“…De Baets [4] determined all minimal solutions and Wang [24] gave a formula of the number of minimal solutions under the condition that all elements of its righthand side have irredundant finite join-irreducible decompositions. And many other works about solving fuzzy relation equations were published (see [1,5,8,10,12,13,14,15,16,17,19,20,22,23]). Compared with the linear algebraic systems, the main difference with fuzzy relation equations is the operations and the fundamental domain.…”