發送短信 : On an Opial Type Inequality Due to Fink

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