引入了一个饱和合取范式的概念，利用饱和合取范式的性质，对SAT问题的本质进行了研究。
An new concept of saturated conjunctive normal form is introduced and the nature of sat problem is studied for utilizing the characteristic of saturated conjunctive normal form.
首先说明概念是文本中最基本的属性，概念之间存在着合取运算，概念集基于合取运算的生成变化关系构成一个概念幺半群。
By analyzing the basic attributes of the documents and the relationship of these attributes, a conceptual uni-semigroup can describe the relation of concept sets based on the conjunctive operation.
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