a Namdar - Ph. D, Department of Mathematics, Faculty of Mathematics,Zarrin Dasht Branch, Islamic Azad university, Zarrin Dasht,
A Borumand Saeid, - Ph. D, Department of Pure Mathematics, Faculty of Mathematics and Computer,Shahid Bahonar University of Kerman, Kerman, Iran,

In this paper, we introduce the concepts of fuzzy obstinate lter on hoop algebras and studysome of properties. We dene and study fuzzy prime lter on hoop algebra. Also, the relationship betweenfuzzy obstinate lter and some other fuzzy lters likeness fuzzy prime and fuzzy positive implicative ltersare investigated. Finally we show that the quotient structure of this relation is a Boolean algebra.

Hoop algebra, fuzzy prime lter, fuzzy Obstinate lter.