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 __   __    _____               ______   _____    
 \ \\/ //  |  ___||     ___    /_   _// |  __ \\  
  \   //   | ||__      /   ||   -| ||-  | |  \ || 
  / . \\   | ||__     | [] ||   _| ||_  | |__/ || 
 /_//\_\\  |_____||    \__ ||  /_____// |_____//  
 `-`  --`  `-----`      -|_||  `-----`   -----`   
                         `-`

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發送短信 : On the Green function of the (⊕+m2)k operator