-Subalgebras in BCK/BCI-Algebras Based on Point -Structures

Table 1

∗-operation.

∗	𝜃	𝑎	𝑏	𝑐	𝑑
𝜃	𝜃	𝜃	𝜃	𝜃	𝜃
𝑎	𝑎	𝜃	𝜃	𝜃	𝜃
𝑏	𝑏	𝑎	𝜃	𝑎	𝜃
𝑐	𝑐	𝑎	𝑎	𝜃	𝜃
𝑑	𝑑	𝑏	𝑎	𝑏	𝜃