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  ______     ___     __   _     ______    ______  
 /_   _//   / _ \\  | || | ||  /_   _//  /_   _// 
 `-| |,-   / //\ \\ | '--' ||   -| ||-     | ||   
   | ||   |  ___  ||| .--. ||   _| ||_    _| ||   
   |_||   |_||  |_|||_|| |_||  /_____//  /__//    
   `-`'   `-`   `-` `-`  `-`   `-----`   `--`

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Text this: For multi-interval-valued fuzzy sets, centroid defuzzification is equivalent to defuzzifying its interval hull: A theorem