發送短信 : Some Properties of the Exchange Operator with respect to Structured Matrices defined by Indefinite Scalar Product Spaces

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