:: deftheorem Def14 defines * MOD_2:def 14 :
for a, b being Element of {0,1,2} holds
( ( b = 0 implies a * b = 0 ) & ( a = 0 implies a * b = 0 ) & ( b = 1 implies a * b = a ) & ( a = 1 implies a * b = b ) & ( a = 2 & b = 2 implies a * b = 1 ) );