References
- J.M. Anthony and H. Sherwood, Fuzzy groups redefined, J. Math. Anal. Appl. 69 (1979), 124-130. https://doi.org/10.1016/0022-247X(79)90182-3
- I. Chon, Fuzzy ideals generated by fuzzy subsets in semigroups, (To appear Commun. Korean Math. Soc.).
- A.H. Clifford and G.B. Preston, The algebraic theory of semigroups Vol. 1, American mathematical society, Providence, Rhode Island, 1961.
- P. Da, Fuzzy multiplication semigroup, Fuzzy Sets and Systems 105 (1999), 171-176. https://doi.org/10.1016/S0165-0114(97)00228-5
- N. Kuroki, On fuzzy ideals and fuzzy bi-ideals in semigroups, Fuzzy Sets and Systems 5 (1981), 203-215. https://doi.org/10.1016/0165-0114(81)90018-X
- N. Kuroki, Fuzzy semiprime ideals in semigroups, Fuzzy Sets and Systems 8 (1982), 71-79. https://doi.org/10.1016/0165-0114(82)90031-8
- N. Kuroki, On Fuzzy semigroups, Information Sciences 53 (1991), 203-236. https://doi.org/10.1016/0020-0255(91)90037-U
- N. Kuroki, Fuzzy semiprime quasi-ideals in semigroups, Information Sciences 75 (1993), 201-211. https://doi.org/10.1016/0020-0255(93)90054-P
- A. Rosenfeld, Fuzzy Groups, J. Math. Anal. Appl. 35 (1971), 512-517 https://doi.org/10.1016/0022-247X(71)90199-5
- S. Sessa, On fuzzy subgroups and fuzzy ideals under triangular norms, Fuzzy Sets and Systems 13 (1984), 95-100. https://doi.org/10.1016/0165-0114(84)90028-9
- L.A. Zadeh, Fuzzy sets, Inform. and Control 8 (1965), 338-353. https://doi.org/10.1016/S0019-9958(65)90241-X