Table. 1. Table 1

+	0	a	b	c
0	0	a	b	c
a	a	0	c	b
b	b	c	0	a
c	c	b	a	0

Kyungpook Mathematical Journal 2020;60:839~851 https://doi.org/10.5666/KMJ.2020.60.4.839

© KYUNGPOOK Math. J.