H-Difference, H-Differentiability and S-Differentiability for Fuzzy Valued Functions
Received:April 01, 2005  Revised:July 12, 2005
Key Words: fuzzy number   fuzzy valued functions   H-difference.  
Fund Project:the Natural Scientific Fund of Gansu Province (3ZS041-A25-004); the National Natural Science Stree Fund of China (40235053)
Author NameAffiliation
GONG Zeng-tai College of Math. \& Inform. Sci., Northwest Normal University, Gansu 730070, China 
KONG Fang-di School of Sciences, Lanzhou University of Science and Technology, Gansu 730050, China 
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      In this paper, we introduce the concept of monotonicity of interval functions and give the characterization of fuzzy valued functions which satisfies the H-difference. Furthermore, relations among H-difference, H-differentiability and S-differentiability are discussed.
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