Extensions of BCK-algebras
Akefe Radfar, Akbar Rezaei, Arsham Borumand Saeid · Cogent Mathematics · 2016
In this paper, we introduce the notion of sBCI/sBCK/eBCI/eBCK-algebras as a generalization of the notion of BCI/BCK-algebras. This structure is studied in detail. Also we introduce a way to make an eBCK-algebra from a BCK-algebra and vice versa.