Foldness of Positive Implicative Ideals in BCk-Algebras
Mahasin A. Ahmed
Department of Mathematics, College of Science, Sudan University of Science and Technology, Khartoum, Republic of Sudan.
Esmat A. Amhed
IT Department of Electrical Engineering, College of Electrical Engineering, Onaizah Colleges, Kingdom of Saudi Arabia.
*Author to whom correspondence should be addressed.
Abstract
In this article we introduce new notions of (fuzzy) n-fold positive implicative ideals, (fuzzy) n-fold weak positive implicative ideals, and (fuzzy) n-fold weak implicative (weak) ideals in BCK-algebras and investigate some of their properties.
Keywords: BCK/BCI algebras, fuzzy BCI - positive implicative ideals of BCI-algebras, fuzzy positive implicative ideal of BCK-algebra, fuzzy point, n-fold positive implicative ideals, n-fold weak positive implicative ideals