n-Fold Obstinate BL-algebras and n-Fold Integral BL-algebras

In this paper, we introduced the notion of n-fold obstinate BL- algebras and we stated and proved some theorems, which determine the relationship between this notion and other types of logical algebraic structures. It was an open problem in [7] that we answered it. Moreover, we prove that a BL-algebra L is an n-fold obstinate BL-algebra if and only if L is an MV–algebra and n-fold integral BL-algebra.

کلیدواژه ها:

BL-algebra ، n-fold obstinate BL-algebra and n-fold integral BL-algebra