Geodesic
Vague $BF$-algebras
Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica, no. 3 (2010), pp. 11-22.

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In this paper, by using the concept of vague sets and $BF$-algebra we introduce the notions of vague $BF$-algebra. After that we state and prove some theorems in vague $BF$-algebras, $\alpha$-cut and vague-cut. The relationship between these notions and crisp subalgebras are studied. 
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A. R. Hadipour; A. Borumand Saeid. Vague $BF$-algebras. Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica, no. 3 (2010), pp. 11-22. http://geodesic.mathdoc.fr/item/BASM_2010_3_a1/

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