The concept of s-basis operators over intuitionistic fuzzy sets is introduced and all 2-, 3-, 4- basis operators are listed.
@article{urn:eudml:doc:39186, title = {A theorem for basis operators over intuitionistic fuzzy sets.}, journal = {Mathware and Soft Computing}, volume = {8}, year = {2001}, pages = {21-30}, zbl = {0976.03057}, mrnumber = {MR1843687}, language = {en}, url = {http://dml.mathdoc.fr/item/urn:eudml:doc:39186} }
Atanassov, Krassimir T. A theorem for basis operators over intuitionistic fuzzy sets.. Mathware and Soft Computing, Tome 8 (2001) pp. 21-30. http://gdmltest.u-ga.fr/item/urn:eudml:doc:39186/