fuzzy truth
3.In research on history of higher education, because understanding fuzzy and processing not as well as the two related to the historical truth and the historical value relations itself inherent contradictory and sleepy limits the higher history of education research in the certain degree to be thorough and the development.
4.Baldwin’ Truth Value Reasoning of fuzzy inference, the reasoning(FEP and FMT)method by similarity degree of disturbing fuzzy sets is given, reasoning method of similarity degree disturbing fuzzy sets pointed out ,the relational reappearance is also discussed, and then the conditions satisfying the revival property of the algorithms is given.

