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  _____     _____     ____     __   __   _    _   
 |__  //   |  ___||  |  _ \\   \ \\/ // | \  / || 
   / //    | ||__    | |_| ||   \ ` //  |  \/  || 
  / //__   | ||__    | .  //     | ||   | .  . || 
 /_____||  |_____||  |_|\_\\     |_||   |_|\/|_|| 
 `-----`   `-----`   `-` --`     `-`'   `-`  `-`

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發送短信 : Lidstone polynomials and boundary value problems