發送短信 : Henrici's transformation and its application to the computation of derivatives of eigensystems

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