Geodesic
Fuzzy Quasi-Ideals of Ordered Semigroups
Bulletin of the Malaysian Mathematical Society, Tome 34 (2011) no. 1 Cet article a éte moissonné depuis la source Bulletin of the Malaysian Mathematical Society website

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In this paper, we characterize ordered semigroups in terms of fuzzy quasi-ideals. We characterize left simple, right simple and completely regular ordered semigroups in terms of fuzzy quasi-ideals. We define semiprime fuzzy quasi-ideal of ordered semigroups and characterize completely regular ordered semigroup in terms of semiprime fuzzy quasi-ideals. We also study the decomposition of left and right simple ordered semigroups having the property $a\leq a^{2}$ for all $a\in S$, by means of fuzzy quasi-ideals.
Classification : 06F05, 06D72, 08A72. 
@article{BMMS_2011_34_1_a7,
     author = {Muhammad Shabir and Asghar Khan},
     title = {Fuzzy {Quasi-Ideals} of {Ordered} {Semigroups}},
     journal = {Bulletin of the Malaysian Mathematical Society},
     year = {2011},
     volume = {34},
     number = {1},
     url = {http://geodesic.mathdoc.fr/item/BMMS_2011_34_1_a7/}
}
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Muhammad Shabir; Asghar Khan. Fuzzy Quasi-Ideals of Ordered Semigroups. Bulletin of the Malaysian Mathematical Society, Tome 34 (2011) no. 1. http://geodesic.mathdoc.fr/item/BMMS_2011_34_1_a7/