Implicative Ideals of BCK-Algebras Based on the Fuzzy Sets and the Theory of Falling Shadows

Table 3

Cayley table.

∗	0	𝑎	𝑏	𝑐	𝑑
0	0	0	0	0	0
𝑎	𝑎	0	0	𝑎	𝑎
𝑏	𝑏	𝑎	0	𝑏	𝑏
𝑐	𝑐	𝑐	𝑐	0	𝑐
𝑑	𝑑	𝑑	𝑑	𝑑	0