W. A. Dudek and Y. B. Jun
Quasi p-ideals of quasi BCI-algebras

As a continuation of our previous study of fuzzy subquasigroups and fuzzy ideals of BCI-algebras, the notion of a quasi p-ideal is introduced. Characterizations of quasi p-ideals of the set of all fuzzy points in BCI-algebras are obtained. Next, using special chains of reals we determine the number of non-equivalent fuzzy p-ideals of some types of BCI-algebras (especially BCI-algebras which are quasigroups) and give the method of computation of fuzzy p-ideals.