Abstract
Fuzzification of a fantastic filter in a lattice implication algebra is considered. Relations among a fuzzy filter, a fuzzy fantastic filter, and fuzzy positive implicative filter are stated. Conditions for a fuzzy filter to be a fuzzy fantastic filter are given. Using the notion of level set, a characterization of a fuzzy fantastic filter is considered. Extension property for fuzzy fantastic filters is established. The notion of normal/maximal fuzzy fantastic filters and complete fuzzy fantastic filters is introduced, and some related properties are investigated.
Similar content being viewed by others
References
L. Bolc and P. Borowik,Many-Valued Logic, Springer, Berlin, 1994.
J. A. Goguen,The logic of inexact concepts, Synthese19 (1969), 325–373.
Y. B. Jun,Implicative filters of lattice implication algebras, Bull. Korean Math. Soc.34(2) (1997), 193–198.
Y. B. Jun,Fantastic filters of lattice implication algebras, Internat. J. Math. & Math. Sci.24(4) (2000), 277–281.
Y. B. Jun,On n-fold implicative filters of lattice implication algebras, Internat. J. Math. & Math. Sci.26(11) (2001), 695–699.
Y. B. Jun,Fuzzy positive implicative and fuzzy associative filters of lattice implication algebras, Fuzzy Sets and Systems121 (2001), 353–357.
Y. B. Jun and S. Z. Song,On fuzzy implicative filters of lattice implication algebras, J. Fuzzy Math.10(4) (2002), 893–900.
Y. B. Jun, Y. Xu and K. Y. Qin,Positive implicative and associative filters of lattice implication algebras, Bull. Korean Math. Soc.35(1) (1998), 53–61.
S. Y. Kim, E. H. Roh and Y. B. Jun,On ultra filters of lattice implication algebras, Scientiae Mathematicae2(2) (1999), 201–204.
J. Liu and Y. Xu,On certain filters in lattice implication algebras, Chinese Quarterly J. Math.11(4) (1996), 106–111.
J. Liu and Y. Xu,Filters and structure of lattice implication algebras, Chinese Science Bulletin42(18) (1997), 1517–1520.
V. Novak,First order fuzzy logic, Studia. Logica46(1) (1982), 87–109.
J. Pavelka,On fuzzy logic I, II, III, Zeit. Math. Logik u. Grundl. Math.25 (1979), 45–52, 119–134, 447–464.
Y. Xu,Lattice implication algebras, J. Southwest Jiaotong Univ.1 (1993), 20–27.
Y. Xu and K. Y. Qin,Lattice H implication algebras and lattice implication algebra classes, J. Hebei Mining and Civil Engineering Institute3 (1992), 139–143.
Y. Xu and K. Y. Qin,On filters of lattice implication algebras, J. Fuzzy Math.1(2) (1993), 251–260.
Y. Xu and K. Y. Qin,Fuzzy lattice implication algebras, J. Southwest Jiaotong Univ.30(2) (1995), 121–127.
Author information
Authors and Affiliations
Corresponding author
Additional information
This work was supported by grant R01-2001-000-00004-0 from the Korea. Science and Engineering Foundation.
Y. B. Jun has been an educator and research mathematician since 1982, mostly at the Gyeongsang National University; and a member of the editorial board of Far East Journal of Mathematical Science (India) since 1998, and Quasigroups and Related Systems (Moldova) since 2000. He did postdoctoral work (one year, 1989–90, supported by KOSEF) at the University of Albert in Albert, Canada; and worked for one year (1996–97) as a visiting professor at the Northwest University in Xian, China (supported by LG Yonam Foundation). His research interests focus on the structure theory of BCK/BCI-algebras, Hilbert algebras, (lattice) implication algebras and negatively partially ordered semigroups, and fuzzy and hyper theory of such algebraic structures. Jun is a co-author of the textBCK-algebras with J. Meng which is an approachable introduction to BCK/BCI-algebras.
S. Z. Song has been an educator and research mathematician since 1983, mostly at the Cheju National University; and a visiting professor at Utah State University in USA (1990). Hokkaido University in Japan (1994), Bielefeld University in Germany (1996), Warsaw University in Poland (1998) and Indian Statistical Institute at Delhi (1999). He researches in linear algebra and matrix theory.
Rights and permissions
About this article
Cite this article
Jun, Y.B., Song, S.Z. On fuzzy fantastic filters of lattice implication algebras. JAMC 14, 137–155 (2004). https://doi.org/10.1007/BF02936104
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02936104