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

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發送短信 : On a class of constacyclic codes of length 4ps over ð ½pm + uð ½pm