發送短信 : Viewing attractive point sets through the kirszbraun-valentine theorem

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