發送短信 : Fixed points of uniformly lipschitzian mappings

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