This paper first illustrated a classification of congruence decomposition on N(2,2,0) algebra, then discussed the algebraic structure of the quotient algebra and a classification of converse( image) under the natural homomorphism.

• 对N(；2；0)数给出了一类同余分解；探讨了其商代数的代数结构以及自然同态下一类逆象的代数结构.