International Journal of Mathematics and Mathematical Sciences (Jan 2010)
𝒩-Subalgebras in BCK/BCI-Algebras Based on Point 𝒩-Structures
Abstract
The notion of 𝒩-subalgebras of several types is introduced, and related properties are investigated. Conditions for an 𝒩-structure to be an 𝒩-subalgebra of type (q,∈⋁ q) are provided, and a characterization of an 𝒩-subalgebra of type (∈,∈⋁ q) is considered.