When a new group of elements are added,the theorem of rank preservation is obtained and proved under judgement matrix of old elements being inconsistent.
王秋萍.原有元素判断矩阵不一致时的保序性定理[J].重庆工商大学学报(自然科学版),1999,(1): Wang Qiuping. Theorem of Rank Preservation under Judgement Matrix of Old Elements Being Inconsistent[J]. Journal of Chongqing Technology and Business University(Natural Science Edition),1999,(1):