“…A multiple-valued logic, begun with Post [9] and con tinued with many further developments [10] [11] , is a set which extends binary notation to 0, 1, 2 , ... , (m-2), (m-1), a set of m values. Post algebra consists of a set Q of m logic values and a set V of three basic operations MAX (x1, x2, ... ,xn), MIN (x1, x2, ... ,xn) and literal, denoted by +, • , and x(a , b) respectively.…”