract
First, we investigate fuzzy equivalence relations on a set X in the sense of Youssef and Dib. Second, we discuss fuzzy congruences generated by a given fuzzy relation on a fuzzy groupoid. In particular, we obtain the characterizations of ${\rho}\;o\;{\sigma}{\in}$ FC(S) for any two fuzzy congruences ${\rho}\;and\;{\sigma}$ on a fuzzy groupoid ($S,{\odot}$). Finally, we study the lattice of fuzzy equivalence relations (congruences) on a fuzzy semigroup and give certain lattice theoretic properties.
Keywords
fuzzy function; fuzzy(equivalence) relation; fuzzy binary generation; fuzzy groupoid; fuzzy semigroup; fuzzy congruence; (modular) lattice;
Citations & Related Records
연도 인용수 순위
  • Reference
1 G. Birkhoff, Lattice Theory, 3rd ed. American Mathematical Society College Publications 25 AMS, New York (1971)
2 A. Rosenfeld, An Introduction To Algebraic Structures, Holden-Day, San Fransisco (1968)
3 J. C. Bezdek and J. D. Harris, Fuzzy partitions and relations; an axiomatic basis for clustering, Fuzzy Sets and Systems 1 (1978), 111-127   DOI   ScienceOn
4 M. A. Erceg, Functions, equivalence relations, quotient spaces and subsets in fuzzy set theory, Fuzzy Sets and Systems 3 (1980), 75-92   DOI   ScienceOn
5 L. A. Zadeh, Fuzzy sets, Inform. and Control 8 (1965), 338-353   DOI
6 J. M. Howie, An Introduction To Semigroup Theory, Academic Press (1976)
7 V. Murali, Fuzzy equivalence relations, Fuzzy Sets and Systems, 30 (1989), 155-163   DOI   ScienceOn
8 J. A. Goguen, L-fuzzy sets, J. Math. Anal. Appl. 8 (1967), 146-174
9 K. Hur, H. W. Kang and K. C. Lee, Fuzzy equivalence relations and fuzzy partitions, Honam Math J. 28(3) (2006),291-315
10 K. A. Dib and Nabil L. Youssef, Fuzzy cartesian product, fuzzy relations and fuzzy functions, Fuzzy Sets and Systems 41 (1991), 299-315   DOI   ScienceOn
11 W. C. Nemitz, Fuzzy relations and fuzzy functions, Fuzzy Sets and Systems 19 (1986), 177-191   DOI   ScienceOn