On Theory of Controdicition Degree in n-Valued Lukasiewicz Proposition Logic System

Key words: 
• quantitative logic，Lukasiewicz proposition logic，contradiction degree，inference rule /
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Abstract: Some important properties of contradiction degrees are discussed by the concept of contradiction degree in n‐valued Lukasiewicz proposition logic system .Moreover ,the relationship between inference rules and contradic‐tion degrees is discussed ,and the consequence about the union inference rule of contradiction degrees is also ob‐tained in Lukasiewicz proposition logic system .