On the definition of a fuzzy subgroup
Fuzzy Sets and Systems
Fuzzy Sets and Systems
Fuzzy points of equivalent fuzzy subsets
Information Sciences—Informatics and Computer Science: An International Journal - Special issue: Informatics and computer science intelligent systems applications
Computers & Mathematics with Applications
Some kinds of (C,CCq)-interval-valued fuzzy ideals of BCI-algebras
Information Sciences: an International Journal
Soft set theory applied to ideals in d-algebras
Computers & Mathematics with Applications
The parameterization reduction of soft sets and its applications
Computers & Mathematics with Applications
Generalized fuzzy interior ideals in semigroups
Information Sciences: an International Journal
Semigroups characterized by (C,C,νqk)-fuzzy ideals
Computers & Mathematics with Applications
Characterizations of hemirings by (@,@νqk)-fuzzy ideals
Computers & Mathematics with Applications
A new type of fuzzy normal subgroups and fuzzy cosets
Journal of Intelligent & Fuzzy Systems: Applications in Engineering and Technology
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More general form of the notion of quasi-coincidence of a fuzzy point with a fuzzy set is considered, and generalizations of results in the papers [Y. B. Jun, On (@a,@b)-fuzzy subalgebras of BCK/BCI-algebras, Bull. Korean Math. Soc. 42 (4) (2005) 703-711; Y. B. Jun, Fuzzy subalgebras of type (@a,@b) in BCK/BCI-algebras, Kyungpook Math. J. 47 (2007) 403-410] are discussed. The notions of (@?,q"k)-fuzzy subalgebras and (@?,@?@?q"k)-fuzzy subalgebras in a BCK/BCI-algebra X are introduced, and several properties are investigated. Characterizations of (@?,@?@?q"k)-fuzzy subalgebra in a BCK/BCI-algebra X are discussed.