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《Journal of Shaanxi Institute of Technology》 2000-03
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On contrapositive symmetry of Fuzzy R-implications

YUE Zhen_cai (Hanzhong Teachers College, Hanzhong, 723001,China)  
In this paper,the contrapositive symmetry R_implications defined from t_norms and strong negations is studied, and R_implications of contrapositive symmetry are proved when the underling t_norm satisfies a residation condition.
【Fund】: 汉中师范学院科研基金资助项目!(XY— 9818)
【CateGory Index】: O159
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